中国水土保持科学2012，Vol.10Issue(3)：9-14,6.
近20年来黄土高原水蚀风蚀交错区典型小流域土地利用/覆被变化分析
Land use/cover changes in Liudaogou catchment in water-wind erosion crisscross region in Loess Plateau during the past 20 years
摘要
Abstract
To study the evolution characteristics of erosion environment in water-wind erosion crisscross region in Loess Plateau during the past 20 years, we investigated and analyzed the land use/cover change in Liudaogou catchment on farmland, woodland, grassland and industrial land with the land use information in 1990, 1995 , 2002 and the RS image in 2010. The results showed: 1) From 1990 to 2010, due to the dramatically transference from slope farmland and dry terrace to woodland and grassland, especially after the implementation of the "Grain for green" policy in 1999, the percentage of the woodland and grassland increased from 35. 74% to 62. 79% and the percentage of farmland decreased from 33.87% (233.54 hm ) to 7.61% (52.49 hm2). The main fanning area distributed mainly in the land below the gully edge, whose proportion went up from 13. 82% to 74. 04% out of the total area of farmland. Industrial area was extended from 0. 28 hm2 to 14. 89 hm2 and the coal mining becomes more active. 2) In the respect of underlying surface influencing erosion process, the vegetation coverage, especially above the gully edge, improved obviously. However, the increasingly more active coal mining, on the one hand, disrupted the growth of vegetation and land use type in this region, on the other hand, accelerated the erosion environment degeneration.关键词
土地利用/数量变化/分布态势/六道沟流域/水蚀风蚀交错区Key words
land use/ change of number/ distribution/ Liudaogou catchment/ water-wind erosion crisscross region引用本文复制引用
马瞳宇,张晓萍,马芹,雷泳南..近20年来黄土高原水蚀风蚀交错区典型小流域土地利用/覆被变化分析[J].中国水土保持科学,2012,10(3):9-14,6.基金项目
黄土高原土壤侵蚀与旱地农业国家重点实验室专项经费项目“水蚀风蚀交错区侵蚀环境演变的地学-生物学过程及其调控”(10502-Z12-1) （10502-Z12-1）
