摘要
将研究区分成100 m×100 m的网格,以通用土壤侵蚀方程USLE为模型,利用RS与GIS技术获取土壤侵蚀的各影响因子,计算出每个单元格的年均侵蚀量和侵蚀模数,最终获得龙口市的土壤侵蚀总量和侵蚀强度分级。结果表明,龙口市年均侵蚀模数为982.5 t/(hm2.a),侵蚀强度属轻度;占龙口市总面积63.6%的区域为微度侵蚀,微度侵蚀对总侵蚀量的贡献率为8.1%;而强度以上侵蚀虽然只占土地总面积的4.7%,侵蚀量却占到总侵蚀量的40.6%。
The area was divided into 100 m × 100 m grid. The amount of soil erosion in every grid is estimated running the model of USLE by the support of RS and GIS. Then the total amount and degree of soil erosion of this area was acquired. The result showed annual average soil erosion amount was 982.5 t/hm^2 and it was light degree erosion. 63.6% of Longkou city was tiny eroded area, but it only contributed 8.1% of sediment of the area, while the serious eroded area only occupied 4.7% of the area, but contributed 40.6 % of the sediment.
出处
《水土保持研究》
CSCD
北大核心
2007年第2期101-103,共3页
Research of Soil and Water Conservation
基金
国家自然科学基金资助项目(40271001)
