黄土高原开荒扩种的区域分异及侵蚀效应

Regional Differences and Erosion Effects of Wastedland Reclamation and Expanding Cultivation On the Loess Plateau

通过对河口镇—龙门区间黄土高原的开荒扩种进行综合分区,并估算其侵蚀产沙增加量,从人文生态与自然生态的角度,分析研究了开荒扩种的区域分异特征及其与侵蚀分布的对应关系,为确切评价人类活动的生态效应提供了新的依据。

Wasteland reclamation and expanding cultivation is comprehensively reginonalized in Hekou Town-Longmen area on the Loess Plateau,and an increase in sediment production by erosion is estimated. Starting from the human ecology and natural ecology,this paper analyses and studies the features of regional differences of wasteland reclamation and expanding cultivation as well as the corresponding relationship of erosion distributions thereby to provide the fresh bases for accurate evaluation of ecological benefits of human activities.