干旱区生态环境知识资源中心(Arid): 黑河流域土地沙漠化变迁及成因

Arid

	黑河流域土地沙漠化变迁及成因
其他题名	Evolution and Variation of Land Desertification in Hiehe River Basin and Its Effection Factors
	刘蔚 1; 王涛2 ; 曹生奎 2; 司建华2 ; 席海洋 2
ISSN	1003-7578
出版年	2009
卷号	23 期号:1 页码:35-43
中文摘要	本论文在野外试验和室内分析的基础上提出以下结论.在自然因素包括气候、地质地貌、风沙活动及自然灾害等影响下,历史时期黑河流域绿洲和沙漠化土地交替发展.气候温暖期也正是沙漠化土地减弱时期,寒冷期则是沙漠化发生强烈阶段.研究表明90年代与80年代中期相比,额济纳旗沙漠化土地面积增加29.1%,中游地区沙漠化发展速率相对较慢,中游地区1990年比1949年增加约9.4%,年增长速率0.27%.1990年以来,沙漠化呈稳定态势.2000年黑河流域中下游地区的沙漠化土地共有13508.4km~2,占监测区域的11.8%.其中,临泽沙漠化土地的面积占监测区域沙漠化土地面积的1.7%,高台占1.707%,肃南(部分)占1.427%,酒泉占0.851%,嘉峪关占0.276%,金塔占9.391%,额济纳旗沙漠化土地的面积为11434.64km~2,占84.648%.由此看出,黑河流域下游地区的土地沙漠化形势严峻.同时分析了造成黑河流域土地沙漠化发生、发展的原因.
英文摘要	The status of land desertifieation in the Heihe River basin was studied using existing remote sensing data and field investigation data. The hydrological characteristics of desertified land in the basin were analysed, which provide a theoretical basis for the rational and sustainable use of water and land resources, and the land desertification eantrol, rehabilitation and reversing in the arid inland river basin of northwest China. Based on the field experiments and indoor analyses this research puts forward the following conclusions.Under the influences of various natural factors including climate, geology, geomorphology, Aeolian sand activity and natural disasters, the Heihe River basin experienced the alternative oasisi expansion and land desertigcation processes in the historival period. In the warm period land desertification weakened, while in te cold period land desertification strongly exaeerbated.Reseaehes showed that from the mid - 1980s to the 1990s land desertifieation area in Ejina increased by 29.1%. Desertifieated land in the midstream basin increased by 9.4% or annual by 0.27%.From 1990 onwards,land desertification tended to heeome stable.By the 2000 land desertificafioa area in the mid - downstream basin of the Heihe River accounted for 11.8% of the monitoring area. Among them, land desertification area in Linze accounted for 1.7%, in Gaotai for 1.707%, in Sanan for 1.427%, in Jiuquan for 0.851%, in Jiayuguan for O.276%, in Jinta for 9.391%, in Ejina for 84.648%. It could be seen that the downstream basin of the Heihe River was experiencing the most serious land desertificafion.Analytical results showed that the causes being responsible for the occurrence and developemt of land desertifieation in the Heihe River basin include the natual foactors, such as fragile eco-environmnet, high evaporation, arid and windy climate, sparse precipitation and loose surface materials; and irrational human economic activites, such as irrational use of limited water resources etc., overuse of water resource in the upstream basin leaded to water shortage in the downstram basin, vegetation degradation, overgrazing and thus caused land desertification.
中文关键词	黑河流域 ; 历史时期土地沙漠化 ; 现代土地沙漠化 ; 成因分析
英文关键词	Heihe River basin historical land desertification present land desertification effection factors
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:3560200
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223649
作者单位	1.清华大学土木水利学院水利水电工程系, 北京 100084, 中国; 2.中国科学院寒区旱区环境工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘蔚,王涛,曹生奎,等. 黑河流域土地沙漠化变迁及成因[J]. 中国科学院西北生态环境资源研究院,2009,23(1):35-43.
APA	刘蔚,王涛,曹生奎,司建华,&席海洋.(2009).黑河流域土地沙漠化变迁及成因.,23(1),35-43.
MLA	刘蔚,et al."黑河流域土地沙漠化变迁及成因".23.1(2009):35-43.