干旱区生态环境知识资源中心(Arid): 哈萨克斯坦1982-2015年植被时空变化

Arid

	哈萨克斯坦1982-2015年植被时空变化
其他题名	Spatio-temporal Patterns of Vegetation Change in Kazakhstan from 1982 to 2015
	罗亮 ; 杜文鹏 ; 闫慧敏 ; 甄霖 ; 董昱
来源期刊	资源与生态学报
ISSN	1674-764X
出版年	2017
卷号	8 期号:4 页码:378-384
中文摘要	归一化植被指数(NDVI)作为表征植被生长状况的关键性指标,能够有效的提供植被生长状况的信息。本研究基于1982-2015年哈萨克斯坦时间序列的GIMMS/NDVI数据,分析植被)生长的空间格局及变化趋势,研究结果表明:哈萨克斯坦自北向南分布着农田、草地、灌丛这三类主要的植被类型,呈明晰的地带性分布特征;植被指数由北到南逐渐降低,农田、草地和灌丛三类主要植被类型的NDVI均值水平依次为农田>草地>灌丛;1982-2015年间,NDVI呈现出先增长(1982-1992年)、再降低(1993-2007年)、然后又增长(2008-2015年)的变化趋势。NDVI显著下降的区域占土地总面积的24.0%,主要分布在西北部的农田与草地交错地带以及南部边缘的农田,草地退化面积占草地总面积的23.5%、农田退化面积占农田总面积的48.4%、灌丛退化面积占灌丛总面积的13.7%,植被改善的区域分布在中东部的农田以及农田与草地的交错带,显著提升的面积占土地总面积的11.8%。
英文摘要	The Normalized Difference Vegetation Index (NDVI), as a key indicator of vegetation growth, effectively provides information regarding vegetation growth status. Based on the Global Inventory Monitoring and Modeling System (GIMMS) NDVI time series data for Kazakhstan from 1982 to 2015, we analyzed the spatial pattern and changes in the vegetation growth trend. Results indicated that the three main types of vegetation in Kazakhstan are cropland, grassland and shrubland, and these are distributed from north to south. While the regional distribution pattern is obvious, the vegetation index decreased from north to south. The average NDVI values of the three main vegetation types are in the order of cropland > grassland > shrubland. During the period from 1982 to 2015, the NDVI initially increased (1982-1992), then decreased (1993-2007), and then increased again (2008-2015). The areas where NDVI decreased significantly accounted for 24.0% of the total land area. These areas with vegetation degradation are mainly distributed in the northwest junction between cropland and grassland, and in the cropland along the southern border. The proportions of total grassland, cropland and shrubland areas that were degraded are 23.5%, 48.4% and 13.7%, respectively. Areas with improved vegetation, accounting for 11.8% of the total land area, were mainly distributed in the mid-east cropland area, and the junction between cropland and grassland in the mid-east region.
中文关键词	生态退化 ; 土地利用 ; 趋势分析 ; 哈萨克斯坦
英文关键词	Normalized Difference Vegetation Index (NDVI) desertification land use trends analysis Kazakhstan NDVI
语种	英语
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6039693
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237235
作者单位	1.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2.College of Earth Science and Resources, Chang-an university, Xi'an, Shaanxi 710054, China
推荐引用方式 GB/T 7714	罗亮,杜文鹏,闫慧敏,等. 哈萨克斯坦1982-2015年植被时空变化[J],2017,8(4):378-384.
APA	罗亮,杜文鹏,闫慧敏,甄霖,&董昱.(2017).哈萨克斯坦1982-2015年植被时空变化.资源与生态学报,8(4),378-384.
MLA	罗亮,et al."哈萨克斯坦1982-2015年植被时空变化".资源与生态学报 8.4(2017):378-384.