气候变化领域集成服务门户(CCPortal): The Response of Vegetation Phenology and Productivity to Drought in Semi-Arid Regions of Northern China

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DOI	10.3390/rs10050727
	The Response of Vegetation Phenology and Productivity to Drought in Semi-Arid Regions of Northern China
	Kang, Wenping; Wang, Tao; Liu, Shulin
发表日期	2018
ISSN	2072-4292
卷号	10 期号:5
英文摘要	A major disturbance in nature, drought, has a significant impact on the vulnerability and resilience of semi-arid ecosystems by shifting phenology and productivity. However, due to the various disturbance mechanisms, phenology and primary productivity have remained largely ambiguous until now. This paper evaluated the spatio-temporal changes of phenology and productivity based on GIMMS NDVI3g time series data, and demonstrated the responses of vegetation phenology and productivity to drought disturbances with the standardized precipitation evapotranspiration index (SPEI) in semi-arid ecosystems of northern China. The results showed that (1): vegetation phenology exhibited dramatic spatial heterogeneity with different rates, mostly presented in the regions with high chances of land cover type variation. The delayed onset of growing season (SOS) and advanced end of growing season (EOS) occurred in Horqin Sandy Land and the eastern Ordos Plateau with a one to three days/decade (p < 0.05) rate and in the middle and east of Inner Mongolia with a two days/decade rate, respectively. Vegetation productivity presented a clear pattern: south increased and north decreased. (2) Spring drought delayed SOS in grassland, barren/sparsely vegetated land, and cropland, while autumn drought significantly advanced EOS in grassland and barren/sparsely vegetated lands. Annual drought reduced vegetation productivity and the sensitivity of productivity regarding drought disturbance was higher than that of phenology.
关键词	vegetation phenology productivity drought SPEI semi-arid region
学科领域	Remote Sensing
语种	英语
WOS研究方向	Remote Sensing
来源期刊	REMOTE SENSING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111971
作者单位	Chinese Acad Sci, Key Lab Desert & Desertificat, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Kang, Wenping,Wang, Tao,Liu, Shulin. The Response of Vegetation Phenology and Productivity to Drought in Semi-Arid Regions of Northern China[J]. 中国科学院西北生态环境资源研究院,2018,10(5).
APA	Kang, Wenping,Wang, Tao,&Liu, Shulin.(2018).The Response of Vegetation Phenology and Productivity to Drought in Semi-Arid Regions of Northern China.REMOTE SENSING,10(5).
MLA	Kang, Wenping,et al."The Response of Vegetation Phenology and Productivity to Drought in Semi-Arid Regions of Northern China".REMOTE SENSING 10.5(2018).