干旱区生态环境知识资源中心(Arid): 19822015年中国北方归一化植被指数( NDVI)变化特征及对气候变化的响应

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	19822015年中国北方归一化植被指数( NDVI)变化特征及对气候变化的响应
其他题名	Variation Characteristic of NDVI and Its Response to Climate Change in Northern China From 1982 to 2015
	何航; 张勃; 侯启; 李帅; 马彬; 马尚谦
来源期刊	生态与农村环境学报
ISSN	1673-4831
出版年	2020
卷号	36 期号:1 页码:70-80
中文摘要	基于中国北方19822015年GIMMS NDVI数据及408个气象站点逐日气象资料,采用极点对称模态分解( ESMD)方法、M-K趋势检验、相关分析、趋势分析和极端气候指数,分析了19822015年中国北方15个省(自治区、直辖市)植被覆盖时空演变特征及其对气候变化和极端气候的响应。结果表明: 19822015年中国北方植被 NDVI以0. 002( 10 a) -1速度呈增加趋势( P<0. 05) ,ESMD方法显示生长季NDVI呈波动上升; NDVI显著增加区域包括新疆北部天山及塔里木盆地北缘、甘肃祁连山区及陇南山地、黄土高原和河套平原、辽西低山丘陵一带、吕梁山及太行山区,NDVI显著减少区域主要集中在东北地区大、小兴安岭及长白山一带;从植被类型上来看,植被覆盖增加最多的是栽培植被、草地和荒漠植被;生长季NDVI与温度和降水整体呈正相关且对气温的响应更强烈, NDVI空间分布格局存在异质性; 19822015年极端气温指数均呈极显著增加或减少趋势,极端降水指数中仅1日最大降水量、异常降水总量呈显著增加趋势;气温极值对NDVI的影响强于降水极值,最低气温和暖夜日数与 NDVI关系最密切。
英文摘要	Climate change is likely to affect vegetation dynamics. The spatial-temporal interannual change in vegetation index were analyzed,and both seasonal variation and variation in growing season were assessed based on the satellite-derived normalized difference vegetation index ( NDVI) and the daily climate data collected from 408 meterological stations all over northern China from 1982 to 2015. Further,the response of NDVI to climate change,particularly climatic extremes were studied,using GIMMS NDVI 3g V1. 0,daily temperature and precipitation datasets. Across the whole of northern China, linear regressions indicated a increasing trend of growing season NDVI values at rate of 0. 002 ( 10 a) -1 from 1982 to 2015,as temperature increased and precipitation decreased. The extreme-point symmetric mode decomposition ( ESMD) method showed that the increasing rates of NDVI gradually intensified until 1992,followed by a slightly declining until 2005,and then gradually increasing again. There were spatial differences in the NDVI changes and the area of vegetation improvement accounted for 62. 8% of northern China. The regions with significantly increased NDVI were mainly distributed in the Tianshan Mountain and northern Tarim Basin in northern Xinjiang,Qilian Mountains and mountain area of Longnan in Gansu,the hilly region of western Liaoning,and the Loess Plateau,Hetao Plain,Luliang Mountain,and Taihang Mountains in Shanxi Province. Regions with significantly decreased NDVI were predominantly distributed in the Daxing'an,Xiaoxing'an,and Changbai Mountains. The greatest increase in NDVI in northern China was observed in cultivated vegetation,grassland,and desert vegetation. The growing season NDVI in northern China was positively correlated with temperature and precipitation,and was more responsive to temperature. There was an obvious spatial heterogeneity in the distribution pattern. The extreme climate index was used to assess the response of NDVI to climate extremes. All extreme temperature indices showed highly significant increasing trend,whereas only maximum one-day precipitation ( Rx1day) and very wet days ( R95p) showed significant increase in extreme precipitation. Temperature extremes had stronger impact on NDVI than precipitation extremes,with minimum temperature ( TMINmean) and warm nights ( TN90p) most closely related to NDVI. The results suggest that climate change and climatic extremes potentially have deeper and more complex effects on ecosystems than previously understood.
中文关键词	中国北方 ; GIMMS NDVI 3g V1. 0数据集 ; 时空变化 ; 气候因子 ; 极端气候 ; 响应 ; 极点对称模态分解( ESMD)
英文关键词	northern China GIMMS NDVI 3g V1. 0 dataset temporal and spatial variation climatic factor climate extreme response extreme-point symmetric mode decomposition ( ESMD)
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6662948
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316243
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	何航,张勃,侯启,等. 19822015年中国北方归一化植被指数( NDVI)变化特征及对气候变化的响应[J]. 西北师范大学,2020,36(1):70-80.
APA	何航,张勃,侯启,李帅,马彬,&马尚谦.(2020).19822015年中国北方归一化植被指数( NDVI)变化特征及对气候变化的响应.生态与农村环境学报,36(1),70-80.
MLA	何航,et al."19822015年中国北方归一化植被指数( NDVI)变化特征及对气候变化的响应".生态与农村环境学报 36.1(2020):70-80.