尼泊尔管理的Hill Sal(Shorea robusta)社区森林比未管理的森林更能保持和保存碳吗?

Q3 Environmental Science
S. Gautam, S. Timilsina, M. Shrestha, Bina Adhikari, Binay Bahadur Adhikari Khatri, J. Timsina
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引用次数: 0

摘要

尼泊尔社区森林在可持续森林管理和改善依赖森林的社区生计方面得到全球认可,但它们对树木和土壤中碳固存的贡献却很少得到研究。本研究旨在了解管理措施对尼泊尔中部以萨尔(Shorea robusta)为主的两个群落林(Taldanda)(有管理)和当当格(Dangdunge)(无管理)的碳储量的影响。在每个森林内设置21个同心样地,每个样地面积为250 m2,以估计不同的碳库,并采用0.5%的分层随机抽样强度收集数据。结果表明,两种碳源地上、地下生物量和固碳潜力差异显著(p<0.05)。人工林和非人工林的总碳储量分别为269.3±27.4和150.0±22.7 t /ha,前者是后者的1.79倍。人工林土壤有机碳储量显著高于非人工林(p<0.05)。土壤有机碳在表层(0 ~ 10 cm)最高,随土层深度的增加而逐渐降低。所有其他测量的碳库值在有管理的森林中高于未管理的森林。碳储量的差异是由于不同森林管理活动的操纵,包括间伐、木材提取、火灾控制、放牧和燃料木材/饲料提取。该研究表明,实施适当的森林管理对于增加森林树木和土壤的碳储量是必要的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Do Managed Hill Sal (Shorea robusta) Community Forests of Nepal Sequester and Conserve More Carbon than Unmanaged Ones?
Nepalese community forests are globally recognized for sustainable forest management and improving the livelihoods of forest-dependent communities, but their contribution to carbon sequestration in trees and soil is rarely studied. This study was performed to understand the effect of management practices on carbon stock of two community forests (CFs) - Taldanda (managed) and Dangdunge (unmanaged) - dominated by Sal (Shorea robusta) in the mid-hills of Nepal. Twenty-one concentric sample plots, each of 250 m2, were laid out in each forest to estimate different carbon pools and a stratified random sampling intensity of 0.5% used to collect data. Results showed significant (p<0.05) differences in above and below-ground biomass and carbon sequestration potential between the two CFs. The managed and unmanaged forests had total carbon stock of 269.3±27.4 and 150.0±22.7 ton/ha, respectively, demonstrating 1.79 times higher carbon stock in the former than the latter. The managed forest had significantly (p<0.05) greater mean soil organic carbon (SOC) stock than the unmanaged forest. The SOC was highest in the upper soil layer (0-10 cm), with a steady decrease as the soil depth increased. All other measured carbon pools values were higher in managed compared to unmanaged forest. The difference in carbon stock was due to the manipulation of different forest management activities, including thinning, timber extraction, fire control, grazing, and fuel wood/fodder extraction. The study suggests that the implementation of proper forest management would be necessary for enhancing carbon stock in forest trees and soils.
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来源期刊
Environment and Natural Resources Journal
Environment and Natural Resources Journal Environmental Science-Environmental Science (all)
CiteScore
1.90
自引率
0.00%
发文量
49
审稿时长
8 weeks
期刊介绍: The Environment and Natural Resources Journal is a peer-reviewed journal, which provides insight scientific knowledge into the diverse dimensions of integrated environmental and natural resource management. The journal aims to provide a platform for exchange and distribution of the knowledge and cutting-edge research in the fields of environmental science and natural resource management to academicians, scientists and researchers. The journal accepts a varied array of manuscripts on all aspects of environmental science and natural resource management. The journal scope covers the integration of multidisciplinary sciences for prevention, control, treatment, environmental clean-up and restoration. The study of the existing or emerging problems of environment and natural resources in the region of Southeast Asia and the creation of novel knowledge and/or recommendations of mitigation measures for sustainable development policies are emphasized. The subject areas are diverse, but specific topics of interest include: -Biodiversity -Climate change -Detection and monitoring of polluted sources e.g., industry, mining -Disaster e.g., forest fire, flooding, earthquake, tsunami, or tidal wave -Ecological/Environmental modelling -Emerging contaminants/hazardous wastes investigation and remediation -Environmental dynamics e.g., coastal erosion, sea level rise -Environmental assessment tools, policy and management e.g., GIS, remote sensing, Environmental -Management System (EMS) -Environmental pollution and other novel solutions to pollution -Remediation technology of contaminated environments -Transboundary pollution -Waste and wastewater treatments and disposal technology
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