干旱区生态环境知识资源中心(Arid): 三峡库区重庆段水蚀荒漠化时空演变特征研究

Arid

	三峡库区重庆段水蚀荒漠化时空演变特征研究
其他题名	Researched on Time-space Evolution Characteristics of Waterpower Desertification in the Three Gorges Reservoir Area of Chongqing
	周启刚; 陈丹
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2014
卷号	21 期号:2 页码:58-66
中文摘要	在人类对物质的需求量大幅度增加的背景下,土地利用的不合理以及植被覆盖率降低等问题,直接导致土地水蚀荒漠化的形成与加剧,土地作为人类的核心生产要素和生态环境的载体,又将直接受到水蚀荒漠化的影响。文章基于RS和GIS技术,综合运用图谱分析、地形梯度分析以及幅度分析方法,分析了20032011年间三峡库区重庆段在三峡蓄水工程期间水蚀荒漠化的动态变化规律,研究水蚀荒漠化的时空演变特征。研究表明:目前为止,库区蓄水对三峡库区重庆段水蚀荒漠化现象产生了一定的影响作用,主要表现为库区周围水蚀荒漠化时空演变特征相对显著;20032011年间三峡库区重庆段不同程度水蚀荒漠化的空间组成结构、数量变化、平面重心分布以及基于地形特征下的图谱变化类型分布都呈现出明显的差异性;8 a期间三峡库区重庆段水蚀荒漠化现象改善趋势不明显,水蚀荒漠化在轻度水蚀荒漠化区域以及高程为500?1 200 m,坡度为15°~25°的区域呈现出最不稳定的时空变化特征;地形因子与水蚀荒漠化现象存在密切关系。研究可为三峡库区重庆段土地开发整理的区域选择和生态环境的保护提供参考和依据。
英文摘要	With the increasingly number of material that human needs, the problems of unreasonable land use and low vegetation coverage are causing the formation and aggravation of waterpower desertification. Land as human central production element and the vector of ecological environment will be affected directly by waterpower desertification. Based on RS and GIS technology, this paper synthetically applied the methods of atlas analysis, topographic gradient and amplitude analysis. Time-space evolution characteristics of waterpower desertification were studied through the analyzing of the dynamic change law of waterpower desertification in the Three Gorges Reservoir Area of Chongqing from 2003 to 2011. The results show that the effect of water storage on waterpower desertification is rising. Time-space evolution characteristics of waterpower desertification is notable relatively around the Three Gorges Reservoir Area. The distribution of spatial structure,quantitative change,and the type f changing map basing on terrain feature at different waterpower desertification degrees have presented obvious differences in the Three Gorges Reservoir Area of Chongqing. During 8 years, the improvement trend of waterpower desertification is not apparent. The time-space evolution characteristics of waterpower desertification have appeared the most unstable trend in the area of the low-grade waterpower desertification, and the time-space evolution characteristics of waterpower desertification in the area that slope in 15°?250 and elevation in 500?1 200 m is also unstable. There is a close relationship between terrain factor and waterpower desertification. This paper aims to provide reference to choose the area of land development and consolidation or protect the ecological environment in Three Gorges Reservoir Area of Chongqing.
中文关键词	水蚀荒漠化 ; 图谱分析 ; 地形梯度 ; RS和GIS ; 三峡库区
英文关键词	waterpower desertification atlas analysis topographic gradient RS and GIS Three Gorges Reservoir Area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY ; ENVIRONMENTAL SCIENCES
WOS研究方向	Geology ; Environmental Sciences & Ecology
CSCD记录号	CSCD:5109116
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231786
作者单位	重庆工商大学旅游与国土资源学院, 重庆 400067, 中国
推荐引用方式 GB/T 7714	周启刚,陈丹. 三峡库区重庆段水蚀荒漠化时空演变特征研究[J],2014,21(2):58-66.
APA	周启刚,&陈丹.(2014).三峡库区重庆段水蚀荒漠化时空演变特征研究.水土保持研究,21(2),58-66.
MLA	周启刚,et al."三峡库区重庆段水蚀荒漠化时空演变特征研究".水土保持研究 21.2(2014):58-66.