| Plant hydrological niches become narrow but stable as the complexity of interspecific competition increases | |
Wu, Junen1,2,4 ; Zeng, Huanhuan3; Zhao, Fan; Chen, Chunfeng4; Singh, Ashutosh Kumar; Jiang, Xiaojin; Yang, Bin; Liu, Wenjie4
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| 2022 | |
| Source Publication | AGRICULTURAL AND FOREST METEOROLOGY
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| ISSN | 0168-1923 |
| Volume | 320Issue:xPages:- |
| Abstract | Plant competition is a determinant of plant community formation, while resource partitioning is regarded as a critical factor for maintaining species coexistence under competition. However, how resource partitioning varies with species richness remains unclear; additionally, empirical studies of the dynamic processes involved in plant resource competition, especially that for belowground resources, are urgently needed. Here, we used the stable isotope approach to study the temporal dynamics of plant hydrological niches from species-poor to species-rich communities (including monocultural plantations, agroforestry systems and more diverse tropical rainforests) in a tropical area of southwestern China. We found that plant species in multispecies communities could be divided into two groups by comparison of their hydrological niches: deep-resource users and shallow-resource users. Resource partitioning was obvious between these two groups. However, resource partitioning was narrower within deep and shallow-resource users. In addition, with an increase in species richness, the general tendency of resource partitioning among all species became not just increasingly narrow but also uniform and stable. When we combined this information with data on belowground resource distribution and its correlations with plant resource use, we also found that the greater the species diversity and the smaller the resource use advantages among species, the easier it was for the species to achieve competitive reversals. This study confirmed the generality of the seasonal segregation of the plant hydrological niche and demonstrated that variations in both environmental resources and plant resource partitioning weaken the resource use advantages of species, representing an important mechanism that helps maintain the coexistence of competing species in a species-rich community. These findings therefore provide novel insights for understanding species combinations and plant belowground interactions in complex communities and will be beneficial for seeking solutions to some important ecological issues, such as reconstruction of tropical rainforests. |
| Keyword | Belowground resource Competition dynamics Plant water use Resource partitioning Stable isotope Tropical rainforest |
| Subject Area | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| DOI | 10.1016/j.agrformet.2022.108953 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000795681100005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/13066 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China 2.Yunnan Normal Univ, GIS Technol Res Ctr Resource & Environm Western Ch, Minist Educ, Kunming 650500, Yunnan, Peoples R China 3.Yunnan Normal Univ, Fac Geog, Yunnan Key Lab Plateau Geog Proc & Environm Change, Kunming 650500, Yunnan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China |
| Recommended Citation GB/T 7714 | Wu, Junen,Zeng, Huanhuan,Zhao, Fan,et al. Plant hydrological niches become narrow but stable as the complexity of interspecific competition increases[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,320(x):-. |
| APA | Wu, Junen.,Zeng, Huanhuan.,Zhao, Fan.,Chen, Chunfeng.,Singh, Ashutosh Kumar.,...&Liu, Wenjie.(2022).Plant hydrological niches become narrow but stable as the complexity of interspecific competition increases.AGRICULTURAL AND FOREST METEOROLOGY,320(x),-. |
| MLA | Wu, Junen,et al."Plant hydrological niches become narrow but stable as the complexity of interspecific competition increases".AGRICULTURAL AND FOREST METEOROLOGY 320.x(2022):-. |
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