摘要
晋西北丘陵缓坡风沙区是沙漠化正在发展区。本文根据该区右玉县观测资料,分析了产生风蚀的主要原因及影响因素。风蚀主要发生在春季,此期间风大、干旱和地面无植被共同导致了农地的严重风蚀,其年侵蚀强度达12780t/km^2,地面植被对于风蚀具有明显的抑制作用,林地平均年风蚀量仅为农地的1/10,沙尘量约为农地上空的1/35。对如何防治该区的风蚀,作者亦提出了若干建议。
The dune area in the northwest of Shanxi Province, is an area developing into desert. The wind erosion occours mainly in spring when great majority of gales within a year occour, meeting with droughts and naked farmland, which has caused intensive wind erosion on the farmland with erosion modulus of 12780 t/km^2·a. Vegetation is greatly effective in preventing wind erosion, for wind ero sion on forestry only being 1/10 of that on farmland and 1/35 of dust over farm land. Suggestions on how to prevent wind erosion have been put forward in this paper.
出处
《人民黄河》
CAS
北大核心
1990年第4期62-66,共5页
Yellow River
