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对天然林草植被开垦前后土壤侵蚀变化进行的研究表明．无论林地或砍伐基地的地形因素如何，基本上不发生侵蚀或侵蚀极微弱；而相同地形情况下，开垦地或裸露休闲地的年侵蚀模数多在１万ｔ／ｋｍ２以上．且受坡度及雨强因素的影响最为明显。人类开荒作用的结果，北洛河上游、延河中上游地区１９５０～１９８４年间年均新增产沙模数３０００ｔ／ｋｍ２。晋陕蒙接壤区大型煤田的开采，使得土壤侵蚀进一步加剧，如不积极采取防治措施，到２０３０年后，每年将增加入黄沙量１亿ｔ以上。
Abstract：It is shown by the study on variations of soil erosion before and after reclaiming the natural vegetationof forest and grasses that the annual erosion modulus of reclaimed laed or fallow land is more than 10000tons/km2 and is remarkably effected by the factors of slope and rainfall intensity, regardless of topographicfactors of forest land or tree-felling base and under the conditions of same topography of focally no erosion or very slight erosion. Due to the action of human reclamation, the sediment production modulus of annual average increment in 1950-1984 period of the upper Beiluo River and the upper and middle reaches ofthe Yan River is 3000t/km2. The soil erosion is getting worse because of mining a large coalfield in the contiguous areas of shanxi. shaanxi and Inner Mongolia. The sediment entering into the Yellow River will be100 million tons more each year by the year of 2030 if the measccres of prevention and control not beadopted actively.
1唐克丽．张平仓．王斌科．土壤侵蚀与第四纪生态环境演变．第四纪研究，1991．（4）．2唐克丽．张科利．郑粉莉等．子午岭林区自然侵蚀和人为加速侵蚀剖析．土壤侵蚀与生态环境演变研究论文集．中科院西北水保所集刊．1993．（17）．3王斌科．唐克丽．黄土高原区开荒扩种时间变化的研究．水土保持学报．1992．（2）．4刘宝元，唐克丽．焦菊英，马小云．黄河水沙时空图谱·北京：科学出版社，1993．5张胜利．时明立，张利铭等．神府东胜煤田开发对侵蚀产沙的影响．水土保持学报，1992．（2）．6张胜利等．从危野河“89·7”洪水看神府东胜煤田开发对水土流失和人黄泥沙的影响．中国水土保持．1990．（1）．
基本信息:
中图分类号:S157
引用信息:
[1]唐克丽，王斌科，郑粉莉，张胜利，时明立，方学敏.黄土高原人类活动对土壤侵蚀的影响[J].人民黄河,1994(02).
1994-02-20
1994-02-20