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Remote Sensing (RS) was integrated with Geographical Information System (GIS) technique in this study to explore the spatiotemporal change of urban built-up land and linkage between percentage of urban built-up and chemical Permanganate index (CODMn), Ammonia (NH4+-N), total phosphorus (TP) concentrations in the Jiulong River Basin, Southeast China over the period 1986-2007. Percentage of urban built-up land tend to increase over 1986-2007 for 18 sub-watersheds. The percentage for most sub-watersheds nearly doubled in 2007. The percentage of urban built-up land is positively correlated with CODMn, NH4+-N and TP, with coefficients R2 0.699, 0.818 and 0.787, respectively. The percentages of urban built-up land are positively correlated with CODMn, NH4 +-N and TP in both two seasons. Urban built-up land is better correlated with water quality in wet season than in dry season.
Date of Conference: 24-26 June 2011