黄土高原现代侵蚀环境及其产沙效应  

Contemporary Erosion Environment and Its Effect on Sediment Yield of the Loess Plateau

作　　者：景可[1] 王斌科[2] 

机构地区：[1]中科院地理研究所,北京100101 [2]中科院西北水保所,陕西杨陵712100

出　　处：《人民黄河》1992年第4期35-38,共4页Yellow River

摘　　要：自然因素和人为因素是构成黄土高原侵蚀环境的两大主导因素。时间上的继承性、空间上的明显区位分异、大陆性季风气候以及独特的侵蚀产沙因素的区域组合等构成了该地区侵蚀环境的基本特征,尤以植被和降雨这两个主要侵蚀因子的地带性分异明显,属于地带性因素;其它自然因素和人为因素则属非地带性因素。受这一环境的影响,该地区的侵蚀产沙的时空分布也表现出明显的分异规律,其中的多沙粗沙区就是诸因素独特组合的结果。Physical factors and human factor are two dominant factors forming erosion environment of the Loess Plateau. Temporal inheritance, obvious regional difference, continental monsoon climate and unique regional combination of erosion factors are the basic charateristics of the erosion environment in this area. The two main erosion factors, regetation and precipitation, with obvious zonal differnence, belong to zonal factors, while other physical factors and human factor belong to non-zone factors. Influenced by this, the temporal and spatial distributions of eroded sediment in the area also have obvious differential law. The area with high sediment and coarse sediment yield in the Loess Plateau results mainly from the disadvantageous combination of these factors.

关 键 词：黄土 高原 侵蚀 土壤 环境 泥沙 

分 类 号：S157[农业科学—土壤学]