干旱区生态环境知识资源中心(Arid): 宁夏不同生态功能区20002010年生态干旱特征及驱动分析

Arid

	宁夏不同生态功能区20002010年生态干旱特征及驱动分析
其他题名	Ecological drought characteristics and analysis of driving factors of different ecological zones in Ningxia from 2000 to 2010
	杜灵通; 刘可; 胡悦; 朱玉果; 宫菲
来源期刊	自然灾害学报
ISSN	1004-4574
出版年	2017
卷号	26 期号:5 页码:149-156
中文摘要	研究了不同生态功能区植被生态系统对干旱的响应。利用MODIS归一化植被指数和地表温度数据,构建温度植被干旱指数(temperature vegetation dryness index,TVDI),定量研究宁夏3个不同生态功能区20002010年的生态干旱特征,并分析其驱动因素。研究结果表明:近十年来,宁夏北部引黄灌区的生态干旱最弱,中部干旱带最强;生态干旱虽以波动为主,但同时存在一定的内在变化趋势,平均干旱强度在最近几年均有减弱的趋势。灰色关联度分析得出,中部干旱带驱动着宁夏全区的生态干旱状况,3个生态功能区的春旱均决定着其全年生态干旱状态,这一规律与宁夏植被生态格局有关。中部干旱带的生态干旱主要由单一降水因素所驱动,而北部引黄灌区与南部丘陵山区则是多因素复杂驱动,且普遍存在同季降水对生态干旱的影响大于上季降水的作用。本研究可为地方政府制定适宜的抗旱救灾行动提供科学依据。
英文摘要	The response of vegetation ecosystem to drought in different ecological zones in Ningxia is studied. Based on MODIS normalized difference vegetation index (NDVI) and land surface temperature (LST) data,the temperature vegetation dryness index (TVDI),which could measure the intensity of ecological drought,is constructed and used to study the quantitative drought characteristics in three different ecological zones of Ningxia Province from 2000 to 2010. The driving factors of ecological drought are also analyzed. The results show that the intensity of ecological drought of the Yellow River irrigation area of northern Ningxia is weakest in recent 10 years. By contrast, the strongest ecological drought occurred in the arid zone of middle Ningxia. Ecological drought mainly fluctuated with a slight inherent trend and the average intensity of ecological drought in recent 10 years was weakening. The results of grey relational analysis (GCA) indicate that the intensity of ecological drought of whole province is derived by the ecological drought of arid zone of middle Ningxia and the annual intensity of ecological drought of three ecological zones is driven by their spring drought respectively,and the law is related to the pattern of vegetation and ecology of Ningxia. The intensity of ecological drought of arid zone of middle Ningxia is driven singly by the precipitation, while the intensity of ecological drought of Yellow River irrigation area of northern Ningxia and mountains area of southern Ningxia is driven by complex factors. In general,the impact of precipitation on ecological drought in the same season is more remarkable than in last season. The study could provide scientific evidence for the local government to make an appropriate action for disaster relief.
中文关键词	生态干旱 ; 生态功能区 ; 温度植被干旱指数 ; 驱动因素 ; 宁夏
英文关键词	ecological drought ecological zones temperature vegetation dryness index driving factors Ningxia Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; ENVIRONMENTAL SCIENCES
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
CSCD记录号	CSCD:6112258
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237245
作者单位	宁夏大学, 西北土地退化与生态系统恢复宁夏省省部共建国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	杜灵通,刘可,胡悦,等. 宁夏不同生态功能区20002010年生态干旱特征及驱动分析[J]. 宁夏大学,2017,26(5):149-156.
APA	杜灵通,刘可,胡悦,朱玉果,&宫菲.(2017).宁夏不同生态功能区20002010年生态干旱特征及驱动分析.自然灾害学报,26(5),149-156.
MLA	杜灵通,et al."宁夏不同生态功能区20002010年生态干旱特征及驱动分析".自然灾害学报 26.5(2017):149-156.