DOI: 10.1016/j.gecco.2019.e00850
论文题名: Do climate and human disturbance determine the sizes of endangered Metasequoia glyptostroboides trees in their native range?
作者: Fan K. ; Ai X. ; Yao L. ; Huang J. ; Xu Y. ; Lu X. ; Ding Y. ; Zang R.
刊名: Global Ecology and Conservation
ISSN: 23519894
出版年: 2020
卷: 21 语种: 英语
英文关键词: Canopy sizes
; Diameter at breast heights
; Elevations
; Native range
; Tree heights
英文摘要: Under global change scenarios, climate change and habitat loss or alteration as a result of human activities are regarded as two important factors affecting species’ distributions and in situ conservation. Metasequoia glyptostroboides Hu et Cheng, a living fossil, occurs naturally only in a small region in Central China, with most individuals now growing near human settlements. The climate in the native range is poorly characterized, and little is known regarding what potential factors (e.g. climate variables) explain variation in the sizes of M. glyptostroboides trees. Here, we found that climate variables were not, or only very weakly, related to three measures of tree sizes: canopy sizes, DBHs (diameter at breast heights) and heights. As elevations increased, tree heights and canopy sizes decreased significantly, but no relationship was found with DBHs. On average, M. glyptostroboides trees were larger, in terms of DBHs and heights, when growing within 30 m of a house, road or farmland versus more than 30 m from one or more of these features; however, canopy sizes showed the opposite trend for trees growing near roads and farmlands. Climate variables, elevations, and human disturbance explained little variations in tree canopy sizes, DBHs or heights, though human disturbance was the most important factor of the tree for DBHs. Elevations, mean annual temperature, and precipitation in the wettest quarter explained the most variation in tree heights, while elevations, precipitation in the wettest quarter and the distance to farmland affected canopy sizes. Due to its poor natural regeneration in the native range, more effective in situ conservation is urgently needed for the existing small M. glyptostroboides populations. © 2019 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159039
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Forest Ecology and Environment of the State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment, and Protection, Chinese Academy of Forestry, Beijing, 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China; School of Forestry and Horticulture, Hubei University for Nationalities, Enshi, Hubei 445000, China; School of Agronomy, Liaocheng University, Liaocheng, 252000, China
Recommended Citation:
Fan K.,Ai X.,Yao L.,et al. Do climate and human disturbance determine the sizes of endangered Metasequoia glyptostroboides trees in their native range?[J]. Global Ecology and Conservation,2020-01-01,21