Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient
文献类型：期刊论文
| 作者 | Jaman, Md Shahariar2,3; Wu, Honghui2; Yu, Qiang5; Tan, Qiqi5; Zhang, Yunlong5; Dam, Quoc Khanh2; Muraina, Taofeek O.5,6; Xu, Chong5; Jing, Minghui5; Jia, Xiaotong5 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2022-02-19 |
| 页码 | 14 |
| 关键词 | Biomass carbon Climate change Extreme drought Grassland Precipitation manipulation experiment |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-021-05258-4 |
| 通讯作者 | Wu, Honghui(wuhonghui@caas.cn) |
| 英文摘要 | Background and aim As global climate change intensifies, the frequency and duration of extreme droughts are predicted to increase, resulting in extended periods of reduced soil water availability across ecosystems. The allocation of carbon (C) to above- and below-ground plant biomass is a fundamental ecosystem property that varies spatially and temporally with water availability. Yet, how extreme drought affects biomass pools along an aridity gradient remains poorly understood. Methods To elucidate the effects of extreme drought on above- and belowground carbon storage, we conducted a 3-year (2015-2017) precipitation manipulation experiment (66% reduction in growing season precipitation) to simulate a multi-year extreme drought across six grasslands spanning an aridity gradient from desert steppe, typical steppe, and meadow steppe in northern China. Results Extreme drought significantly decreased aboveground biomass carbon (AGBC) and litter carbon (LC), but did not affect belowground biomass carbon (BGBC) across the six grasslands. As a result, grassland total carbon (TC) in plant biomass declined overall by similar to 10%. Across the aridity gradient, drought-induced reductions in AGBC and LC increased with increasing aridity (i.e., reductions were greater in desert steppe than meadow steppe). In contrast, extreme drought increased BGBC in the drier grass-lands (desert steppe and typical steppe), but decreased BGBC in the more mesic meadow steppe sites. Conclusion We found that extreme drought elicited contrasting responses of plant above- and below-ground carbon across an aridity gradient, and that regionally extreme drought will result in a loss of total plant carbon in grasslands dominated by above-ground plant carbon pools. |
| WOS关键词 | ECOSYSTEM CARBON ; CLIMATE EXTREMES ; SUMMER DROUGHT ; PRECIPITATION GRADIENT ; PRIMARY PRODUCTIVITY ; ABOVEGROUND BIOMASS ; REGIONAL PATTERNS ; NITROGEN DYNAMICS ; USE EFFICIENCY ; ABSCISIC-ACID |
| 资助项目 | National Key R&D Program of China[2017YFA0604802] ; National Key R&D Program of China[2019YFE0117000] ; National Natural Science Foundation of China[31971533] ; National Natural Science Foundation of China[41320104002] ; Konza Prairie Long-term Ecological Research Program ; Drought-Net Research Coordination Network - US National Science Foundation[DEB-1354732] ; Macrosystems Biology/Emerging Frontiers Programs[EF-1137342] ; Macrosystems Biology/Emerging Frontiers Programs[EF-1137378] ; Macrosystems Biology/Emerging Frontiers Programs[EF-1137363] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000758312800003 |
| 出版者 | SPRINGER |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Konza Prairie Long-term Ecological Research Program ; Drought-Net Research Coordination Network - US National Science Foundation ; Macrosystems Biology/Emerging Frontiers Programs |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/171260]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wu, Honghui |
| 作者单位 | 1.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Crop Nutr & Fertilizat, Beijing 100081, Peoples R China 3.Sher E Bangla Agr Univ, Dept Agroforestry & Environm Sci, Dhaka 1207, Bangladesh 4.No Arizona Univ, Ctr Ecosyst Sci & Soc ECOSS, Dept Biol Sci, Flagstaff, AZ 86011 USA 5.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China 6.Oyo State Coll Agr & Technol, Dept Anim Hlth & Prod, PMB 10, Igbo Ora, Oyo State, Nigeria 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 8.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110164, Peoples R China 9.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA |
| 推荐引用方式 GB/T 7714 | Jaman, Md Shahariar,Wu, Honghui,Yu, Qiang,et al. Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient[J]. PLANT AND SOIL,2022:14. |
| APA | Jaman, Md Shahariar.,Wu, Honghui.,Yu, Qiang.,Tan, Qiqi.,Zhang, Yunlong.,...&Luo, Yiqi.(2022).Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient.PLANT AND SOIL,14. |
| MLA | Jaman, Md Shahariar,et al."Contrasting responses of plant above and belowground biomass carbon pools to extreme drought in six grasslands spanning an aridity gradient".PLANT AND SOIL (2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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