Abstract:A new ecological environment condition evaluation model of county region based on remote sensing techniques only was proposed. In this model, the classification method based on support vector machines with an HJ-1 CCD image of Qinnan district, Guangxi province was used for extraction of land use data. Indices of biodiversity, vegetation coverage, water density, soil erosion and human activities were extracted and the weighted sums of them were composed of regional ecological index which was used to evaluate the regional eco-environmental quality. Overall ecological environment was relatively good. Area in good land accounted for 64.105% of Qinnan district ,which mainly distributed in forest area; 31.206% of the whole district belonged to moderate grade which distributed in areas with rich water resources; poor land accounted for 3.668% which distributed in building areas.
刘瑞, 王世新, 周艺, 姚尧, 韩向娣. 基于遥感技术的县级区域环境质量评价模型研究[J]. 中国环境科学, 2012, 32(1): 181-186.
LIU Rui, WANG Shi-Xin, ZHOU Yi, YAO Yao, HAN Xiang-Di. Ecological environment condition evaluation mode of county region based on remote sensing techniques. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(1): 181-186.