DOI: 10.1002/jgrd.50675
论文题名: High sensitivity of a tropical rainforest to water variability: Evidence from 10 years of inventory and eddy flux data
作者: Tan Z.-H. ; Cao M. ; Yu G.-R. ; Tang J.-W. ; Deng X.-B. ; Song Q.-H. ; Tang Y. ; Zheng Z. ; Liu W.-J. ; Feng Z.-L. ; Deng Y. ; Zhang J.-L. ; Liang N. ; Zhang Y.-P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 16 起始页码: 9393
结束页码: 9400
语种: 英语
Scopus关键词: Carbon dioxide
; Climate change
; Drought
; Photosynthesis
; Canopy photosynthesis
; Ecosystem respiration
; Environmental perturbations
; Growth hypothesis
; High sensitivity
; Mortality rate
; Potential fate
; Tropical rain forest
; Tropics
; climate change
; data set
; drought stress
; ecosystem resilience
; eddy
; flux measurement
; photosynthesis
; rainforest
; remote sensing
; sensitivity analysis
; tropical environment
; water budget
英文摘要: The response of tropical rainforest to environmental perturbation is of critical importance given their potential to mitigate climate change. Nevertheless, it was not well addressed to date. Therefore, related hypotheses, i.e., CO2 fertilization-related accelerating growth hypothesis (AGH) and remote sensing-based drought resilience hypothesis (DRH), were necessarily to be testified. Here these hypotheses were tested through 10 years of annual inventory records and half-hourly eddy flux measurements from a tropical rainforest. We show that the studied forest is highly sensitive to water variability, with low canopy photosynthesis, slow stand growth, and high mortality rate in dry years, especially in the severe drought. Ecosystem respiration was not correlated with net water balance within years, but significant correlations were found between these parameters with a time lag of 10-15 months. A boom of photosynthesis in 1 year post drought was most probably a result of nutrient pulse-related drought. In general, neither AGH nor DRH was supported by the study. Given predictions that tropical areas will experience increasingly dry conditions in the future, much attention should be paid to the potential fate of carbon sink in tropical rainforests. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union. 资助项目: 31200347
; 41071071
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63392
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China; Global Carbon Cycle Research Section, Center for Global Environmental Studies, National Institute for Environmental Studies, Tsukuba, Japan; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Tan Z.-H.,Cao M.,Yu G.-R.,et al. High sensitivity of a tropical rainforest to water variability: Evidence from 10 years of inventory and eddy flux data[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)