A comprehensive meta-analysis of the impacts of intensified drought and elevated CO2 on forage growth
文献类型：期刊论文
| 作者 | Liu, Wanlu; Liu, Lulu; Yan, Rui; Gao, Jiangbo; Wu, Shaohong; Liu, Yanhua |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 327 |
| ISSN号 | 0301-4797 |
| 关键词 | Forage growth-related variables Linear mixed-effects model Drought stress ElevatedCO2 concentration Meta-analysis |
| DOI | 10.1016/j.jenvman.2022.116885 |
| 文献子类 | J |
| 英文摘要 | Forage crops are used worldwide as key feed sources for dairy systems. However, their productivity and quality are limited due to intensified drought events, elevated carbon dioxide (CO2), and their interaction with climate change, with consequences for the security of animal husbandry and the agricultural economy. Although studies have quantified the impacts of such stresses on forage growth, these impacts have been less systematically investigated in a global context due to differences among various forage groups, regional microclimates, and environmental factors. Herein we employed nine forage growth-related variables involving three perspectives, i. e., photosynthetic parameters, production, and quality, from research articles published between 1990 and 2021 via a meta-analysis. A linear mixed-effect model was then used to explore the quantitative relationship between these factors in a restricted dataset. Decreasing trends in all four photosynthetic parameters were detected across different eco-geographical regions with increasing drought stress. The maximum decrease in DMY occurred in the Mediterranean, with 52.8% under drought conditions. Globally, eCO2 significantly increased photosynthetic rate (Pn) and instantaneous water use efficiency (WUEi) by 40.8% and 62.1%, respectively, which also had positive effects on forage dry matter yield (DMY) (+25.1%), especially for forage in Northern Europe. However, this stress would significantly decrease forage quality by decreasing crude protein (CP) (-19.7%) and nitrogen content (N content) (-13.5%). These negative impacts would be aggravated under the co-occurrence of drought and eCO2, including a significant increase in WUEi (+111.1%) and a decrease in DMY (-12.3%). Gramineae showed a more sensitive response to drought stress in photosynthetic parameters and DMY than Leguminosae, but the latter exhibited a better response in photosynthetic parameters and production under eCO2. Our analysis provides a consensus concerning how the growth parameters of forage have changed under environmental stresses. |
| WOS关键词 | CARBON-DIOXIDE CONCENTRATION ; CLIMATE-CHANGE ; SEA-LEVEL ; PRECIPITATION VARIABILITY ; WATER-USE ; YIELD ; RESPONSES ; NITROGEN ; QUALITY ; TEMPERATURE |
| WOS研究方向 | Environmental Sciences & Ecology |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000900253400002 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188585]  |
| 专题 | 禹城站农业生态系统研究中心_外文论文 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Institute of Geographic Sciences & Natural Resources Research, CAS 3.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Liu, Wanlu,Liu, Lulu,Yan, Rui,et al. A comprehensive meta-analysis of the impacts of intensified drought and elevated CO2 on forage growth[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2023,327. |
| APA | Liu, Wanlu,Liu, Lulu,Yan, Rui,Gao, Jiangbo,Wu, Shaohong,&Liu, Yanhua.(2023).A comprehensive meta-analysis of the impacts of intensified drought and elevated CO2 on forage growth.JOURNAL OF ENVIRONMENTAL MANAGEMENT,327. |
| MLA | Liu, Wanlu,et al."A comprehensive meta-analysis of the impacts of intensified drought and elevated CO2 on forage growth".JOURNAL OF ENVIRONMENTAL MANAGEMENT 327(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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