干旱区生态环境知识资源中心(Arid): 浑善达克沙地正蓝旗沙漠化时空格局

Arid

	浑善达克沙地正蓝旗沙漠化时空格局
其他题名	On the spatio-temporal pattern of desertification in Zhenglan banner, Hunshandake sandy land
	武洁; 史明昌; 丁国栋
来源期刊	中国水土保持科学
ISSN	2096-2673
出版年	2019
卷号	17 期号:5 页码:110-119
中文摘要	浑善达克沙地沙漠化的发展严重危害生态环境、阻碍经济可持续发展,沙漠化的治理刻不容缓。本文以浑善达克腹地正蓝旗为研究区,利用19852015年的LandsatTM/OLI遥感影像及气象与社会经济数据,以归一化植被指数为参数指标构建沙漠化指数,采用指数分级、Theil-Sen趋势度分析及Mann-Kendall检验方法,对其沙漠化时空演变过程进行精准分析并采用Spearman等级相关法分析时空尺度上气象对于沙漠化驱动作用的时空差异性。结果表明: 1)近30年研究区沙漠化有所扩张且程度加重,在此过程中19851989年沙漠化开始扩张程度加重; 19892000年沙漠化继续扩张但程度减轻; 20002004年沙漠化收缩程度减轻; 20042015年沙漠化再次发展,程度加重。2)近30年正蓝旗沙漠化以非显著变化趋势为主,面积占比69.92%,显著变化趋势中上升趋势面积18.46%,主要位于东部,下降趋势面积11.62%,主要位于西部。3)近30年正蓝旗沙漠化变化是气候和人类活动尤其是畜牧业叠加的结果,其中人类活动是最主要的影响因素,气候的影响次之,且两者的叠加效应存在时空差异。
英文摘要	[Background] The development of desertification in Hunshandake sandy land seriously endangers the ecological environment and obstructs the sustainable development of economy,the control of desertification is urgent,it is of great significance to study the changing process and main causes of desertification in order to control desertification. Therefore,taking Zhenglan banner in the hinterland of sandy land as the study area to accurately analyze the process and causes of desertification change in this area would provide the basis for desertification control and ecological environment restoration in Hunshandake sandy land. [Methods]LandsatTM/OLI remote sensing image from 1985 to 2015 in the study area were used to calculate the normalized difference vegetation index and to construct the desertification index based on normalized difference vegetation index,the temporal and spatial variation of desertification index was analyzed using the index classification method,Theil-Sen trend analysis method and Mann-Kendall test method. Then based on the annual precipitation,annual average temperature from 1985 to 2015 in the study area,spearman grade correlation method was applied to analyze the spatiotemporal difference of the driving effect of meteorological factors on desertification. The influence of human activities on desertification was analyzed by using socio-economic data. [Results] 1 ) The desertification in the study area has expanded and aggravated in the past 30 years,and experienced 4 evolution in the process. From 1985 to 1989,desertification began to expand in the west and the degree of desertification increased; from 1989 to 2000,desertification continued to expand but the severity decreased; from 2000 to 2004,desertification shrank,the degree of desertification alleviated; from 2004 to 2015, desertification was reversed, the degree of desertification increased, and the degree of desertification expanded again. 2) From 1985 to 2015,the dominant trend of desertification in Zhenglan banner was non-significantly changed,its area reached 69.92% of the total desertification,and between the significantly change trends,the upward trend was mainly located in the east,its area reached 18.46%, the downward trend mainly located in the west,its area reached 11.62%. 3) The correlation between climate and desertification is mainly non-significantly correlation in space,which indicated that climate was not the most important influencing factor for the change of desertification in this area, the main factor was human activity. Therefore,the desertification change in Zhenglan banner was the result of the superposition of climate and human activities,especially animal husbandry. there are temporal and spatial differences in the superposition effects of climate and human activities. [Conclusions]The main reason for the increase of desertification in Zhenglan banner in the past 30 years is human activities,thus human activities should be restricted under the current unfavorable climate conditions,so as to achieve the purpose of ecological control.
中文关键词	沙漠化 ; 时空变化 ; 趋势分析 ; 正蓝旗 ; 浑善达克沙地
英文关键词	desertification temporal and spatial variation trend analysis Zhenglan banner Hunshandak sandy land
语种	中文
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:6610226
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315805
作者单位	北京林业大学水土保持学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	武洁,史明昌,丁国栋. 浑善达克沙地正蓝旗沙漠化时空格局[J]. 北京林业大学,2019,17(5):110-119.
APA	武洁,史明昌,&丁国栋.(2019).浑善达克沙地正蓝旗沙漠化时空格局.中国水土保持科学,17(5),110-119.
MLA	武洁,et al."浑善达克沙地正蓝旗沙漠化时空格局".中国水土保持科学 17.5(2019):110-119.