Effects of nutrient addition on degraded alpine grasslands of the Qinghai-Tibetan Plateau: A meta-analysis
文献类型：期刊论文
| 作者 | Wang, Dangjun2,3,4,5; Zhou, Huakun3; Yao, Buqing3; Wang, Wenying6; Dong, Shikui1; Shang, Zhanhuan7; She, Yandi3,5; Ma, Li3,5; Huang, Xiaotao3; Zhang, Zhonghua3,5 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 301页码:12 |
| 关键词 | Qinghai-Tibetan Plateau Grassland degradation Soil quality Biodiversity Fertilisation Meta-analysis |
| ISSN号 | 0167-8809 |
| DOI | 10.1016/j.agee.2020.106970 |
| 英文摘要 | Climate warming and human disturbance are supposed to have severely affected the alpine grasslands on the Qinghai-Tibetan Plateau (QTP), a region where the extremely harsh and fragile ecological environment has attracted great attention because of its sensitivity to global change. However, there is still no unified understanding of the degree and magnitude of grassland degradation and the effectiveness of nutrient addition in this vast landscape, since most previous studies have focused on short-term observations at a single site. Here, we conducted a meta-analysis of 145 published studies on degraded alpine grassland along with 90 published studies, which concerning nutrient addition (nitrogen [N], phosphorus [P], and combined N and P [NP]) to quantitatively assess the responses of plant and soil characteristics to land degradation and restoration. Our results revealed that the response ratio (RR) of above-ground biomass (AGB), below-ground biomass (BGB), soil organic carbon (SOC), and soil total N (TN) decreased significantly (- 47.23 %, -43.45 %, -32.35 %, and - 37.97 %, respectively) in degraded grassland compared with non-degraded grassland. The RR of AGB was correlated with mean annual precipitation (MAP), while the RR of BGB was correlated with the interaction of MAP and mean annual temperature (MAT). Severely degraded grassland required additional nutrients to aid recovery. NP addition to severely degraded sites increased plant AGB (+32.44 %), TN (+ 10.99 %), soil total P (+ 32.25 %), and soil moisture (+ 9.21 %), but significantly decreased species richness (-45.46 %), diversity (- 30.40 % for Shannon- Wiener index) and soil pH (- 3.91 %). N addition increased the RR of AGB and grass biomass significantly by 28.77 % and 36.49 %, but had no significant effect on sedge and forb biomass. MAP influenced the RR of AGB, TN, TP under NP addition, the RR of BGB and the AGB of different function groups were significantly affected by MAT. We evidenced that the QTP has endured severe vegetation and soil degradation, which cannot be completely mitigated by supplementary fertilisation. Fertilisation could yield positive effects on plant performance and soil quality, but negative effects on biodiversity. Climate warming and associated precipitation change may regulate the effects of fertiliser on plant biomass and soil nutrients. |
| 资助项目 | National Key Research and Development Program of China[2016YFC0501901] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0302] ; National Natural Science Foundation of China[31672475] ; Natural Science Foundation of Qinghai Province of China[2019-ZJ-908] |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000553393400001 |
| 出版者 | ELSEVIER |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/15505]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Zhou, Huakun |
| 作者单位 | 1.Beijing Forestry Univ, Sch Grassland Sci, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Cold Reg Restorat Ecol, Xining 810008, Peoples R China 4.Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Wuhan 430074, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Qinghai Normal Univ, Coll Life Sci, Xining 810008, Peoples R China 7.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China 8.Qinghai Forestry & Grassland Bur, Xining 810000, Peoples R China 9.Univ Montpellier, INRAE, CNRS, CIRAD,IRD,AMAP, Montpellier, France |
| 推荐引用方式 GB/T 7714 | Wang, Dangjun,Zhou, Huakun,Yao, Buqing,et al. Effects of nutrient addition on degraded alpine grasslands of the Qinghai-Tibetan Plateau: A meta-analysis[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2020,301:12. |
| APA | Wang, Dangjun.,Zhou, Huakun.,Yao, Buqing.,Wang, Wenying.,Dong, Shikui.,...&Mao, Zhun.(2020).Effects of nutrient addition on degraded alpine grasslands of the Qinghai-Tibetan Plateau: A meta-analysis.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,301,12. |
| MLA | Wang, Dangjun,et al."Effects of nutrient addition on degraded alpine grasslands of the Qinghai-Tibetan Plateau: A meta-analysis".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 301(2020):12. |
入库方式： OAI收割
来源：武汉植物园
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