[1]WANG Chunxue,QIN Ningsheng,ZHOU Bin,et al.Spatial and Temporal Variations of Climate-Induced Potential Productivity of Vegetation in Northwestern Sichuan Plateau Since 1850[J].Research of Soil and Water Conservation,2020,27(06):188-195.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
188-195
Column:
目次
Public date:
2020-10-20
- Title:
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Spatial and Temporal Variations of Climate-Induced Potential Productivity of Vegetation in Northwestern Sichuan Plateau Since 1850
- Author(s):
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WANG Chunxue1, QIN Ningsheng1, ZHOU Bin2, PANG Yishu2, LUO Yu2, MAO Haixiang3
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(1.Institute of Plateau Meteorology, China Meteorological Administration, Chengdu/ Key Laboratory of Heavy Rain and Drought-Flood Disasters in Plateau and Basin of Sichuan Province, Chengdu 610072, China; 2.Sichuan Provincial Climate Center, Chengdu 610072, China; 3.Tongren Meteorological Bureau, Tongren, Sichuan 554300, China)
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- Keywords:
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climate change; climate-induced potential productivity of vegetation; Miami Model; tree rings
- CLC:
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S162
- DOI:
-
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- Abstract:
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In order to study the spatial and temporal variations of climate-induced potential productivity of vegetation in Northernwestern Sichuan Plateau, four tree ring samples from Aba Prefecture in Sichuan Province were used to establish the standard tree ring width chronology. The Miami model was used to reconstruct the climate-induced potential productivity of vegetation of 13 stations in Aba Prefecture from 1850 to 2010. It is found that the standardized chronologies have the potential to reflect past climate change and have good relationship with temperature determining productivity(MT)in Aba Prefecture. The MT in Aba Prefecture decreased from southeast to northwest, and first mode was consistent in the whole region, with the western and northern regions being large value zones. During the 100 years from 1850 to 1950, MT had no obvious change trend, but MT gradually decreased in the period from 1950 to 1980, and then increased rapidly until 2010. There were two mutations of MT in Aba Prefecture before and after 1967 and 1990, respectively, and MT had significant quasi-2-year cycle and 4-5-year cycle. These results show that it is an effective method to reconstruct climate-induced potential productivity of vegetation by using tree ring data. In the past 161 years, MT in Aba Prefecture had obvious spatial distribution differences and interannual and interdecadal fluctuations, especially since the 1980s, the increase rate and absolute value of MT had reached the maximum since 1850, which also provided evidence for global warming.