干旱区生态环境知识资源中心(Arid): Variable response of inorganic carbon and consistent increase of organic carbon as a consequence of afforestation in areas with semiarid soils

Arid

DOI	10.1002/ldr.3320
	Variable response of inorganic carbon and consistent increase of organic carbon as a consequence of afforestation in areas with semiarid soils
	Jia, Xiaoxu 1,2,6; Wang, Xiang 1,4; Hou, Lingcao 1,5; Wei, Xiaorong 1,3,6; Zhang, Yan 1,5; Shao, Ming’an 1,2,3; Zhao, Xiaoning 7
通讯作者	Wei, Xiaorong
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2019
卷号	30 期号:11 页码:1345-1356
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.
英文关键词	afforestation aggregate size fraction inorganic carbon organic carbon semiarid soils
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000472123300007
WOS关键词	LOESS PLATEAU ; GRASSLAND RESTORATION ; VERTICAL-DISTRIBUTION ; LAND USES ; NITROGEN ; CHRONOSEQUENCE ; MATTER ; STORAGE ; ACCUMULATION ; SUCCESSION
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	中国科学院新疆生态与地理研究所 ; 中国科学院地理科学与资源研究所 ; 西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217466
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]. 中国科学院新疆生态与地理研究所, 中国科学院地理科学与资源研究所, 西北农林科技大学,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.