Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest
文献类型：期刊论文
| 作者 | Chaturvedi, R. K.; Tripathi, Anshuman1; Raghubanshi, A. S.; Singh, J. S. |
| 刊名 | FOREST ECOLOGY AND MANAGEMENT
 |
| 出版日期 | 2021 |
| 卷号 | 482期号:-页码:- |
| ISSN号 | 0378-1127 |
| 关键词 | Tropical dry forest Soil moisture content Functional guilds Drought avoidance Drought resistance Drought tolerance |
| DOI | 10.1016/j.foreco.2020.118740 |
| 英文摘要 | This study evaluates drought survival mechanisms of tropical dry forest (TDF) trees based on their functional traits (FTs). We addressed the following questions: (i) What are the dominant functional guilds (FGs) of tree species across a soil water availability gradient in TDF? (ii) What are the important FTs influencing tree species assemblage in different FGs? (iii) What is the functional composition of different FGs in the study sites, and how are they influencing biomass accumulation capacity (BAC) across the soil water availability gradient? We selected 12 FTs associated with plant water use strategies, viz., canopy cover intensity (CC), wood specific gravity (WSG), saturated stem water content (QWsat), leaf size or leaf area (LA), specific leaf area (SLA), relative water content (RWC), leaf dry matter content (LDMC), leaf nitrogen content (LNC), leaf phosphorus content (LPC), maximum saturated stomatal conductance (Gs(max)), maximum saturated photosynthetic rate (A(max)), and intrinsic water use efficiency (WUEi). By using these FTs, we classified 47 tree species by HCPC (hierarchical clustering on principal components) into three FGs, viz, drought avoiding (DAFG), drought resistant (DRFG), and drought tolerant (DTFG). For species grouping, QWsat was the most significant for DAFG, impacts of A(max), LPC, Gs(max) and LNC were significant for DRFG, while LDMC and CC were significant for DTFG. Across the five forest fragments, along a soil moisture content (SMC) gradient, the three FGs exhibited significant differences in species richness, stem density, aboveground biomass, and biomass accumulation capacity (BAC). We observed increasing dominance of DAFG towards drier sites, while the abundance of DRFG and DTFG was higher towards moister sites. Among the three FGs, DTFG showed highest biomass and BAC in our study region. Strategies of DAFG were more associated with savanna habitats, while DRFG and DTFG exhibited strategies important for TDFs. Our findings could help forest managers in restoration and conservation of TDFs. |
| 学科主题 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000617951300008 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/12144]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 |
| 作者单位 | 1.[Chaturvedi, R. K.] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Ctr Integrat Conservat, Menglun 666303, Yunnan, Peoples R China 2.Natl Mineral Dev Corp Ltd, Bailadila Iron Ore Mine, Bacheli Complex, Dantewada 494553, Chhattisgarh, India 3.Raghubanshi, A. S.] Banaras Hindu Univ, Inst Environm & Sustainable Dev, Varanasi 221005, Uttar Pradesh, India 4.Singh, J. S.] Banaras Hindu Univ, Dept Bot, Ecosyst Anal Lab, Varanasi 221005, Uttar Pradesh, India |
| 推荐引用方式 GB/T 7714 | Chaturvedi, R. K.,Tripathi, Anshuman,Raghubanshi, A. S.,et al. Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest[J]. FOREST ECOLOGY AND MANAGEMENT,2021,482(-):-. |
| APA | Chaturvedi, R. K.,Tripathi, Anshuman,Raghubanshi, A. S.,&Singh, J. S..(2021).Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest.FOREST ECOLOGY AND MANAGEMENT,482(-),-. |
| MLA | Chaturvedi, R. K.,et al."Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest".FOREST ECOLOGY AND MANAGEMENT 482.-(2021):-. |
入库方式： OAI收割
来源：西双版纳热带植物园
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