Effects of logging on the ecological strategy spectrum of a tropical montane rain forest

Ecological Indicators

Runguo Zang¹  Yue Xu¹  Jihong Huang¹  Jie Yao²  Yi Ding²  Xin Han² 

[1] Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China;Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;

关键词: Logging intensity;    Ecological strategy;    Ecological strategy spectrum;    CSR theory;    Functional traits;    Tropical montane rain forest;   

DOI  :  

来源: DOAJ

【 摘 要 】

Ecological strategy is the various adaptation tactics of species to different living conditions, which can reflect their contrasting approaches to survival in varying habitats. The number and relative abundance of species in different types of ecological strategies actually forms an ecological strategy spectrum in a community. Logging is a widespread driver of forest degradation, severely influencing the composition of communities and the ecological strategy spectra in forest ecosystems. Understanding effects of logging on the ecological strategy composition of communities is vital to biodiversity conservation and efficient restoration of degraded forest ecosystems. Yet, the knowledge of how ecological strategies of different communities respond to varying types and intensities of disturbances in tropical forests are largely unknown. Here, by establishing forest dynamics plots (FDPs) in communities experienced increasing logging intensities (no logging (old-growth (OG)), selective logging (SL), and clear-cutting (CL) and measuring plant functional traits in a tropical montane rain forest, we compared the changes in ecological strategies of these stands by using Grime’s competitor, stress-tolerator, ruderal (CSR) scheme and by “StrateFy” ordination method based on measurements of three plant functional traits (Leaf area (LA), leaf dry matter content (LDMC), and specific leaf area (SLA)). Results showed that strategy number increased and ecological strategy spectra of communities changed significantly with increasing logging intensity: the proportion of S-selected strategies decreased while those of C- and R-selected strategies increased with increasing logging intensity. Community-weighted mean CSR (CWM-CSR) strategies of stands shifted from S to the C & R direction, i.e. CWM-C and CWM-R values increased and CWM-S values decreased with increasing logging intensity. Our findings suggest that logging intensity should be carefully controlled in harvesting planning, so that the recovery of species assemblages with multiple ecological strategies can be assured and the ecosystem services from these biodiverse forests can be provided sustainably.

【 授权许可】

Unknown