Significant soil acidification caused by grazing exclusion across China's grassland areas
文献类型：期刊论文
| 作者 | Hong Jiangtao2,3 ; Xu Xin2,3,4; Pang Bo2,3; Ma Xingxing1; Wang Xiaodan2,3
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| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2020 |
| 页码 | DOI: 10.1002/ldr.3722 |
| 关键词 | fencing grassland management soil acidity soil alkalinity soil pH |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.3722 |
| 产权排序 | 1 |
| 文献子类 | Article; Early Access |
| 英文摘要 | Soil pH is strongly associated with soil biogeochemical cycles and biodiversity in terrestrial ecosystems. Grazing exclusion (GE) has been widely adopted as an effective practice to restore degraded grasslands. However, the effect of GE on soil pH is still poorly understood and remains inconclusive. We synthesized data for 63 sites from the peer-reviewed literature and 43 additional field sites and investigated the differences in soil pH following grazing exclusion across China's grasslands. The mean pH across all samples decreased by 0.13 units with grazing exclusion (mean pH 8.15 and 8.02 for the grazed and grazing exclusion groups, respectively, p < 0.001). The pH of the surface soil (0-20 cm) showed the greatest rates of decrease in grazing exclusion grasslands, whereas the pH of the deep soil layers (20-100 cm) showed a limited response to grazing exclusion. In general, the largest rate of decrease in soil pH occurred after medium-term periods (5-15 years) of grazing exclusion, whereas a smaller rate of change was found over short- (<= 5 years) and long-term periods (>= 15 years) of grazing exclusion. Of the environmental factors examined, the climatic conditions, accumulation of biomass and the soil carbon and nitrogen dynamics were important factors influencing soil pH following grazing exclusion. Our results indicate that grazing exclusion causes significant soil acidification, especially in surface soils and humid areas. Our results provide an important reference for the future management of China's grasslands. |
| 电子版国际标准刊号 | 1099-145X |
| 语种 | 英语 |
| WOS记录号 | WOS:000568733300001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46290]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Wang Xiaodan |
| 作者单位 | 1.Shanxi Normal Univ, Linfen, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Peoples R China; 3.Xainza Alpine Steppe & Wetland Ecosyst Observat S, Xainza, Peoples R China; 4.Univ Chinese Acad Sci, Beijing, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Hong Jiangtao,Xu Xin,Pang Bo,et al. Significant soil acidification caused by grazing exclusion across China's grassland areas[J]. LAND DEGRADATION & DEVELOPMENT,2020:DOI: 10.1002/ldr.3722. |
| APA | Hong Jiangtao,Xu Xin,Pang Bo,Ma Xingxing,&Wang Xiaodan.(2020).Significant soil acidification caused by grazing exclusion across China's grassland areas.LAND DEGRADATION & DEVELOPMENT,DOI: 10.1002/ldr.3722. |
| MLA | Hong Jiangtao,et al."Significant soil acidification caused by grazing exclusion across China's grassland areas".LAND DEGRADATION & DEVELOPMENT (2020):DOI: 10.1002/ldr.3722. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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