摘要
该研究以黄土区坡地的坡长与坡度对于土壤侵蚀的影响为研究内容 ,旨在为因害设防 ,更好的治理水土流失 ,对黄土高原坡地综合治理提出理论依据和切实可行的实践指导 .根据在山西省吉县黄土残塬沟壑区长期定位水土流失观测与调查资料 ,并结合以往关于黄土区的研究成果分析了坡长和坡度与侵蚀的关系 ,研究表明 :随坡长和坡度的增大 ,径流增大 ,侵蚀量越大 ,侵蚀模数增大 ;年侵蚀模数与坡长呈正相关关系 ;随着坡长增大 ,细沟侵蚀和浅沟侵蚀明显增强 ;坡耕地坡长最好小于 15m .
The paper studies on the slope length and grade in loess broken plateau region in order to arrange suitable measures for controlling soil loss. It analyzes the relationship of the slope length and grade which influences on loess soil erosion, according to the field monitoring and data investigating and some other researchers' findings. The result shows that the erosion amount is positively correlated with the slope length and grade, and the erosion module is positively correlated with the slope length. The rill erosion and gully erosion are seriously evident with the slope length becoming longer. Therefore, the beffer slope length of cropland is less than 15?m.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2002年第1期59-62,共4页
Journal of Beijing Forestry University
基金
"九五"国家攻关专题 (96 0 0 7 0 1 0 1 0 1)
国家自然基金面上项目 (3 9970 60 9)资助
关键词
综合治理
土壤侵蚀
黄土残塬沟壑区
坡度
坡长
southwestern region of Shanxi province, Loess Plateau, topography, erosion, protection forest, soil and water conservation
