Biodiversity promotes tree growth during succession in subtropical forest.
Biodiversity promotes tree growth during succession in subtropical forest.
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DOI：
10.1371/journal.pone.0081246
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Niklaus PA
中科院分区：
文献类型：
--
作者：
Barrufol M;Schmid B;Bruelheide H;Chi X;Hector A;Ma K;Michalski S;Tang Z;Niklaus PA
植物物种多样性的丧失会影响生态系统的功能，初级生产力下降是包括植树造林在内的实验性植物组合中最常报告的影响。尽管生物多样性对全球生物地球化学循环和气候具有重要意义，但人们对生物多样性在自然生态系统（包括森林）中的作用知之甚少。一般来说，对树木多样性的实验操作需要几十年才能产生最终结果。因此，迄今为止，天然林的生物多样性影响仅来自抽样调查或元分析，而最初并没有为多样性选择地块。研究了中国东南部亚热带森林的生物量和生长。利用次生演替过程中物种补充的变化，我们采用了比较研究设计，选择森林样地跨越物种丰富度的梯度。我们反复审查了两个树木大小的队列，包括93种，属于57属，33科的茎直径。使用一般线性和结构方程模型，根据物种丰富度、生长相关性状的功能多样性和系统发育多样性分析了树木的大小和生长。连续年龄随多样性而变化，但在两个规模的队列中情况有所不同。样地水平的茎断面积和生长量与物种丰富度呈正相关，而生长量与演替年龄呈负相关。物种丰富，功能和遗传多样性的地块的生产力的提高是由更大的平均大小和更多的树木。我们报告的生物多样性效应超过了实验研究，抽样调查和荟萃分析，表明亚热带树木多样性是森林生产力和干扰后再生长的重要驱动力，支持这些生态系统提供生态服务。
Losses of plant species diversity can affect ecosystem functioning, with decreased primary productivity being the most frequently reported effect in experimental plant assemblages, including tree plantations. Less is known about the role of biodiversity in natural ecosystems, including forests, despite their importance for global biogeochemical cycling and climate. In general, experimental manipulations of tree diversity will take decades to yield final results. To date, biodiversity effects in natural forests therefore have only been reported from sample surveys or meta-analyses with plots not initially selected for diversity. We studied biomass and growth of subtropical forests stands in southeastern China. Taking advantage of variation in species recruitment during secondary succession, we adopted a comparative study design selecting forest plots to span a gradient in species richness. We repeatedly censored the stem diameter of two tree size cohorts, comprising 93 species belonging to 57 genera and 33 families. Tree size and growth were analyzed in dependence of species richness, the functional diversity of growth-related traits, and phylogenetic diversity, using both general linear and structural equation modeling. Successional age covaried with diversity, but differently so in the two size cohorts. Plot-level stem basal area and growth were positively related with species richness, while growth was negatively related to successional age. The productivity increase in species-rich, functionally and phylogenetically diverse plots was driven by both larger mean sizes and larger numbers of trees. The biodiversity effects we report exceed those from experimental studies, sample surveys and meta-analyses, suggesting that subtropical tree diversity is an important driver of forest productivity and re-growth after disturbance that supports the provision of ecological services by these ecosystems.
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影响因子：
4.8
作者：
ABRAMS, PA
通讯作者：
ABRAMS, PA
中国亚热带森林次生林演替过程中的群落聚集
影响因子：
6.1
作者：
Bruelheide, Helge;Boehnke, Martin;Schmid, Bernhard
通讯作者：
Schmid, Bernhard
影响因子：
56.9
作者：
DIXON, RK;BROWN, S;WISNIEWSKI, J
通讯作者：
WISNIEWSKI, J
DOI：
10.1073/pnas.0608998104
发表时间：
2007-04-17
影响因子：
11.1
作者：
Bala, G.;Caldeira, K.;Mirin, A.
通讯作者：
Mirin, A.
影响因子：
64.8
作者：
Hooper, David U.;Adair, E. Carol;O'Connor, Mary I.
通讯作者：
O'Connor, Mary I.