Knowledge Management System Of Institute Of Botany,CAS
Shrub-encroachment induced alterations in input chemistry and soil microbial community affect topsoil organic carbon in an Inner Mongolian grassland | |
Zhou, Luhong1; Li, He; Shen, Haihua; Xu, Yunping2; Wang, Yinghui3,4; Xing, Aijun1; Fang, Jingyun | |
2017 | |
发表期刊 | BIOGEOCHEMISTRY |
ISSN | 0168-2563 |
卷号 | 136期号:3页码:311-324 |
摘要 | Shrub encroachment frequently occurs in arid and semi-arid grasslands worldwide and affects the regional carbon balance. Many previous studies have revealed the effects of shrub encroachment on bulk carbon content of grasslands, but molecular evidence is surprisingly lacking. In this study, we examined the chemical composition of plant tissues and soil organic carbon (SOC), and soil microbial communities to identify the effects of shrub (Caragana microphylla) encroachment on SOC storage in the top layer (0-10 cm) along a gradient of natural shrub cover in the grasslands of Inner Mongolia. We found that SOC in the shrub patches was derived mainly from leaves, whereas SOC in the grassy matrix was composed of a mixture of fresh root- and leaf-derived compounds. Compared with pure grassland, the SOC decreased by 29% in the shrub-encroached grasslands (SEGs), and this decrease was enhanced by increasing shrub cover. We also found that free lipids and lignin-derived phenols increased while the ratios of omega-C-18/aC(18) and suberin/cutin decreased with increasing shrub cover. In addition, the ratios of fungal to bacterial phospholipid fatty acids (PLFAs) and gram-negative to gram-positive bacterial PLFAs decreased with increasing shrub cover. These results indicate that the encroachment of nitrogen-rich legume shrubs can lead to carbon loss by altering the chemical composition of plant inputs as well as the soil microbial community in grassland ecosystems. |
关键词 | Biomarkers Coverage gradient Legume shrub Plant-soil feedback Shrub encroachment |
学科领域 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
DOI | 10.1088/1748-9326/aa5ba6 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | WOODY PLANT ENCROACHMENT ; NORTH-AMERICAN GRASSLANDS ; MATTER ; NITROGEN ; STABILITY ; DYNAMICS ; CUTIN ; DESERTIFICATION ; PERSISTENCE ; MANAGEMENT |
WOS记录号 | WOS:000395741500002 |
出版者 | SPRINGER |
文献子类 | Article |
出版地 | DORDRECHT |
EISSN | 1573-515X |
资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330012, 31470525] ; National Basic Research Program of China on Global ChangeNational Basic Research Program of China [2014CB954001] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2016M591282] |
作者邮箱 | shen.haihua@ibcas.ac.cn |
作品OA属性 | gold |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/22124 |
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.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China 4.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 5.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Luhong,Li, He,Shen, Haihua,et al. Shrub-encroachment induced alterations in input chemistry and soil microbial community affect topsoil organic carbon in an Inner Mongolian grassland[J]. BIOGEOCHEMISTRY,2017,136(3):311-324. |
APA | Zhou, Luhong.,Li, He.,Shen, Haihua.,Xu, Yunping.,Wang, Yinghui.,...&Fang, Jingyun.(2017).Shrub-encroachment induced alterations in input chemistry and soil microbial community affect topsoil organic carbon in an Inner Mongolian grassland.BIOGEOCHEMISTRY,136(3),311-324. |
MLA | Zhou, Luhong,et al."Shrub-encroachment induced alterations in input chemistry and soil microbial community affect topsoil organic carbon in an Inner Mongolian grassland".BIOGEOCHEMISTRY 136.3(2017):311-324. |
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