摘要
由于风蚀、水蚀交替进行,重力侵蚀活跃,晋陕蒙接壤区成为黄河中游水土流失最为严重的地区。按照侵蚀环境与侵蚀特点的不同,该接壤区可分为黄土丘陵区、砾质丘陵区、沙质丘陵区和风沙区四个区域。其中以黄土丘陵区的侵蚀模数最大,达15000～30000t/(km^2·a);风沙区最小,为200～5000t/(km^2·a)。随着大规模煤田开发及配套工程建设,水土流失将进一步加剧,仅神府、东胜、准格尔和河东四大煤田的一、二期工程就将弃土弃渣12.25亿m^3。对工矿区和一般地区的治理应采取不同措施,但重点在工矿区。
Due to alternate wind erosion and water erosion, the active gravity erosion, the contiguous areas of Shanxi, Shaanxi and Inner Mongolia have become the most serious soil and water loss areas on the middle reaches of the Yellow River. According to the different erosion environments and erosion characteristics, the contiguous areas can be divided into four areas of rolling loess area. rolling gravelly area, rolling arenose area and dune sand area. Among which, the erosion modulus of the rolling loess area is the maximum as high as 15000～30000t/(km^2·a), and the dune sand area is the minimum of 200～5000t/(km^2·a). The soil and water loss would be even worse along with a large scale development of coalfields and their completod projects construction. For an example, the spoils of Shenfu, Dongsheng, Zhunger and Hedong four major coalfields exploitation in the first and second stages will be 1.225×10~9m^3. Thus, the different measures should be adopted seperately for mining area and general area and the stress should be put on the mining area.
出处
《人民黄河》
CAS
北大核心
1992年第6期31-35,57,共6页
Yellow River
关键词
水土流失
煤田
开发
防治
loss of water and soil, coalfield exploitation, soil conservation, Shanxi-Shaanxi-Inner Mongolia contiguous areas.
