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Effects of shrub encroachment on soil organic carbon in global grasslands

文献类型：期刊论文

作者Li, He1; Shen, Haihua; Chen, Leiyi; Liu, Taoyu1; Hu, Huifeng; Zhao, Xia; Zhou, Luhong1; Zhang, Pujin2; Fang, Jingyun4,5
刊名SCIENTIFIC REPORTS
出版日期2016
卷号6
ISSN号2045-2322
DOI10.1038/srep28974
文献子类Article
英文摘要This study aimed to evaluate the effect of shrub encroachment on soil organic carbon (SOC) content at broad scales and its controls. We conducted a meta-analysis using paired control data of shrubencroached grassland (SEG) vs. non-SEG collected from 142 studies worldwide. SOC contents (0-50 cm) were altered by shrub encroachment, with changes ranging from -50% to + 300%, with an effect size of 0.15 (p < 0.01). The SOC contents increased in semi-arid and humid regions, and showed a greater rate of increase in grassland encroached by leguminous shrubs than by non-legumes. The SOC content decreased in silty and clay soils but increased in sand, sandy loam and sandy clay loam. The SOC content increment was significantly positively correlated with precipitation and temperature as well as with soil bulk density but significantly negatively correlated with soil total nitrogen. We conclude the main effects of shrub encroachment would be to increase topsoil organic carbon content. As structural equation model revealed, soils properties seem to be the primary factors responsible for the extent of the changes, coarse textured soils having a greater capacity than fine textured soils to increase the SOC content. This increased effect appears to be secondarily enhanced by climate and plant elements.
学科主题Multidisciplinary Sciences
出版地LONDON
WOS关键词WOODY PLANT ENCROACHMENT ; ECOSYSTEM CARBON ; RESPONSE RATIOS ; N STORAGE ; LAND-USE ; NITROGEN ; DYNAMICS ; METAANALYSIS ; INVASION ; SEQUESTRATION
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000379237100001
出版者NATURE PUBLISHING GROUP
资助机构National Basic Research Program of China on Global ChangeNational Basic Research Program of China [2014CB954001] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330012, 31470525] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA05050300]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/25164]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
4.Peking Univ, Coll Urban & Environm, Dept Ecol, Beijing 100871, Peoples R China
5.Chinese Acad Sci, Inner Mongolia Prataculture Res Ctr, Hohhot 010031, Peoples R China
推荐引用方式
GB/T 7714		 Li, He,Shen, Haihua,Chen, Leiyi,et al. Effects of shrub encroachment on soil organic carbon in global grasslands[J]. SCIENTIFIC REPORTS,2016,6.
APA Li, He.,Shen, Haihua.,Chen, Leiyi.,Liu, Taoyu.,Hu, Huifeng.,...&Fang, Jingyun.(2016).Effects of shrub encroachment on soil organic carbon in global grasslands.SCIENTIFIC REPORTS,6.
MLA Li, He,et al."Effects of shrub encroachment on soil organic carbon in global grasslands".SCIENTIFIC REPORTS 6(2016).

入库方式： OAI收割

来源：植物研究所

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