干旱区生态环境知识资源中心(Arid): 20002015年中国荒漠化土地识别和监测

Arid

	20002015年中国荒漠化土地识别和监测
其他题名	Identification and monitoring of desertification lands in China from 2000 to 2015
	胡云锋; 张云芝; 韩月琪
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2018
卷号	41 期号:6 页码:1321-1332
中文摘要	荒漠化是生态退化的极端表现形式,包括气候变异和人类活动在内的种种因素造成的干旱、半干旱和亚湿润干旱区的土地退化.快速和准确地识别中国荒漠化地区,是防范和治理荒漠化的关键.针对2000-2015年我国陆地生态系统NPP的变化趋势、稳定性和荒漠化敏感性进行了综合分析,构建了识别荒漠化土地的技术方法.结果表明:(1)近16 a以来,我国内蒙古阴山以南、新疆天山以北、西藏阿里地区、长江以南大部地区,植被净初级生产力均出现了不同程度的下降趋势,且一半以上的区域处于植被生态系统不稳定状况;在全国56.2%的国土属于荒漠化敏感区内,上述区域容易受气候、自然条件、人为干扰等影响而发生荒漠化.(2)2000年以来,我国土地荒漠化退化区域面积约20.74*10~4 km~2,占国土总面积的2.16%.主要为五大分布区域,即内蒙古高原中部的典型草原和荒漠化草原区、新疆天山一阿尔泰山山地草原区、新疆塔里木河下游的温带荒漠和绿洲区、青藏高原的阿里一昆仑山高寒荒漠区、青海省的青南山高寒草原区.(3)荒漠化进程伴随有生产力下降、植被盖度降低和地表温度不断攀升的地表关键参数演变特征,荒漠化的形成受气候影响显著,降雨的减少是造成土地荒漠化进程突出的主要因素;人类活动、不合理的种植业、畜牧业等在一定程度上对土地荒漠化起到推动作用.
英文摘要	Desertification is an extreme manifestation of ecological degradation which refers to land degradation in arid, semi-arid and dry sub-humid arid regions caused by various factors including climate variability and human activities. How to identify the desertification lands quickly and accurately is the key point to prevent and control deserts and desertification. This paper analyzes the changing trend,stability and desertification sensitivity of terrestrial ecosystem NPP in China from 2000 to 2015, and constructs a technical method to identify desertification lands. The main conclusions are as follows: (1) over the past 16 years, there have been different declining levels of net primary productivity in the south of Yin Mountain in Inner Mongolia,north of Tianshan Mountains in Xinjiang,and most regions in the south of Yangtze River,and vegetation ecosystem is in instability state in more than half of the regions; 56.2% of the country ’s land belongs to the desertification sensitive area, and the above area is susceptible to desertification due to climate,natural conditions and human disturbance. (2) Since 2000,the area of desertification lands in China is about 207 400 square kilometers,accounting for 2.16% of the total land area. The area can be divided into five regions,namely the typical grassland and desertification steppe in the central Inner Mongolia Plateau, the Tianshan-Altay Mountain steppe area in Xinjiang,the temperate desert and oasis area in the lower reaches of the Tarim River in Xinjiang, the alpine-desert area of the Ali-Kunlun Mountains in the Qinghai-Tibet Plateau and south Qinghai alpine grassland area. (3) The desertification process is accompanied by the evolution of key parameters such as the decrease of productivity,the decrease of vegetation cover and the rising surface temperature. The formation of desertification is affected by climate,and the decrease of rainfall is the main factor that causes the process of desertification. In addition,human activities and unreasonable farming and animal husbandry also formed the desertification in some extended.
中文关键词	荒漠化 ; 空间分布 ; 生态退化
英文关键词	NPP NPP desertification spatial distribution ecological degeneration
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:6386372
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237624
作者单位	中国科学院地理科学与资源研究所;;中国科学院大学, 资源与环境信息系统国家重点实验室;;, ;;, 北京;;北京 100101;;100049, 中国
推荐引用方式 GB/T 7714	胡云锋,张云芝,韩月琪. 20002015年中国荒漠化土地识别和监测[J]. 中国科学院地理科学与资源研究所,2018,41(6):1321-1332.
APA	胡云锋,张云芝,&韩月琪.(2018).20002015年中国荒漠化土地识别和监测.干旱区地理,41(6),1321-1332.
MLA	胡云锋,et al."20002015年中国荒漠化土地识别和监测".干旱区地理 41.6(2018):1321-1332.