Kinetic energy of Throughfall in subtropical forests of SE China - effects of tree canopy structure, functional traits, and biodiversity.
Kinetic energy of Throughfall in subtropical forests of SE China - effects of tree canopy structure, functional traits, and biodiversity.
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DOI：
10.1371/journal.pone.0049618
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Scholten T
中科院分区：
文献类型：
--
作者：
Geißler C;Nadrowski K;Kühn P;Baruffol M;Bruelheide H;Schmid B;Scholten T
穿透动能(TKE)在森林土壤侵蚀中具有重要作用。研究了中国东南部古田山国家级自然保护区次生亚热带阔叶林TKE与生物多样性、功能多样性以及林分结构变量的关系。古田山国家级自然保护区是北半球的生物多样性热点，有250多种木本植物。利用混合模型方法，我们可以确定所有这些变量对TKE的显着影响：TKE随着稀有树种丰富度的增加而增加，随着针叶树种比例的增加和叶面积指数(LAI)的增加而降低。此外，对于平均降雨量，TKE随着树冠高度的增加而减少，而对于高降雨量，情况并非如此。在几次降雨事件中，穿透雨的空间格局是稳定的。TKE的时间变化随降雨强度的增大而减小，随树种多样性的增大而增大。我们的结果表明，在整个季节内，多样性较多的林分必须比多样性较少的林分应对更高的累积雨滴能量。然而，单一雨滴的动能(KE)在不同林分中的可预测性较差，因为KE的变异性较大。本文首次对不同类型亚热带森林土壤侵蚀防治的生态系统功能进行了研究。
Throughfall kinetic energy (TKE) plays an important role in soil erosion in forests. We studied TKE as a function of biodiversity, functional diversity as well as structural stand variables in a secondary subtropical broad-leaved forest in the Gutianshan National Nature Reserve (GNNR) in south-east China, a biodiversity hotspot in the northern hemisphere with more than 250 woody species present. Using a mixed model approach we could identify significant effects of all these variables on TKE: TKE increased with rarefied tree species richness and decreased with increasing proportion of needle-leaved species and increasing leaf area index (LAI). Furthermore, for average rainfall amounts TKE was decreasing with tree canopy height whereas for high rainfall amounts this was not the case. The spatial pattern of throughfall was stable across several rain events. The temporal variation of TKE decreased with rainfall intensity and increased with tree diversity. Our results show that more diverse forest stands over the season have to cope with higher cumulative raindrop energy than less diverse stands. However, the kinetic energy (KE) of one single raindrop is less predictable in diverse stands since the variability in KE is higher. This paper is the first to contribute to the understanding of the ecosystem function of soil erosion prevention in diverse subtropical forests.
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影响因子：
4.4
作者：
HALL, RL;CALDER, IR
通讯作者：
CALDER, IR
影响因子：
4.4
作者：
Chen, JM;Rich, PM;Plummer, S
通讯作者：
Plummer, S
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：
4.8
作者：
HURLBERT, SH
通讯作者：
HURLBERT, SH
影响因子：
3.3
作者：
KWAAD, FJPM
通讯作者：
KWAAD, FJPM