干旱区生态环境知识资源中心(Arid): 人工绿洲生态系统中土壤和植被对土地利用变化的响应以北屯绿洲为例

Arid

	人工绿洲生态系统中土壤和植被对土地利用变化的响应以北屯绿洲为例
其他题名	Soil and vegetation response to land use/cover change in artificial oasis ecosystem: A case study of Beitun Oasis
	董爽 1; 王让会 1; 宁虎森 2; 林毅 1; 黄俊芳 1
ISSN	1000-6060
出版年	2009
卷号	32 期号:4 页码:578-584
中文摘要	在遥感(RS)和地理信息系统(GIS)技术的支持下,对干旱区典型人工绿洲-北屯绿洲1989和2005年两期遥感影像进行了处理,分析了绿洲16年来的土地利用/覆盖变化.通过野外调查、实验室分析及"时-空替代法"等方法,对人工绿洲生态系统中的土壤和植被对LUCC的响应机制进行了分析.结果表明:(1)北屯绿洲耕地和盐碱沼泽地面积不断增加,垦荒和撂荒成为土地利用变化的两个主要过程.(2)绿洲土地利用变化对土壤养分和pH值的影响显著.(3)耕地的土壤盐分含量低于弃耕地和荒地.(4)随着土地利用类型的变化,群落组成发生较大变化,优势种更替明显.
英文摘要	Oasis is the core of ecosystem structure in arid area, especially the artificial oasis developed by irrigation has become an important area for people to survival in arid area. Research has shown that ecosystem degradation, land desertification, vegetation decline, and species diversity loss of oasis are all connected with unreasonable re-sources development and utilization, and human factors are the direct cause of ecosystem degradation in arid area. Therefore, deep analysis of land use/cover change of oasis caused by human activities, especially ecological effects caused by the change of soil and vegetation, has great significance for rational use of land resource and land quality maintenance of artificial oasis in arid area. This paper took typical artificial oasis, Beitun oasis, as the study area, based on remote sensing and geographic information system technology, deeply analyzed land use/cover changes of Beitun oasis in recent 16 years by processing remote sensing images in 1989 and 2005. Based on field investiga-tion , laboratory analysis and " time-space substitution method" and other methods, the paper analyzed the response mechanism of soil and vegetation to land use/cover change in artificial oasis ecosystem. The results shown as fol-lows : (1) cultivated land area and saline or alkaline land area are increasing, cultivated land and grassland are continuously converted to saline or alkaline land, and cultivated land converted to grassland, which means that land reclamation and land abandonment become two main process of land use/cover change in the study area; (2) land use changes have great effects to soil nutrients and pH value, soil nutrient content of cultivated land is higher than that of the abandoned land and waste land, and the pH value of cultivated land is lower than that of abandoned land and waste land; ( 3 ) soil salt content of cultivated land is lower than that of the abandoned land and waste land, soil salinization is one of the most important threaten in Beitun oasis, and soil salinization types of Beitun oasis are chlorinate - sulfate and sulfate; (4) with the change of land use type, community composition changed a lot, and the dominant species changed significantly. Because the original vegetation had been damaged and soil structure had deteriorated, generally, it is hard to restore to uncultivated state when cultivated land is abandoned. While, in our research we find that the abandoned land of Beitun oasis can restore to the state similar to uncultivated without the disturbance of human beings.
中文关键词	人工绿洲 ; 土壤 ; 植被 ; 环境响应
英文关键词	RS、LUCC artificial oasis RS LUCC soil plant environmental response
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:3583267
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223562
作者单位	1.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.新疆林业科学研究院, 乌鲁木齐, 新疆 830002, 中国
推荐引用方式 GB/T 7714	董爽,王让会,宁虎森,等. 人工绿洲生态系统中土壤和植被对土地利用变化的响应以北屯绿洲为例[J]. 中国科学院新疆生态与地理研究所,2009,32(4):578-584.
APA	董爽,王让会,宁虎森,林毅,&黄俊芳.(2009).人工绿洲生态系统中土壤和植被对土地利用变化的响应以北屯绿洲为例.,32(4),578-584.
MLA	董爽,et al."人工绿洲生态系统中土壤和植被对土地利用变化的响应以北屯绿洲为例".32.4(2009):578-584.