Shifts in characteristics of the plant-soil system associated with flooding and revegetation in the riparian zone of Three Gorges Reservoir, China
文献类型：期刊论文
| 作者 | Ye, Chen1,2; Butler, Orpheus M.3,4; Chen, Chengrong3,4; Liu, Wenzhi1,2; Du, Ming1,2; Zhang, Quanfa1,2 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 361页码:11 |
| ISSN号 | 0016-7061 |
| 关键词 | Biogeochemistry Microbial community Recovery Revegetation Flooding regime |
| DOI | 10.1016/j.geoderma.2019.114015 |
| 英文摘要 | The operation of the Three Gorges Reservoir (TGR), the largest hydropower dam in the world, has triggered a dramatic shift in the flooding regimes of sites upstream of the reservoir. Little is known about how disrupted flooding regimes and consequent management approaches might affect the ecological and biogeochemical characteristics of riparian ecosystems. In this study, we evaluated the effects of disruptions to natural flooding regime on basic soil properties, soil nutrient and heavy metal levels, and key characteristics of riparian plant and soil microbial communities. To do this, we used an elevational gradient that encompassed four flooding duration zones (0 (i.e., control), 169, 237, 286 days of flooding per year on average). The disrupted flooding regimes were associated with levels of soil total N and P that were on average 17% and 24% lower, respectively, than those in the non-flooded areas. On the other hand, the concentrations of heavy metals (Hg, Pb, Cu, Zn and Mn) were higher in flood-affected areas than in the non-flooded areas. Increased flooding frequency was also associated with lower plant diversity and species richness relative to non-flooded areas. Thus, disruption of the natural flooding regime had strong and often negative consequences for the ecological and biogeochemical properties of the riparian ecosystems in our study. There was some evidence that riparian plant communities were able to partially recover from prior flooding during a single growing season, even after nine years of repeated flooding, and these recovery trajectories were associated with shifts in soil chemical properties during the same period. However, revegetation efforts had few effects on ecosystem properties or their recovery trajectories following flooding events, suggesting that natural regeneration could be a useful option for the management of these sites. We conclude that the unnatural flooding regimes associated with large scale reservoir development are likely to have profound impacts on the structure and functioning of riparian ecosystems, and these will pose a considerable challenge for environmental management and biodiversity conservation. |
| 资助项目 | National Natural Science Foundation of China[31570521] ; National Natural Science Foundation of China[31300441] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019334] ; Executive of the State Council Three Gorges Construction Committee[SX2017-022] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000510804700025 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/14992]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Zhang, Quanfa |
| 作者单位 | 1.Chinese Acad Sci, Core Bot Gardens, Ctr Plant Ecol, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China 3.Griffith Univ, Australian Rivers Inst, Nathan, Qld 4111, Australia 4.Griffith Univ, Griffith Sch Environm & Sci, Nathan, Qld 4111, Australia |
| 推荐引用方式 GB/T 7714 | Ye, Chen,Butler, Orpheus M.,Chen, Chengrong,et al. Shifts in characteristics of the plant-soil system associated with flooding and revegetation in the riparian zone of Three Gorges Reservoir, China[J]. GEODERMA,2020,361:11. |
| APA | Ye, Chen,Butler, Orpheus M.,Chen, Chengrong,Liu, Wenzhi,Du, Ming,&Zhang, Quanfa.(2020).Shifts in characteristics of the plant-soil system associated with flooding and revegetation in the riparian zone of Three Gorges Reservoir, China.GEODERMA,361,11. |
| MLA | Ye, Chen,et al."Shifts in characteristics of the plant-soil system associated with flooding and revegetation in the riparian zone of Three Gorges Reservoir, China".GEODERMA 361(2020):11. |
入库方式： OAI收割
来源：武汉植物园
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