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Geoscience and Remote Sensing (IITA-GRS), 2010 Second IITA International Conference on

Date 28-31 Aug. 2010

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  • [Front and back cover]

    Publication Year: 2010 , Page(s): c1 - c4
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  • [Front matter]

    Publication Year: 2010 , Page(s): i - v
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  • IITA-GRS 2010 volume 2 content

    Publication Year: 2010 , Page(s): vi - xvii
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  • Notice of Retraction
    Contamination of magnesium alloy with chloride deposits under marine atmospheric conditions

    Publication Year: 2010 , Page(s): 1 - 4
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    In marine atmospheric conditions, the morphologies and potential distributions of magnesium alloy were investigated underneath a droplet of 3% NaCl with microscopy and scanning Kelvin probe technique. Results showed that the deterioration process of Mg alloy could be divided into two stages unde a NaCl droplet. During the initial period, the cathodic reaction was mainly the reduction of H+. Subsequently, with the assumption of H2O and the change of the surface condition, the reduction of O2 played a vital role in the cathodic reaction. During the entire exposure process, the potential distribution images presented “valley” type potential distributions, negative at central area and positive at peripheral area. These non-uniform potential distributions could be attributed to the differential oxygen aeration under droplet. Based on above observations, a model was proposed for describing the contamination mechanism of magnesium alloy induced by NaCl droplet. View full abstract»

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  • Notice of Retraction
    Distribution characteristics of SEM- Mn, Sr, Ba, Cr, V, Co in sediments of Licun River estuary of Jiaozhou Bay

    Publication Year: 2010 , Page(s): 5 - 8
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    In order to research the change and distribution characters of heavy metals in the sediment of estuary, sediment grain size, Acid volatile sulfide (AVS) and simultaneously extracted metals(SEM, including Fe, Mn, Sr, Ba, Cr, V, and Co) were analyzed in three sediment short column cores collected form Licun estuary of Jiaozhou Bay. The sediment near the estuary is relative coarse (silty sand) compare with the sediment in other two cores (sandy silt). Research area is an obvious sulfur-rich environment since the AVS content in sediment samples is high. Content of heavy metals in form of SEM present in an order as Fe>Mn>Sr>Ba>Cr>V>Co. SEM content of sediment is controlled by grain size obviously. SEM-Mn, V, Co have trend of distribution from sediment to bottom sea water in JZB'3 and JZB'4. Generally high correlations among different species of SEM-Fe, Mn, Cr, V, Co indicate those SEM species have similar source or geochemical behavior in early diagenesis processes. View full abstract»

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  • Notice of Retraction
    Geochemistry character of authigenic pyrite mineral in NH-1 core sediments of northern continental slope of South China Sea

    Publication Year: 2010 , Page(s): 9 - 12
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    Three steps chemical extraction method is applied to quantificationally analyze the reactive iron contents and pyrite contents in the sediments of NH-1 core from northern continental slope of South China Sea. Reactive iron content is 132~199μmol/g with an average value of 158.9μmol/g, and pyrite content is 14.3 ~ 147.6μmol/g with an average value of 84.82μmol/g. The pyrite content changes in a relative large range and has an increasing tendency with depth increasing. The pyrite content got from the method of chemical extraction is more approach to the true value of pyrite content in the sediment than the method of selection with microscope. The pyrite content got from the method of selection with microscope can represent the coarse pyrite mineral grain content. The relativity of two sets of data got from two methods is negative and it reflects the sulfur recycle abnormity caused by high flux of methane in the sediment. The relativity between pyrite content and δ34S of pyrite is analyzed and indicate that the pyrite is mainly origin from the sulfate reduction of organic material and from the sulfate reduction of methane in a certain extent. It has the possibility of nature gas hydrate existence in the underlying formation. The restriction factors of pyrite formation in the sediment of NH-1 core are redox condition, organic material content, methane diffused from deep formation, and the sulfate supply in some cases. View full abstract»

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  • Notice of Retraction
    Effects of land use on preferential flow paths distributions in southwestern China

    Publication Year: 2010 , Page(s): 13 - 16
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    Preferential flow plays an important role in the movement of soil water. Dye tracer experiments and computer image analysis were used to analyze morphological and distribution of preferential flow paths under different land uses (forest land, shrubs land, and farmland). The relationships between the preferential flow paths and root lengths, root holes and root surface area were analyzed by Pearson method. The results indicated that the upper 0-10 cm depth of the soil in all land uses had more than 50% dye coverage, and below 20 cm depth, the dye stained area was less than 30%. Preferential flow paths in soil are closely related to soil properties, root length, root holes, and root surface area. The soil properties in the area with preferential flow paths are quite different than that in soil matrix. The soil organic matter content was approximately 5-20% higher in the preferential flow paths area than that in the soil matrix. The percent of preferential flow paths in soil is significantly affected by roots with a diameter of less than 5 mm, root holes and root surface area. The vertical distribution is quite different in different land uses. Shrubs land and farmland have more preferential flow paths in the top soil layers than forestland, and the situation conversed in deeper soil layer. View full abstract»

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  • Compared several neural networks algorithm in GPS height conversion

    Publication Year: 2010 , Page(s): 17 - 20
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    Neural network height fitting method was one of the best methods at present. Neural network parameter, especially the network training function was one of the most important factors to affect the network performance and accuracy. This paper analyzed the relationship between several important neural network algorithms and their characteristics; Anglicizing and comparing speed and accuracy of each algorithm training by an instance data, and finally obtained that LM algorithm was the most appropriate algorithm for GPS height conversion. View full abstract»

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  • Research on scalable and cross-platform geographical information service

    Publication Year: 2010 , Page(s): 21 - 24
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    In the future Internet environment, GIService (Geographic Information Service) will be faced with high-performance serving requirements. Also, considering the different operating systems market share, we need the GIService to run in the cross-platform environment. This paper analyzed the importance of the scalability and cross-platform-ability on GIService. Through the process of middleware selection and the designing of the communication framework, we proposed three models to build the GIService. For each model, we designed the relevant technological solution. Experiments proved these solutions to be feasible. Through the comparison of different test, we can draw the conclusion that reasonable technology selection and model designing makes the scalable, cross-platform GIService available. View full abstract»

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  • Burn scar identification based on recognition of fire spots

    Publication Year: 2010 , Page(s): 25 - 28
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    Burn scar identification is usually made in order to appraise injury degree of the forest after obtaining the fire spots. The most effective remote sensing methods for burn scar identification rely upon analysis of two MODIS near-infrared (NIR) channels centered near 1.24 and 2.13 um data. Due to burned-unburned separability and apparent reflectance of the two channels, the Global Environment Monitoring Index (GEMI) calculated by these two bands data was extensively used to burn scar detection. In this paper, using this parameter we establish burn scar identification algorithm flowchart on the assumption of burn scar identification model based on forest fire spread rules. Through the verification of the algorithm, the results show that the algorithm is consistent with the spread laws of forest fire and meet our needs of assessment of forest affected. View full abstract»

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  • Notice of Retraction
    Estimating carbon storage of major planted forests in three provinces of subtropical China based on forest inventory data

    Publication Year: 2010 , Page(s): 29 - 32
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    Estimates of forest vegetation carbon storage in subtropical China played an important role in researching climate dynamics and its mechanism. Carbon storage reflecting the effect of biomass and volume was developed for major planted forests (Pinus massoniana, Cunninghamia lanceolata) by means of the fifth FID (1994-1998) and assessing carbon density in three provinces (Hubei, Hunan, Anhui). Results showed that carbon storage and carbon density of Pinus massoniana varied at the range of 11.46Tg-27.18Tg and 12.96Mg/ha-14.68Mg/ha, respectively. The carbon storage and carbon density of Cunninghamia lanceolata varied from 4.40Tg to 39.70Tg and 13.28Mg/ha to 16.31Mg/ha, respectively. The distribution of carbon storage and carbon density of different forest types closely related with biomass and volume. This study indicated not only with estimation carbon storage and carbon density of many major planted in subtropical China but also with a method for forest vegetation carbon storage in spatial scales and regional scales. View full abstract»

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  • Notice of Retraction
    Evaluating litter decomposition rate of single/mixed species in a forest ecosystem - A new method and concept

    Publication Year: 2010 , Page(s): 33 - 35
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    This article describes a concise way to estimate litter decomposition rate in a regional scope; Meanwhile, we proposed a new method for evaluating the rate of single/mixed litter decomposition in a forest ecosystem. View full abstract»

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  • Notice of Retraction
    The developing trends of higher education today

    Publication Year: 2010 , Page(s): 36 - 39
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    The paper first outlines changing concept and expectations towards the university in the process of massification of higher education. The emergence of knowledge economy and the increased internationalization in the higher education sector is analysed. Under such circumstances, the university is expected to move away from being an ivory tower, and become more economically and socially relevant and responsive. The paper suggests an integrative role to be taken by the university that takes into account all the changing expectations towards higher education under new economic and social circumstances. View full abstract»

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  • VxWorks-based real-time data gathering software design for seismic data acquisition system

    Publication Year: 2010 , Page(s): 40 - 43
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    A real-time data gathering design is introduced in this paper, which can be used in remote sensing system as seismic data acquisition system. Generally, this kind of system is designed as distributed formation. Data acquired remotely should be transferred to a storage device or analysis center continuously. With the growing of remote sensing scale, it is more difficult to gather data real-time. Data gathering module plays an important role in this kind of system. This design is used to gather remote data by using DMA transferring, its core task consists of DMA transferring control and the scheduling of multi-buffer. data will be transferred to buffer through DMA channel. CPCI crate is applied in the system and software works on it. In order to improve the overall real-time performance of the software, the VxWorks real-time embedded operation system is applied. Interrupt management is also important to this design. Interrupt will be generated at the end of the DMA transmission cycle to inform the software. Experiments show that the data gathering software can satisfy 4 cables system, totaling about 8000 channels, requirements for data gathering capability. This software features simple structure, high performance of real-time processing and data gathering, and it can be applied to other similar remote sensing systems. View full abstract»

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  • Coastline extraction from remote sensing image based on improved minimum filter

    Publication Year: 2010 , Page(s): 44 - 47
    Cited by:  Papers (1)
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    In this paper, coastline has been extracted from remote sensing image using the supervised classification method through the research of remote sensing image features. The coastline extraction can be very accurate when the seawater features are obviously consistent in image. For the calm sea image, the coastline can be extracted accurately based on supervised classification. But for the images that have large variation and obvious reflective waves, it will be under the influence of sea surface texture obviously. In order to solve this problem, it put forward an improved minimum filter method to avoid the impact of sea surface texture. The method added two thresholds, which were the PSNR (peak signal-to-noise ratio) and the correlation coefficient. It limited the filter range in sea area. At last, semiautomatic extracted the accurate coastline in ArcGIS. This method can extract most of the coastline in the high-resolution image. View full abstract»

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  • Research on application of remote sensing into marine exploitation and management

    Publication Year: 2010 , Page(s): 48 - 50
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    Satellite remote sensing has been an important method of marine monitoring. In this paper, according to the requirements of marine monitoring and marine management, the authors produced figures to show the coastline changes, distributions of suspended sediment and chlorophyll-a based on the data from Landsat-5 and synchronous monitoring data of Yellow River's mouth and Laizhou Bay in different periods. Analyses were made on the characteristics of changes of coastline, distributions of suspended sediment and chlorophyll-a. Through this practice, satellite remote sensing was experimentally applied in operational work of marine monitoring. The value of applying remote sensing to marine management and environmental monitoring were discussed and proved as well in this paper. View full abstract»

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  • Suppost vector machine regression applied to MODIS data for PM10 concentaration analysis

    Publication Year: 2010 , Page(s): 51 - 54
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    The density of absorbable particulate matter less than 10um termed as PM10 is one the most important contamination index for air quality monitoring. This article presented a new PM10 concentration analysis approach based on a quick atomospher correction (QUAC) model and support vector machines reggression (SVR). The deriviation of six MODIS bands before and after QUAC model is calculated as indicating features to atomospher matters. Several regression models including liner, logarithmic, quadratic, power and SVR are compared in term of the statistical correlation between the derivation values and groud measured concentration of PM10. The experimental result shows SVR outperforms than the other regression models. View full abstract»

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  • Notice of Retraction
    Analysis of groundwater and soil environment problems in city metro constructions

    Publication Year: 2010 , Page(s): 55 - 58
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    Metro Traffic is an important component of urban public transport part. With large number of urban subway construction, subway tunnels surrounding groundwater, soil damage to the environment has become very prominent in subway construction problems. The changes in water and soil caused by subway construction will inevitably lead to changes in the environment surrounding the MTR changes in living environment. Case Study of Nanjing subway construction, the relationship between subway construction and groundwater-soil environment were discussed by ground subsidence, subway tunnel leakage and deformation, and water pollution in urban subway construction. View full abstract»

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  • Adaptive low power design based on Vxworks kernel scheduler and hook machanism

    Publication Year: 2010 , Page(s): 59 - 62
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (175 KB) |  | HTML iconHTML  

    Embedded system is always power-sensitive for its time-limited power-providing system. As a popular real time operating system used under embedded system, Vxworks provides a feasible way to achieve low power dissipation with its kernel scheduler and hook mechanism. This paper firstly gived the principle and implemention of the Low-power design under Vxworks, and then verified the feasibility of the design with the test result under a platform. The design methodolodgy introduced in this paper can maximize the power efficiency under embedded system and can be used as a reference for low-power design-related occasions under Vxworks. View full abstract»

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  • The third party logistics geospatial information services based on WPS

    Publication Year: 2010 , Page(s): 63 - 66
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    It has comes to be the center stage that how to take advantage of Spatial information to reduce the cost of logistic and improve the efficiency. Based on Web Processing Service Specification, multipartite logistics information and services are integrated, the WPS-based third logistics geospatial information service pattern is built, a solution to different logistics is proposed that can help them to integrate information resources of the distributed heterogeneous multiple source systems. promote a variety of distribution and storage resource sharing, make logistics resources shared and work together, reduce the cost and improve efficiency. Simulation results have proved that this schema is valuable. View full abstract»

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  • Notice of Retraction
    Comparing evaluated precision of straightness error among two spot, least square method and minimum envelope zone method

    Publication Year: 2010 , Page(s): 67 - 70
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    The aim of this paper is to find the evaluate method for straightness error conforms to the smallest condition. First, the algorithm model and the realization method of evaluating straightness error in two spot, least squares method and the minimum envelope zone method have been introduced in detail. The experiment data of eight different kinds of straights have been done on CMM. Then the measured data are evaluated by two spot, least square method and minimum envelope zone method based on search approximatioss(namely cut and try method in revolutionally). It's the experimental result indicated that minimum envelope zone method based on search approximatioss evaluates the result precision to be the highest, and conform to the smallest condition. the sampling distribution impacts the evaluating precision of two spot and least squares method. View full abstract»

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  • Design of PPU framework for processing ordered data blocks in the cluster environment

    Publication Year: 2010 , Page(s): 71 - 74
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    With the development of parallel computing, processing mass data in the cluster environment becomes a hotspot in research. A typical scenario is that the data blocks needed to be parallelization processed is ordered, but there is no common framework adapting to this scenario. Under this background, a common framework named PPU is proposed in this paper to resolve the parallelization of processing ordered data blocks. With the preemption between processes, the PPU framework can ensure the efficiency in parallel data processing. And the mapping table is used to keep the data blocks in the correct order after parallel processed. Experiment results show that the PPU framework for processing ordered data blocks is feasible. View full abstract»

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  • RS and GIS application to underscore changes in land use/cover in Conakry and its two surrounding cities

    Publication Year: 2010 , Page(s): 75 - 78
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1448 KB) |  | HTML iconHTML  

    Research findings into recent changes in the natural environment and land use/cover change in many parts of Africa have been well documented. This research had the aim of investigating such changes in a less studied part of Africa, a small section of western coastal Guinea. Topographic map and ETM+ image processing, interpretation and GIS overlay method were used to make comparisons over time. Quantifiable and significant changes in the nature of and the extent of the land use/cover were found to have occurred. The results of this research also showed a steep growth in the cities and urban areas of this region. Similar research of other parts of Guinea may yield comparable findings. In such a case this may well encourage the Guinea government in cooperation with both the scientific community and local communities to set up urgent and practical policies for the management of land use/cover in this region. View full abstract»

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  • Notice of Retraction
    Influence of winter vegetation variation over Tibetan Plateau on summer precipitation of Southwest China

    Publication Year: 2010 , Page(s): 79 - 81
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (417 KB) |  | HTML iconHTML  

    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

    On the basis of precipitation data for the period 1982-2001 collected from 96 observational stations in Southwest China and normalized difference vegetation index, the influence of winter vegetation variation over Tibetan Plateau on summer precipitation in Southwest China have been analyzed. The result may lead to following conclusions: The winter NDVI over Tibetan Plateau increased in recent 20 years. Correlation and SVD analyze show that there are obviously connections between the summer precipitation fluctuation in Southwest China and those in preceding winter vegetation variation over Tibetan Plateau. Corresponding to the NDVI in preceding winter is positive departure distribution over Tibetan Plateau, especially in mid-western and northern arid, the precipitation appeared an obviously decrease trend in northern Sichuan, eastern Sichuan and Chongqing and increase in other arid of Southwest China, vice versa. View full abstract»

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  • Study on the relationship between summer precipitation over China and spring NDVI in Tibetan Plateau

    Publication Year: 2010 , Page(s): 82 - 84
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    Many works had shown that the importance of vegetation to climate change, and because of its unique height and extent, the Tibetan Plateau (TP) has a great impact on the climate and climate change over East Asia. So the relationship between spring NDVI over TP and summer precipitation is studied by statistical methods in this paper. The influences of NDVI variability in spring over the TP on China summer precipitation is investigated through the correlation analysis and singular value decomposition analysis by using remote sensing normalized difference vegetation index (NDVI) datasets and precipitation data of 723 observational stations in Southwest China for the period of 1982-2001. In a word, Correlation and SVD analyze show that the correlation coefficient between spring NDVI over TP and summer precipitation over China presents a spatial distribution pattern “+-+”from northeast China to southeast China. An obvious annual precipitation difference is also observed in high and low spring NDVI over TP by composite analysis. Corresponding to the NDVI in preceding spring is positive departure distribution over TP, especially in mid-western and northern arid, the precipitation appeared an obviously decrease trend in Yangtze river and increase in northeast and southeast China, vice versa. View full abstract»

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