The Response of Vegetation Phenology and Productivity to Drought in Semi-Arid Regions of Northern China | |
Kang, Wenping1,2; Wang, Tao1; Liu, Shulin1 | |
刊名 | REMOTE SENSING
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2018-05-01 | |
卷号 | 10期号:5页码:15 |
关键词 | vegetation phenology productivity drought SPEI semi-arid region |
ISSN号 | 2072-4292 |
DOI | 10.3390/rs10050727 |
通讯作者 | Liu, Shulin(liusl@lzb.ac.cn) |
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. |
收录类别 | SCI |
WOS关键词 | NDVI TIME-SERIES ; PRECIPITATION EVAPOTRANSPIRATION INDEX ; LAND-SURFACE PHENOLOGY ; NET PRIMARY PRODUCTION ; GREEN-UP DATE ; INTERANNUAL VARIABILITY ; TEMPERATE ECOSYSTEMS ; SPRING PHENOLOGY ; INNER-MONGOLIA ; HIGH-LATITUDES |
WOS研究方向 | Remote Sensing |
WOS类目 | Remote Sensing |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000435198400069 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2557805 |
专题 | 寒区旱区环境与工程研究所 |
通讯作者 | Liu, Shulin |
作者单位 | 1.Chinese Acad Sci, Key Lab Desert & Desertificat, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, 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]. REMOTE SENSING,2018,10(5):15. |
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),15. |
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):15. |
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