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An increasing trend in the ratio of transpiration to total terrestrial evapotranspiration in China from 1982 to 2015 caused by greening and warming

文献类型：期刊论文

作者Niu, Zhongen1,3,4; He, Honglin1,3,5; Zhu, Gaofeng6; Ren, Xiaoli1,3; Zhang, Li1,3; Zhang, Kun7; Yu, Guirui1; Ge, Rong1,3,4; Li, Pan8; Zeng, Na1,3,4
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2019-12-15
卷号279页码:12
ISSN号0168-1923
关键词Transpiration to total terrestrial evapotranspiration ratio (T/ET) Greening Climate warming Model-data fusion PT-JPL model Terrestrial ecosystem of China
DOI10.1016/j.agrformet.2019.107701
通讯作者He, Honglin(hehl@igsnrr.ac.cn) ; Ren, Xiaoli(renxl@igsnrr.ac.cn)
英文摘要The ratio of transpiration to total terrestrial evapotranspiration (T/ET) plays an important role in the hydrological cycle and in the energy budgets between the land and the atmosphere. Although China has experienced substantial climate warming and vegetation restoration (i.e., greening) over the past decades, the response of T/ET to the changing climate and environmental factors is poorly understood. Here, we apply a model-data fusion method that integrates the Priestly-Taylor Jet Propulsion Laboratory (PT-JPL) model with multivariate observational datasets (transpiration and evapotranspiration) to quantify the relative contributions of multiple factors to the T/ET trend for the terrestrial ecosystem of China from 1982 to 2015. Validation against the observational data indicates that the PT-JPL model performed well. The multi-year average T/ET was estimated to be 0.56 +/- 0.05 in China. The T/ET of the forest ecosystems (0.65-0.72) was generally higher than that of the non-forest ecosystems (0.41-0.60). T/ET increased remarkably at a rate of 0.0019 yr(-1) (P < 0.01) during the study period. Leaf area index increased significantly over the period, by 0.0031 m(2)m(-2) yr(-1). It appears that greening and climate change were the most likely causes of the increasing T/ET in China, directly explaining 57.89% and 36.84% of the T/ET trend, respectively. Particularly, in the subtropical-tropical monsoonal region, greening directly contributed 24.43% to the T/ET trend whereas climate change contributed 60.95%. The influences of greening and climate change on T/ET trends are mutually reinforcing. Additionally, partial correlation analyses between the climate-driven T/ET and the climate variables indicate that warming (0.04 degrees C yr(-1), P < 0.01) was the major driving force of the climate-induced interannual variability of T/ET across the whole study area (R = 0.84), especially in the subtropical-tropical monsoonal region (R = 0.89). Our results may help elucidate the interactions between terrestrial ecosystems and the atmosphere within the context of long-term global climate changes.
WOS关键词PHOTOSYNTHETICALLY ACTIVE RADIATION ; NET PRIMARY PRODUCTIVITY ; WATER-USE EFFICIENCY ; WACMOS-ET PROJECT ; HEIHE RIVER-BASIN ; PARTITIONING EVAPOTRANSPIRATION ; EDDY-COVARIANCE ; CARBON-DIOXIDE ; TEMPERATE FOREST ; BAYESIAN CALIBRATION
资助项目National Key Research and Development Program of China[2016YFC0500204] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19020301]
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种英语
出版者ELSEVIER
WOS记录号WOS:000500197400011
资助机构National Key Research and Development Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/130580]  
专题地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者He, Honglin; Ren, Xiaoli
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Southwest Univ, Chongqing Engn Res Ctr Remote Sensing Big Data Ap, Sch Geog Sci, Chongqing 400715, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Natl Ecol Sci Data Ctr, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
6.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Gansu, Peoples R China
7.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
8.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Niu, Zhongen,He, Honglin,Zhu, Gaofeng,et al. An increasing trend in the ratio of transpiration to total terrestrial evapotranspiration in China from 1982 to 2015 caused by greening and warming[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,279:12.
APA Niu, Zhongen.,He, Honglin.,Zhu, Gaofeng.,Ren, Xiaoli.,Zhang, Li.,...&Zhu, Xiaobo.(2019).An increasing trend in the ratio of transpiration to total terrestrial evapotranspiration in China from 1982 to 2015 caused by greening and warming.AGRICULTURAL AND FOREST METEOROLOGY,279,12.
MLA Niu, Zhongen,et al."An increasing trend in the ratio of transpiration to total terrestrial evapotranspiration in China from 1982 to 2015 caused by greening and warming".AGRICULTURAL AND FOREST METEOROLOGY 279(2019):12.

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来源：地理科学与资源研究所

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