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Variable response of inorganic carbon and consistent increase of organic carbon as a consequence of afforestation in areas with semiarid soils

文献类型：期刊论文

作者Jia, Xiaoxu1,2,6; Wang, Xiang1,4; Hou, Lingcao1,5; Wei, Xiaorong1,3,6; Zhang, Yan1,5; Shao, Ming'an1,2,3; Zhao, Xiaoning7
刊名LAND DEGRADATION & DEVELOPMENT
出版日期2019-07-15
卷号30期号:11页码:1345-1356
ISSN号1085-3278
关键词afforestation aggregate size fraction inorganic carbon organic carbon semiarid soils
DOI10.1002/ldr.3320
通讯作者Wei, Xiaorong(xrwei78@163.com)
英文摘要Soil inorganic carbon (SIC) is the most common form of carbon in arid and semiarid regions, where afforestation is used to combat soil degradation. However, response of SIC to afforestation has been studied rarely, which hinders any prediction about soil carbon dynamics. To determine the response of SIC and soil organic carbon (SOC) to afforestation in semiarid soils and whether such responses vary with soil aggregates, soil texture, and climatic conditions, we measured SIC and SOC in bulk soils and aggregate fractions under paired afforested lands and farmlands at five sites across the Loess Plateau. The relationship of these responses to soils and climatic variables was analyzed. Afforestation increased SOC at all sites, with accumulation rates of 0.21, 0.23, 0.34, and 0.09 g kg(-1) yr(-1) in bulk soils, macroaggregates (>0.25 mm), microaggregates (0.25-0.053 mm), and silt + clay fraction, respectively, when averaged across sites and soil depths. However, the response of SIC to afforestation varied with site, with increased SIC in drier sites and decreased SIC in wetter sites. Change in SIC was negatively correlated with change in SOC either across or within bulk soils and aggregate fractions. The SIC decreased and SOC increased with increasing soil clay content, precipitation, temperature, and site aridity index. These results indicated consistent increase in SOC but variable response of SIC to afforestation among sites in the Loess Plateau. Such variable response of SIC should be incorporated into carbon cycle models to reduce uncertainties when predicting sequestration dynamics of soil carbon.
WOS关键词LOESS PLATEAU ; GRASSLAND RESTORATION ; VERTICAL-DISTRIBUTION ; LAND USES ; NITROGEN ; CHRONOSEQUENCE ; MATTER ; STORAGE ; ACCUMULATION ; SUCCESSION
资助项目National Natural Science Foundation of China[41571130082] ; National Natural Science Foundation of China[41571296] ; National Natural Science Foundation of China[41622105] ; Chinese Academy of Sciences[QYZDB-SSW-DQC039] ; Northwest A and F University[2452017028] ; Youth Innovation Team of Shaanxi Universities[2017076] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017076] ; Special-Funds for Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-Q5 A314021402-1806]
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
出版者WILEY
WOS记录号WOS:000472123300007
资助机构National Natural Science Foundation of China ; Chinese Academy of Sciences ; Northwest A and F University ; Youth Innovation Team of Shaanxi Universities ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Special-Funds for Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
源URL[http://ir.igsnrr.ac.cn/handle/311030/58835]  
专题中国科学院地理科学与资源研究所
通讯作者Wei, Xiaorong
作者单位1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
4.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA
5.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
6.Univ Chinese Acad Sci, Coll Recourses & Environm, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, 818 South Beijing Rd, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Jia, Xiaoxu,Wang, Xiang,Hou, Lingcao,et al. Variable response of inorganic carbon and consistent increase of organic carbon as a consequence of afforestation in areas with semiarid soils[J]. LAND DEGRADATION & DEVELOPMENT,2019,30(11):1345-1356.
APA Jia, Xiaoxu.,Wang, Xiang.,Hou, Lingcao.,Wei, Xiaorong.,Zhang, Yan.,...&Zhao, Xiaoning.(2019).Variable response of inorganic carbon and consistent increase of organic carbon as a consequence of afforestation in areas with semiarid soils.LAND DEGRADATION & DEVELOPMENT,30(11),1345-1356.
MLA Jia, Xiaoxu,et al."Variable response of inorganic carbon and consistent increase of organic carbon as a consequence of afforestation in areas with semiarid soils".LAND DEGRADATION & DEVELOPMENT 30.11(2019):1345-1356.

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来源：地理科学与资源研究所

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