干旱区生态环境知识资源中心(Arid): 石羊河下游沙漠化的自然因素和人为因素及其位移

Arid

	石羊河下游沙漠化的自然因素和人为因素及其位移
其他题名	Natural and Artificial Factors and Their Transfer on Sandy Desertification of Lower Reaches of Shiyang River Basin
	常兆丰1 ; 韩福贵 2; 仲生年 3; 赵明 2; 梁泰 2
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2005
卷号	28 期号:2 页码:150-155
中文摘要	石羊河流域下游自汉代以来逐渐沙漠化,生态环境退化.其自然因素主要有:地形特征构筑了封闭的内陆河流域;水蚀是内陆河流域沙漠化的开始,上游集流区为中、下游提供了丰富的沙源;水资源的减少使得中、下游大面积湖积沙沙漠化.人为因素主要有:农业开发是引起水资源减少的关键,巩固边塞是引起河西走廊农业开发和耕地面积扩大的主要原因;战争对石羊河流域生态退化的影响不可忽视.石羊河下游民勤县在自汉代以来沙漠化和生态环境退化的漫长历史过程中,人为因素不断增强.20世纪中期以来,尤其是1958年红崖山水库建成以来,沙漠化过程中的人为因素占据了主导地位.
英文摘要	The lower reaches of Shiyang River Basin has been threatened desertification and ecological degeneration from Han Dynasty, The natural factors of causing desertification are as follows: the closed drainage system is constructed by the landform; the water erosion is the origin for sandy desertification; the upper area has provided richen sand source for the middle and lower reaches; the decrease of water resources from upper reaches has caused the desertification in lower reaches areas. The artificial factors are as follows: the agricultural exploitation is the key role for decreasing water resources, and it is a key causation that agricultural area was expanded for consolidating frontier defense in Hexi Corridor; the influence of historical war on ecological degeneration of Shiyang River Basin should not be ignored. In lengthy course of desertification and ecological degeneration from Han Dynasty, the artificial factors are ceaselessly strengthened in Minqin county in Shiyang River Basin lower. Since In middle period of 20 centuries, especially the Hongyashan Reservoir has been build in 1958, the artificial factors in sandy desertification have inhabited the dominant status.
中文关键词	石羊河流域 ; 沙漠化 ; 自然因素 ; 人为因素 ; 位移
英文关键词	Shiyang River Basin sandy desertification natural factor artificial factors transfer
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:1964724
来源机构	甘肃农业大学 ; 甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206134
作者单位	1.甘肃农业大学, 兰州, 甘肃 730070, 中国; 2.甘肃省治沙研究所, 武威, 甘肃 733000, 中国; 3.单位不详
推荐引用方式 GB/T 7714	常兆丰,韩福贵,仲生年,等. 石羊河下游沙漠化的自然因素和人为因素及其位移[J]. 甘肃农业大学, 甘肃省治沙研究所,2005,28(2):150-155.
APA	常兆丰,韩福贵,仲生年,赵明,&梁泰.(2005).石羊河下游沙漠化的自然因素和人为因素及其位移.干旱区地理,28(2),150-155.
MLA	常兆丰,et al."石羊河下游沙漠化的自然因素和人为因素及其位移".干旱区地理 28.2(2005):150-155.