Leaf Trait Variation with Environmental Factors at Different Spatial Scales: A Multilevel Analysis Across a Forest-Steppe Transition
文献类型：期刊论文
| 作者 | Wen, ZM (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.; Haijing Shi; Zhongming Wen; Minghang Guo |
| 刊名 | FORESTS
 |
| 出版日期 | 2018 |
| 卷号 | 9期号:3 |
| 关键词 | Environmental Filtering Community Traits Multilevel Model Spatial Scale |
| ISSN号 | 1999-4907 |
| DOI | 10.3390/f9030122 |
| 文献子类 | Article |
| 英文摘要 | In mountain areas, the distribution of plant communities is affected by both regional and microhabitat conditions. The degree to which these different spatial factors contribute to plant communities is not well understood, because few studies have used a uniform sampling methodology to measure trait variation across the range of ecological scales. In this study, a stratified sampling method was used to study community weighted leaf traits and environment factors at different spatial (transect and plot) scales. We measured 6 leaf traits (specific leaf area, leaf tissue density, leaf thickness, leaf carbon, nitrogen and phosphorus content) in 258 communities from 57 sites in 9 transects nested within 3 vegetation zones. These communities are located in the loess hilly and gully area of the Yanhe river watershed. We coupled climatic factors at the transect scale with topographic and edaphic factors at the plot scale using multilevel regression modeling to analyze the trait variation associated with spatial scales. At the transect scale, the mean annual rainfall showed a highly significant positive effect on the leaf nitrogen concentration (LNC) (p < 0.01), while it had a highly significant negative effect on leaf thickness (LT) and leaf tissue density (LTD) (p < 0.001) and a significant negative effect on leaf carbon concentration (LCC) (p < 0.05), explaining 10.91%, 36.08%, 57.25% and 66.01% of LTD, LT, LCC and LNC variation at transect scale respectively. At a plot scale, the slope aspect showed a highly significant positive effect on specific leaf area (SLA) and LNC but a highly significant negative effect on LT and LTD. The soil water content had a significant negative effect on LT (p < 0.05) and LTD (p < 0.001) while soil organic matter showed a positive effect on SLA (p < 0.001) and LNC (p < 0.01). Totally, plot scale variables explained 7.28%, 43.60%, 46.43%, 75.39% and 81.17% of LCC, LT, LNC, LTD and SLA variation. The elevation showed positive effect only on LCC (p < 0.05). The results confirmed the existence of consistent trait-environment relationships at both transect and plot scales. These trait-environment relationships at different spatial scales will provide mechanistic understanding on the vegetation community assembly in the study area. Practically, ignoring trait variation within transects will underestimate roles of microhabitat filters in community assembly, and leads to the homogenization of restoration species. This will be like the past restoration plans and programs, causing serious environmental problems such as dwarf trees and soil desiccation. |
| 学科主题 | Forestry |
| 出版地 | ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND |
| 语种 | 英语 |
| WOS记录号 | WOS:000428508200025 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China [41501055, 41671289] ; National Natural Science Foundation of China [41501055, 41671289] ; CAS "light of West China" program [XAB2015B08] ; CAS "light of West China" program [XAB2015B08] ; PhD Start-up Fund of Northwest A F University [2452015342] ; PhD Start-up Fund of Northwest A F University [2452015342] ; National Natural Science Foundation of China [41501055, 41671289] ; National Natural Science Foundation of China [41501055, 41671289] ; CAS "light of West China" program [XAB2015B08] ; CAS "light of West China" program [XAB2015B08] ; PhD Start-up Fund of Northwest A F University [2452015342] ; PhD Start-up Fund of Northwest A F University [2452015342] |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/8283]  |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Wen, ZM (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China. |
| 作者单位 | Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, ZM ,Haijing Shi,Zhongming Wen,et al. Leaf Trait Variation with Environmental Factors at Different Spatial Scales: A Multilevel Analysis Across a Forest-Steppe Transition[J]. FORESTS,2018,9(3). |
| APA | Wen, ZM ,Haijing Shi,Zhongming Wen,&Minghang Guo.(2018).Leaf Trait Variation with Environmental Factors at Different Spatial Scales: A Multilevel Analysis Across a Forest-Steppe Transition.FORESTS,9(3). |
| MLA | Wen, ZM ,et al."Leaf Trait Variation with Environmental Factors at Different Spatial Scales: A Multilevel Analysis Across a Forest-Steppe Transition".FORESTS 9.3(2018). |
入库方式： OAI收割
来源：水土保持研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。