globalchange  > 气候变化与战略
DOI: 10.1029/2019GB006418
论文题名:
Precipitation δ18O Recorded by the α-Cellulose δ18O of Plant Residues in Surface Soils: Evidence From a Broad Environmental Gradient in Inland China
作者: Shi F.; Rao Z.; Li Y.; Cao J.; Shi X.; Li C.; Sun W.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期:11
语种: 英语
英文关键词: altitude ; biogeochemistry ; cellulose ; environmental gradient ; isotopic fractionation ; oxygen isotope ; plant residue ; precipitation intensity ; relative humidity ; soil analysis ; China ; Qinghai-Xizang Plateau
学科: apparent isotopic fractionation ; cellulose ; oxygen isotope ; paleoaltimetry ; Tibetan Plateau ; δ18Ocell-δ18Op relationship
中文摘要: In order to determine the potential of α-cellulose δ18O (δ18Ocell) data from multiple terrestrial plant species on an ecosystem level to record the δ18O data of precipitation (δ18Op), especially in relatively cold and arid environments, we collected samples of terrestrial plant residues from 104 surface soils covering a large environmental gradient (~29 to 51°N in latitude, ~81 to 124°E in longitude, ~200 to 5,100 m in elevation) in inland China. Despite the diverse vegetation types, wide range of climatic conditions and potentially complex biogeochemical processes operating within the vast study region, the δ18Ocell data show a similar spatial pattern to that of δ18Op. The results demonstrate that the measured values of δ18Ocell data have the potential to record variations in δ18Op. Further analysis indicated that the δ18Ocell data from the Tibetan Plateau were primarily controlled by the moisture sources. Interestingly, there are significant negative correlations between δ18Ocell/δ18Op and altitude on the Tibetan Plateau, implying the potential of δ18Ocell for paleoaltimetry in this region. The δ18Ocell data from the northern region of China (including the East Asian monsoon-margin and arid central Asia) were mainly controlled by temperature, although the influence of relative humidity in the region is not negligible. Our results provide a fundamental reference for related δ18Ocell studies aimed to improve our understanding of environmental, hydrological, and climatic changes in inland China and elsewhere. ©2019. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160090
Appears in Collections:气候变化与战略

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作者单位: College of Resources and Environmental Sciences, Hunan Normal University, Changsha, China; Key Laboratory of State Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, College of Forestry, Jiangxi Agricultural University, Nanchang, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China; State Key Laboratory of Marine Geology, Tongji University, Shanghai, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China

Recommended Citation:
Shi F.,Rao Z.,Li Y.,et al. Precipitation δ18O Recorded by the α-Cellulose δ18O of Plant Residues in Surface Soils: Evidence From a Broad Environmental Gradient in Inland China[J]. Global Biogeochemical Cycles,2019-01-01,33(11)
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