干旱区生态环境知识资源中心(Arid): 1982-2012年北半球荒漠草原过渡带植被物候特征及其与气候因子的关系

Arid

	1982-2012年北半球荒漠草原过渡带植被物候特征及其与气候因子的关系
其他题名	Characteristics of Phenology Changes and Its Relationship with Climatic Factors in Desert/Grassland Biome Transition Zone of Northern Hemisphere During 1982-2012
	候静 1; 杜灵通 1; 刘可 1; 朱玉果 1; 胡悦 1; 杨新国 1; 张学俭 2
来源期刊	气候变化研究进展
ISSN	1673-1719
出版年	2017
卷号	13 期号:5 页码:473-482
中文摘要	基于GIMMS(global inventory modeling and mapping studies)NDVI 3g数据,在提取北半球荒漠草原过渡带每年植被物候期的基础上,研究了1982-2012年物候期的时间演化趋势及空间分异特征,并结合全球气候再分析资料,探讨了物候变化的气候驱动因素。结果表明:在1998年之前,荒漠草原过渡带植被物候期变化地区间差异较大,而在1998年之后,北半球荒漠草原过渡带生长季结束期整体提前,平均提前0.41 d/a;同时,除萨赫勒以外的各地区植被生长季长度普遍缩短,平均缩短0.88 d/a。植被物候期与气候因子的相关分析发现,荒漠草原过渡带植被物候变化受气候变化影响显著,且空间差异明显。在中高纬度地区,气温是限制植被活动的关键因子,温度升高可以促进生长季开始期的提前,而降水增加则会妨碍植被生长;在较低纬度地区,水分是影响植被活动的关键因素,高温造成的水分亏缺会导致植被生长季缩短。从植被物候期对各气候因子响应的时滞性来看,荒漠草原过渡带植被的物候期对气温变化的响应最迅速,对蒸散的响应存在一定的滞后性,而对降水的响应不存在时滞差异。
英文摘要	The annual vegetation phenology in the desert/grassland biome transition zone of Northern Hemisphere was deduced from the GIMMS NDVI 3g dataset and the spatio-temporal changes of phenology during 1982-2012 were studied. At the same time, the climatic driving factors of phenology change were also analyzed by coupling global meteorological reanalysis data. The results show that the vegetation phenology in each desert/grassland biome transition zone during 1982-1997 had different characteristics. However, the regular phenomenon of vegetation phenology changed after 1998. The end of growth season (EOS)in almost all desert/grassland biome transition zones of Northern Hemisphere became earlier during 1998-2012, which the rate is 0.41 d/a. The length of growth season (LOS)shortened in each region except for the Sahel, which the average shorten rate is 0.88 d/a. The correlation analysis between vegetation phenology and climatic factors show that the phenology of desert/grassland biome transition zone is affected by climate significantly and the main driving factors are different in each region. In the middle and high latitudes, the temperature is the key factor to limit the vegetation activity and the temperature rising can promote the start of growth season earlier. However, the precipitation increasing could weaken the growth of vegetation in these regions. In contrast, the water deficit that caused by the high temperature could shorten the vegetation growing season, and that is the key impact factor in the low latitudes of Northern Hemisphere. Finally, the relationship between phenology and climatic factors in different time-lags were also analyzed. The results show that the phenology change of desert/grassland biome transition zone is responded obviously to temperature change. In addition, there has a time lag effect in the response of phenology change to evapotranspiration. Nevertheless, this rule does not exist between phenology change and precipitation.
中文关键词	物候 ; 气候变化 ; 荒漠草原过渡带 ; GIMMS NDVI 3g数据
英文关键词	phenology climate change desert/grassland biome transition zone GIMMS NDVI 3g dataset
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6086837
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/2XILL650/236370
作者单位	1.宁夏大学, 西北土地退化与生态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; 2.宁夏农林科学院, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	候静,杜灵通,刘可,等. 1982-2012年北半球荒漠草原过渡带植被物候特征及其与气候因子的关系[J]. 宁夏大学,2017,13(5):473-482.
APA	候静.,杜灵通.,刘可.,朱玉果.,胡悦.,...&张学俭.(2017).1982-2012年北半球荒漠草原过渡带植被物候特征及其与气候因子的关系.气候变化研究进展,13(5),473-482.
MLA	候静,et al."1982-2012年北半球荒漠草原过渡带植被物候特征及其与气候因子的关系".气候变化研究进展 13.5(2017):473-482.