Advanced   Register
XTBG OpenIR  > 2012年后新成立研究组  > 期刊论文

title: Sapling harvest: A predominant factor affecting future composition of tropical dry forests
author: Chaturvedi, R. K.;  Raghubanshi, A. S.;  Singh, J. S.
Issued Date: 2017
Abstract: Degradation of tropical forests is of global concern and studies of the ecosystem processes concerned with the regeneration of trees have a great value for reforestation management. We analysed the structure of a tropical dry forest (TDF) in India in terms of the composition of small-diameter trees (saplings) at five distinct sites located along a gradient of soil moisture, and investigated the effects of biotic and abiotic disturbances on the diversity, aboveground biomass (AGB), AGB-accumulation, annual recruitment index (ARI) and annual mortality index (AMI) of saplings. Aim of the study was to analyse the relative impact of important disturbing factors on the species composition of saplings in the TDF. Study questions were: (1) how is the TDF structured in terms of tree saplings and their AGB? (2) what are the levels of biotic and abiotic disturbances which affect sapling population, forest regeneration and future composition of the community? (3) what is the relationship between species mortality and recruitment in the sites having different disturbance intensities? and (4) what is the relative importance of individual disturbing factors for the recruitment, mortality and structure of sapling community? Stepwise multiple regressions were performed for predicting species richness, stem density, mean AGB, AGB-accumulation, ARI and AMI from mean values of soil moisture content (SMC), harvest index, browse index, drought index and fire index. Results showed 80, 15, 4.5 and 0.5%, mortality through harvest, browse, drought, and fire, respectively. Floristic composition of the sapling population was different compared to that of the mature trees. Selective harvesting of the saplings of large canopy trees such as Terminalia tomentosa and Shorea robusta indicated the possiblity of change in floristic composition of the TDF in future. Tree saplings in our TDF are mainly damaged by illegal harvesting. Compared to browsing and natural mortality on account of drought and fire, damage to saplings due to harvesting was substantially higher at most of the study sites. In this study, the site which had the lowest level of SMC throughout the year, contained the lowest number of species and sapling stems and also had the greatest level of disturbance in terms of damaged saplings. In order to protect and improve the diversity and recruitment of tree saplings, we suggest to restrict the illegal (unauthorized) harvesting and to control browsing in the forest. Particularly the saplings of the dominant canopy trees and those with high biomass accumulation potential need to be protected.
Appears in Collections:2012年后新成立研究组_期刊论文

Files in This Item:

File SizeFormat
Sapling harvest_ A predominant factor affecting future composition of tropical dry forests.pdf1553KbAdobe PDFView  Download

全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Chaturvedi, R. K.,Raghubanshi, A. S.,Singh, J. S. Sapling Harvest: A Predominant Factor Affecting Future Composition Of Tropical Dry Forests[J]. Forest Ecology And Management,2017,384(1):221-235.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Chaturvedi, R. K.]'s Articles
 [Raghubanshi, A. S.]'s Articles
 [Singh, J. S.]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Chaturvedi, R. K.]‘s Articles
 [Raghubanshi, A. S.]‘s Articles
 [Singh, J. S.]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Powered by CSpace