globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12846
论文题名:
Carbon stock and its responses to climate change in Central Asia
作者: Li C.; Zhang C.; Luo G.; Chen X.; Maisupova B.; Madaminov A.A.; Han Q.; Djenbaev B.M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期:5
起始页码: 1951
结束页码: 1967
语种: 英语
英文关键词: Arid ecosystem model ; Carbon stock ; Central Asia ; Climate change ; Dryland ; Temperate desert
Scopus关键词: carbon ; soil ; Asia ; carbon cycle ; chemistry ; climate change ; desert climate ; ecosystem ; physiology ; soil ; theoretical model ; Asia, Central ; Carbon ; Carbon Cycle ; Climate Change ; Desert Climate ; Ecosystem ; Models, Theoretical ; Soil
英文摘要: Central Asia has a land area of 5.6 × 106 km2 and contains 80-90% of the world's temperate deserts. Yet it is one of the least characterized areas in the estimation of the global carbon (C) stock/balance. This study assessed the sizes and spatiotemporal patterns of C pools in Central Asia using both inventory (based on 353 biomass and 284 soil samples) and process-based modeling approaches. The results showed that the C stock in Central Asia was 31.34-34.16 Pg in the top 1-m soil with another 10.42-11.43 Pg stored in deep soil (1-3 m) of the temperate deserts. They amounted to 18-24% of the global C stock in deserts and dry shrublands. The C stock was comparable to that of the neighboring regions in Eurasia or major drylands around the world (e.g. Australia). However, 90% of Central Asia C pool was stored in soil, and the fraction was much higher than in other regions. Compared to hot deserts of the world, the temperate deserts in Central Asia had relatively high soil organic carbon density. The C stock in Central Asia is under threat from dramatic climate change. During a decadal drought between 1998 and 2008, which was possibly related to protracted La Niña episodes, the dryland lost approximately 0.46 Pg C from 1979 to 2011. The largest C losses were found in northern Kazakhstan, where annual precipitation declined at a rate of 90 mm decade-1. The regional C dynamics were mainly determined by changes in the vegetation C pool, and the SOC pool was stable due to the balance between reduced plant-derived C influx and inhibited respiration. © 2015 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61832
Appears in Collections:影响、适应和脆弱性

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作者单位: State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang, China; University of Chinese Academy of Sciences, Beijing, China; CAS Research Center for Ecology and Environment of Central Asia, Urumqi, Xinjiang, China; Almaty Branch of Kazakh Scientific Research Institute of Forestry, Ministries of Agriculture, Almaty, Kazakhstan; Department for Ecology and Plants Resources, Institute of Botany, Plant Physiology and Genetic, Academy of Science Republic of Tajikistan, Dushanbe, Tajikistan; School of Remote Sensing, Nanjing University of Information Science and Technology, Nanjing, China; Biology and Soil Institute of National Academy of Sciences of the Kyrgyz Republic, Bishkek, Kyrgyzstan

Recommended Citation:
Li C.,Zhang C.,Luo G.,et al. Carbon stock and its responses to climate change in Central Asia[J]. Global Change Biology,2015-01-01,21(5)
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