干旱区生态环境知识资源中心(Arid): 基于植被覆盖特征的土地沙漠化敏感性评价以乌珠穆沁草原为例

Arid

	基于植被覆盖特征的土地沙漠化敏感性评价以乌珠穆沁草原为例
其他题名	Evaluation on land desertification sensitivity of Ujimqin grassland based on vegetation cover indicator
	美丽 1; 都瓦拉 2; 银山 3; 玉山 4
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2017
卷号	31 期号:5 页码:113-118
中文摘要	敏感性评价可以定量揭示研究区的生态环境敏感性程度和空间分布特征,利用2000-2015年的MODIS13Q1植被指数、气象及土壤数据,结合趋势分析法、Kriging空间插值和空间叠加法对乌珠穆沁草原进行土地沙漠化敏感性评价。结果表明: (1) 2000-2015年乌珠穆沁草原年平均NDVI值总体呈上升趋势。植被NDVI值在生长季(4-9月)呈上升趋势,其中6、7和8月份的植被NDVI值明显高于其它月份,增速达到7.13% /10a、 5.83% /10a和1.52% /10a,10月份NDVI值明显呈下降趋势,增速达-0.07% /10a。(2)空间分布上,NDVI值由东南向西北降低特征,东南部的森林植被NDVI值较高,西北部荒漠区的NDVI值较低。中覆盖度是研究区主要植被覆盖类型,占总面积的62.30%,面积为42557.69km~2。(3)乌珠穆沁草原的土地沙漠化敏感性指数在2.23607-7.77006之间,中度敏感区分布在乌珠穆沁草原的北部,面积宽广占研究区总面积的72.42%。高度敏感区分布在乌珠穆沁草原的植被覆盖度较低,沙质土壤为主,风沙天气较多的沙地区域,研究区以中度敏感为主。
英文摘要	Sensitivity evaluation can quantitatively reveal the ecological environment sensitivity and spatial distribution characteristics. In this research,soil desertification sensitivity of Ujimqin grassland was evaluated by using of the 2000-2015 MODIS13Q1 vegetation index,meteo-rological and soil data,trend analysis method,Kriging spatial interpolation and spatial superposition method. Results show that: (1) annual average NDVI value of Ujimqin grassland during 2000-2015 overall showed upward trend. NDVI values during the growing season (April to September) was on the rise,while in June,July and August the NDVI value was significantly higher than other month; the growth rate reached 7.13% /10a,1.52% /10a and 5.83% /10a. NDVI value in October showed obvious trend of decline; the growth rate-0.07% /10a. (2) The spatial distribution of NDVI values from southeast to northwest reduced. In the southeast of the study area the forest vegetation NDVI value was higher, the northwest desert region of NDVI values was lower. Moderate coverage was the main vegetation cover types,accounting for 62.30% of the total area,with an area of 42557.69km~2. (3) Ujimqin grassland desertification sensitivity index was between in 2.23607-7.77006. Moderately sensitive zone distributed in the north Ujimqin grassland,it accounted for 72.42% of the total area of the study area. Highly sensitive area distributed in where the vegetation coverage was low with sandy soil,and a lot of sandstorm weather. The study area is given priority to moderate sensitivity.
中文关键词	植被覆盖度 ; 土地沙漠化 ; 敏感性评价 ; 乌珠穆沁草原
英文关键词	vegetation coverage land desertification sensitivity evaluation Ujimqin Grassland
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5960954
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236055
作者单位	1.内蒙古师范大学地理科学学院, 呼和浩特, 内蒙古 010022, 中国; 2.内蒙古自治区生态与农业气象中心, 呼和浩特, 内蒙古 010051, 中国; 3.内蒙古师范大学地理科学学院, 内蒙古自治区遥感与地理信息重点实验室, 呼和浩特, 内蒙古 010022, 中国; 4.内蒙古师范大学, 内蒙古自治区遥感与地理信息重点实验室, 呼和浩特, 内蒙古 010022, 中国
推荐引用方式 GB/T 7714	美丽,都瓦拉,银山,等. 基于植被覆盖特征的土地沙漠化敏感性评价以乌珠穆沁草原为例[J],2017,31(5):113-118.
APA	美丽,都瓦拉,银山,&玉山.(2017).基于植被覆盖特征的土地沙漠化敏感性评价以乌珠穆沁草原为例.干旱区资源与环境,31(5),113-118.
MLA	美丽,et al."基于植被覆盖特征的土地沙漠化敏感性评价以乌珠穆沁草原为例".干旱区资源与环境 31.5(2017):113-118.