摘要
北洛河流域人类活动对河流泥沙影响较为突出的项目有毁林开荒、陡坡开荒、修路、开矿等。根据典型调查情况及有关资料 ,对北洛河流域的水沙基本特性及人类活动对水土流失治理的影响进行了详细的计算和分析。结果表明 :北洛河流域人类活动新增水土流失量随年代有较大的增加 ,1990～ 1996年人类活动年均增沙 1768万t,分别是 70、80年代的 2 .3和 1.7倍 ;增沙量所占比例最大的项目是毁林开荒 ,其次为陡坡开荒。
The main human activities significantly influencing the river sediment in the Beiluo River basin are opening up wasteland on steep slopes and forest areas, road construction, mining, and so on. Based on typical investigation and relative data, the basic characteristics of flow and sediment in Beiluo River and influence of human activities on harness of soil and water loss have been calculated and analyzed in detail in the paper. The results demonstrate that there is much increase in advanced soil and water loss by human activities along time in the river basin. Annual sediment increase from 1990 to 1996 by human activities is 17.68 million tons that is 2.3 and 1.7 times of 1970s and 1980s respectively, and which is mainly come from destroying forest for opening up wasteland, and then the opening up wasteland on steep slopes.
出处
《人民黄河》
CAS
北大核心
2001年第2期15-17,共3页
Yellow River
基金
水利部第二期黄河水沙变化研究基金项目
关键词
人类活动
水土流失
北洛河流域
河流泥沙
human activities
increase of sediment
soil and water loss
the Beiluo River basin
