Differential Responses of Soil Microbial Community to Four-Decade Long Grazing and Cultivation in a Semi-Arid Grassland
文献类型：期刊论文
| 作者 | He, Yating1,2,3; Xu, Minggang3; Qi, Yuchun1 ; Dong, Yunshe1; He, Xinhua3; Li, Jianwei3; Liu, Xinchao1; Sun, Liangjie1
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| 刊名 | SUSTAINABILITY
 |
| 出版日期 | 2017 |
| 卷号 | 9期号:1页码:14 |
| 关键词 | grazing cultivation grassland microbial biomass carbon extracellular enzyme activity |
| ISSN号 | 2071-1050 |
| DOI | 10.3390/su9010128 |
| 通讯作者 | Xu, Minggang(xuminggang@caas.cn) ; Dong, Yunshe(dongys@igsnrr.ac.cn) |
| 英文摘要 | Grazing and cultivation are two important management practices worldwide that can cause significant soil organic carbon (SOC) losses. However, it remains elusive how soil microbes have responded to soil carbon changes under these two practices. Based on a four-decade long field experiment, this study investigated the effects of grazing and cultivation on SOC stocks and microbial properties in the semi-arid grasslands of China. We hypothesize that grazing and cultivation would deplete SOC and depress microbial activities under both practices. However, our hypotheses were only partially supported. As compared with the adjacent indigenous grasslands, SOC and microbial biomass carbon (MBC) were decreased by 20% or more under grazing and cultivation, which is consistent with the reduction of fungi abundance by 40% and 71%, respectively. The abundance of bacteria and actinomycetes was decreased under grazing but increased under cultivation, which likely enhanced microbial diversity in cultivation. Invertase activity decreased under the two treatments, while urease activity increased under grazing. These results suggest that nitrogen fertilizer input during cultivation may preferentially favor bacterial growth, in spite of SOC loss, due to rapid decomposition, while overgrazing may deteriorate the nitrogen supply to belowground microbes, thus stimulating the microbial production of nitrogen acquisition enzymes. This decade-long study demonstrated differential soil microbial responses under grazing and cultivation and has important applications for better management practices in the grassland ecosystem. |
| WOS关键词 | LAND-USE CHANGE ; ORGANIC-CARBON ; NORTHERN CHINA ; PHYSICOCHEMICAL PROPERTIES ; ECOLOGICAL INDICATORS ; FUNCTIONAL DIVERSITY ; SANDY GRASSLAND ; GLOBAL ANALYSIS ; INNER-MONGOLIA ; NITROGEN |
| 资助项目 | National Natural Science Foundation of China[41330528] ; National Natural Science Foundation of China[41373084] ; National Natural Science Foundation of China[41573131] ; Special Fund for Agro-scientific Research in the Public Interest[201203012] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000394842700126 |
| 出版者 | MDPI AG |
| 资助机构 | National Natural Science Foundation of China ; Special Fund for Agro-scientific Research in the Public Interest |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/64865]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Minggang; Dong, Yunshe |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Chinese Acad Forestry, Res Inst Forestry Policy & Informat, Beijing 100091, Peoples R China 3.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Crop Nutr & Fertilizat, Minist Agr, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Yating,Xu, Minggang,Qi, Yuchun,et al. Differential Responses of Soil Microbial Community to Four-Decade Long Grazing and Cultivation in a Semi-Arid Grassland[J]. SUSTAINABILITY,2017,9(1):14. |
| APA | He, Yating.,Xu, Minggang.,Qi, Yuchun.,Dong, Yunshe.,He, Xinhua.,...&Sun, Liangjie.(2017).Differential Responses of Soil Microbial Community to Four-Decade Long Grazing and Cultivation in a Semi-Arid Grassland.SUSTAINABILITY,9(1),14. |
| MLA | He, Yating,et al."Differential Responses of Soil Microbial Community to Four-Decade Long Grazing and Cultivation in a Semi-Arid Grassland".SUSTAINABILITY 9.1(2017):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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