摘要
利用RS和GIS技术获取研究区土壤侵蚀的各个影响因子,运用卜兆宏提出的土壤侵蚀模型,得出研究区土壤侵蚀模数和侵蚀强度分级,并分析研究区土壤侵蚀与主要影响因子间的响应关系.结果表明:洛宁县平均土壤侵蚀模数为2 799.29 t/(km2.a),年侵蚀总量为6 495 744 t;61%的区域为微度侵蚀或轻度侵蚀,强度以上侵蚀主要分布在洛宁县西部,面积占全县的20%,侵蚀量却占总侵蚀量的57.64%,是预防和加强水土流失治理的重点区域;坡度与土壤侵蚀呈现正相关关系,中度和强度侵蚀在水体、农地、建设用地、森林、未利用土地等土地利用类型中呈递增现象.
The primary affecting factors for the sensitivity of soil erosion based on RS and GIS are calculated, and the soil erosion model introduced by Bu zhaohong is adopted in this paper. The total amount and degree of soil erosion in luoning County with the analysis of main affecting factors are studied. The results showed that annual average soil erosion modulus was 2 799.29 t/km^2 and the erosion amount was 6 495 744 t, 61% in Luoning County with tiny or light degree erosion. The serious eroded area which was mainly concentrated in the western only occupied 20% of the area, but contributed 57.64% of sediment and needed more protection. There is a basically positive correlation between soil erosion and slope; midding and more serious erosion were increased in different land use such as waters, farmland, construction land, forest and unused land.
出处
《河南大学学报（自然科学版）》
CAS
北大核心
2010年第2期156-161,共6页
Journal of Henan University:Natural Science
基金
国家科技支撑计划资助项目(2006BAB06B01-07)
关键词
土壤侵蚀
遥感
地理信息系统
洛宁县
soil erosion
remote sensing
geographic information systems
Luoning county
