Productivity and Quality of Alpine Grassland Vary With Soil Water Availability Under Experimental Warming
文献类型：期刊论文
| 作者 | Li, Chengyang1,2; Peng, Fei1,3,4; Xue, Xian1; You, Quangang1; Lai, Chimin1,5; Zhang, Wenjuan1,2; Cheng, Yunxiang6 |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2018-12-14 |
| 卷号 | 9页码:13 |
| 关键词 | climate warming community composition importance value biomass forage quality alpine meadow desertification |
| ISSN号 | 1664-462X |
| DOI | 10.3389/fpls.2018.01790 |
| 通讯作者 | Peng, Fei(pengfei@lzb.ac.cn) |
| 英文摘要 | The plant productivity of alpine meadow is predicted to generally increase under a warming climate, but it remains unclear whether the positive response rates will vary with soil water availability. Without consideration of the response of community composition and plant quality, livestock grazing under the current stocking rate might still lead to grassland degradation, even in meadows with high plant biomass. We have conducted a warming experiment from 2010 to 2017 to examine the interactive effects of warming and soil water availability on plant growth and forage quality at individual and functional group levels in an alpine meadow located in the permafrost region of the Qinghai-Tibetan Plateau. Warming-induced changes in community composition, biomass, and forage quality varied with soil water availability. Under dry conditions, experimental warming reduced the relative importance of grasses and the aboveground biomass by 32.37 g m(-2) but increased the importance value of forbs. It also increased the crude fat by 0.68% and the crude protein by 3.19% at the end of summer but decreased the acid detergent fiber by 5.59% at the end of spring. The increase in crude fat and protein and the decrease in acid detergent fiber, but the decrease in aboveground biomass and increase the importance value of forbs, which may imply a deterioration of the grassland. Under wet conditions, warming increased aboveground biomass by 29.49 g m(-2) at the end of spring and reduced acid detergent fiber by 8.09% at the end of summer. The importance value of grasses and forbs positively correlated with the acid detergent fiber and crude protein, respectively. Our results suggest that precipitation changes will determine whether climate warming will benefit rangelands on the Qinghai- Tibetan Plateau, with drier conditions suppressing grassland productivity, but wetter conditions increasing production while preserving forage quality. |
| 收录类别 | SCI |
| WOS关键词 | QINGHAI-TIBET PLATEAU ; CLIMATE-CHANGE ; PLANT COMMUNITY ; SPECIES RICHNESS ; CARBON ; RESPONSES ; NITROGEN ; BIOMASS ; ECOSYSTEM ; MEADOW |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000453343800001 |
| 出版者 | FRONTIERS MEDIA SA |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558237 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Peng, Fei |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Int Platform Dry Res & Educ, Tottori, Japan 4.Tottori Univ, Arid Land Res Ctr, Tottori, Japan 5.Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou, Fujian, Peoples R China 6.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Key Lab Grassland Livestock Ind Innovat,Minist Ag, Lanzhou, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chengyang,Peng, Fei,Xue, Xian,et al. Productivity and Quality of Alpine Grassland Vary With Soil Water Availability Under Experimental Warming[J]. FRONTIERS IN PLANT SCIENCE,2018,9:13. |
| APA | Li, Chengyang.,Peng, Fei.,Xue, Xian.,You, Quangang.,Lai, Chimin.,...&Cheng, Yunxiang.(2018).Productivity and Quality of Alpine Grassland Vary With Soil Water Availability Under Experimental Warming.FRONTIERS IN PLANT SCIENCE,9,13. |
| MLA | Li, Chengyang,et al."Productivity and Quality of Alpine Grassland Vary With Soil Water Availability Under Experimental Warming".FRONTIERS IN PLANT SCIENCE 9(2018):13. |
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来源：寒区旱区环境与工程研究所
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