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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％。
In terms of the overall characteristics of the regional system, the soil erosion characteristics of the Loess Plateau in the middle reaches of the Yellow River are analyzed. Based on the actual data and cluster analysis, it is found that the area is divided into three zones with different erosions from north to south. From the perspective of the whole region, the ratio of natural factors to human factors in erosion factors is about 2.8. Under the background of double CO_2 and global warming, the soil erosion in this area may be reduced by 18%.