摘要
从区域系统整体特征方面,分析了黄河中游地区黄土高原的土壤侵蚀特征。利用实际资料和聚类分析发现本区自北而南分异为侵蚀性质各不相同的三个地带。从全区角度看,侵蚀作用因子中自然因子与人文因子之比约为2.8。在CO_2倍增,全球增温的背景下,本区土壤侵蚀可能减少18%。
The characteristic of soil erosion on middle reaches of the Yellow River is analysed from macro-characteristic of the regional system. By using clusting analysis, we found that 3 zones is in- cluded in this region from south to north with defferent characteristics of soil erosion. With a view of global-area system, the action of erosion by physical factors is greater than by human factors, and the ration of them is almost 2.8%. The soil erosion will be decrease to 18% after the amount of CO_2 dou- bled and the global atmospheric temperature increased.
出处
《水土保持学报》
CSCD
北大核心
1993年第4期26-32,共7页
Journal of Soil and Water Conservation
基金
国家自然科学基金资助项目的子专题
关键词
黄河中游区
土壤侵蚀
分析
region of middle reaches of the Yellow River
regional system
soil erosion
clusting analysis
climate change