基于RUSLE模型的南京市2006—2014年水土侵蚀时空分布特征

发布时间：2018-05-05 22:56

本文选题：南京市 + 水土流失　；参考：《江苏农业科学》2017年17期

【摘要】：以江苏省南京市为研究对象,基于地形、土壤、降水、植被覆盖、土地利用等数据,结合RUSLE模型,分析南京市2006—2014年水土侵蚀时空分布特征。结果表明,南京市水土流失量逐渐减小,2006、2010、2014年分别为1 410万、1 130万、1 110万t,城市及山丘边缘植被覆盖差的地区侵蚀强度较大;水土保持工作取得一定成效,但人类活动仍能增加部分地区土壤侵蚀强度,2006—2010年侵蚀强度降低面积为632.16 km~2,增大面积为348.95 km~2;2010—2014年,侵蚀强度降低面积为493.40 km~2,增大面积为253.39 km~2;南京市建设用地、水域、林地、水田受侵蚀强度小,旱地、园地、乔木绿地、草地、裸地受侵蚀强度大,是水土保持工作的重点,南京市生态环境逐渐变好,2006—2010年旱地、园地、乔木绿地、草地受侵蚀强度有所下降。
[Abstract]:Based on the data of topography, soil, precipitation, vegetation cover and land use in Nanjing, Jiangsu Province, the spatial and temporal distribution characteristics of soil and water erosion in Nanjing city from 2006 to 2014 were analyzed with RUSLE model. The results showed that the amount of soil erosion in Nanjing decreased gradually, and the 200620102014 years were 14 million 100 thousand, 11 million 300 thousand, 11 million 100 thousand T respectively, and the city and Mountain hilly side respectively. The erosion intensity in the area with poor vegetation coverage is larger, the soil and water conservation work has achieved certain results, but human activities can still increase the soil erosion intensity in some areas. The area of erosion intensity decreased to 632.16 km~2 in 2006 to 2010, and the area is 348.95 km~2; 2010 to 2014, the area of erosion intensity is 493.40 km~2, and the area is 253.39 km. ~2, Nanjing construction land, water, woodland, paddy soil erosion intensity is small, dry land, garden, tree green space, grassland, bare land erosion intensity is great, the focus of soil and water conservation work, the ecological environment in Nanjing gradually become better, 2006 - 2010 dry land, garden, Qiao Mulv land, grassland erosion intensity decreased.

【作者单位】：南京信息工程大学大气环境与装备技术协同创新中心/地理与遥感学院;环境保护部南京环境科学研究所;环境保护部华东环境保护督查中心;
【基金】：国家公益性行业(环保)科研专项(编号:201209029-1)
【分类号】：S157.1

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