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	新疆北部植被生长季NDVI时空变化及其与冬季降雪的关系
其他题名	Spatial-temporal Variation of NDVI for Growing Season and Its Relationship with Winter Snowfall in Northern Xinjiang
	杨涛; 黄法融; 李倩; 白磊; 李兰海
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2017
卷号	32 期号:6 页码:1132-1140
中文摘要	植被是陆地生态系统最重要的组成部分,在调节陆地碳循环过程和气候变化中起着关键作用。冬季降雪为植被生长提供良好的水分条件,加强冬季降雪与植被关系研究具有重要的生态意义。利用1982~2013年GIMMS NDVI数据,基于趋势分析研究了北疆4~10月植被覆盖的时空变化特征,并结合WRF模拟冬季降雪数据,采用基于栅格的相关性分析方法,分析了各月NDVI对冬季降雪的响应及不同生态系统之间大小的差异。结果表明:①北疆地区4~10月NDVI总体呈增加趋势,增加区域主要位于农田地区和高海拔草地,但准噶尔盆地中东部地区呈减少趋势;②区域内冬季降雪基本呈环状分布,中部少、四周高,冬季降雪呈增加趋势;③冬季降雪与5、6月NDVI显著正相关的面积最大,且显著正相关区域主要位于准噶尔盆地的荒漠生态系统;④冬季降雪对整个研究区以及不同生态系统类型NDVI的影响具有显著的滞后性,对4~10月NDVI的影响均呈现先增大后减小的趋势,且对6月NDVI的影响最大。
英文摘要	Vegetation is the most important component of terrestrial ecosystem,and plays a key role in regulating land carbon balance and climate change.In arid zones,vegetation growth during the growing season primarily depends on winter snowfall,and further research is required on the relationship between vegetation and winter snowfall.Based on GIMMS NDVI during the growing season(April to October)and winter snowfall data simulated by WRF in northern Xinjiang from 1982 to 2013,this study used trend analysis and correlation analysis pixel by pixel to investigate the spatial pattern of NDVI variation,correlation between NDVI and winter snowfall,and the influence of winter snowfall on different ecosystems.The results indicated that:NDVI increased in northern Xinjiang during the growing season,and the increased area is mainly located in farmland and high altitude meadow,while the middle and eastern parts of Junggar Basin showed a decreasing trend.In the study area,winter snowfall showed an increasing trend and the spatial distribution of winter snowfall presented a ring-shape:winter snowfall increases from the central part to the surrounding area.The largest significantly positive correlation between winter snowfall and NDVI was in May and June,and was mainly concentrated in the desert ecosystem of Junggar basin.NDVI of different ecosystems in northern Xinjiang had the hysteresis to winter snowfall,and the impact of winter snowfall on monthly NDVI increases from April,peaks in June,then decreases until the end of the growth season.
中文关键词	降雪 ; 生态系统 ; 北疆
英文关键词	NDVI WRF NDVI WRF Snowfall Ecosystem Northern Xinjiang
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:6148628
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236890
作者单位	中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	杨涛,黄法融,李倩,等. 新疆北部植被生长季NDVI时空变化及其与冬季降雪的关系[J]. 中国科学院新疆生态与地理研究所,2017,32(6):1132-1140.
APA	杨涛,黄法融,李倩,白磊,&李兰海.(2017).新疆北部植被生长季NDVI时空变化及其与冬季降雪的关系.遥感技术与应用,32(6),1132-1140.
MLA	杨涛,et al."新疆北部植被生长季NDVI时空变化及其与冬季降雪的关系".遥感技术与应用 32.6(2017):1132-1140.