植被、土壤和生计:森林火灾对印度东部干燥落叶林的复杂影响

IF 3.6 2区 农林科学 Q2 ENVIRONMENTAL SCIENCES Land Degradation & Development Pub Date : 2024-10-10 DOI:10.1002/ldr.5335
Surajit Banerjee, Antarlina Chakraborty, Dolors Armenteras, Dipanwita Dutta, Arnab Kundu, Debajit Datta
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引用次数: 0

摘要

本研究在阿焦迪亚(Ajodhya)和苏苏尼亚(Susunia)丘陵易发生火灾的干燥落叶林中进行,旨在评估森林火灾事件对植被健康、土壤养分平衡和非木材森林产品(NTFP)供应的不同影响,这些因素共同调节着当地社区的生计。通过在研究区受火灾影响(FA)和未受火灾影响(FU)的林地进行横断面取样,对植被健康和土壤养分库进行了评估。土壤取样有两个深度(D1:0-15 厘米,D2:15-30 厘米)。与 FU 相比,FA 的植被参数,如基部面积、树冠覆盖率、地上生物量、物种多样性和树木密度都明显较低(p < 0.01)。在 D1 土壤中,FA 的有机碳和可利用氮明显低于 FU(p < 0.01)。在 D2,FA 和 FU 地块的有机碳(p < 0.01)、可利用氮(p < 0.001)和可利用磷(p < 0.01)含量存在显著差异。对附近以森林为生的社区进行的参与式评估表明,几乎每一次森林火灾都是人为造成的。这些事件对 Shorea robusta 树叶、薪材、野生蘑菇、Madhuca indica 果实等的采摘造成了不利影响。相反,火灾发生 2-3 周后,由于尚未开发的林地被清理出来,黑叶桉树叶的产量有所增加。总之,本研究试图将火灾对环境的影响与社会经济影响结合起来,这一点从自然资源退化、基本非物质森林产品匮乏以及人与动物冲突数量和强度的增加中可见一斑。
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Vegetation, Soil, and Livelihoods: The Complex Effects of Forest Fires on Eastern India's Dry Deciduous Forests
This study, conducted in fire‐prone dry deciduous forests of Ajodhya and Susunia hills, aims to assess the diverse impacts of forest fire events on vegetation health, soil nutrient balance, and availability of nontimber forest products (NTFPs) that conjointly modulate the livelihoods of local communities. Vegetation health and soil nutrient pool were assessed through transect sampling at both fire‐affected (FA) and fire‐unaffected (FU) forest plots of the study area. Two depths (D1: 0–15 cm, D2: 15–30 cm) were considered for soil sampling. Vegetation parameters like basal area, canopy cover, above‐ground biomass, species diversity, and tree density were significantly lower (p < 0.01) in FA compared to FU. Organic C and available N were significantly lower (p < 0.01) at D1 of soils in FA than in FU. Significant differences were found in organic C (p < 0.01), available N (p < 0.001), and available P (p < 0.01) contents of FA and FU plots at D2. Participatory appraisals conducted among the neighboring forest‐dependent communities indicated that almost every forest fire event was human‐induced. These adversely affected extraction of Shorea robusta leaves, fuelwood, wild mushrooms, Madhuca indica fruits, etc. Conversely, Diospyros melanoxylon leaf production increased after 2–3 weeks of fire due to clearing up of hitherto untapped forestlands. Cumulatively, this study uniquely attempts to contextualize the environmental impacts of fire with its socio‐economic ramifications as evident from degrading natural resources, scarcity of essential NTFPs, and escalation in number plus intensity of human–animal conflicts.
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来源期刊
Land Degradation & Development
Land Degradation & Development 农林科学-环境科学
CiteScore
7.70
自引率
8.50%
发文量
379
审稿时长
5.5 months
期刊介绍: Land Degradation & Development is an international journal which seeks to promote rational study of the recognition, monitoring, control and rehabilitation of degradation in terrestrial environments. The journal focuses on: - what land degradation is; - what causes land degradation; - the impacts of land degradation - the scale of land degradation; - the history, current status or future trends of land degradation; - avoidance, mitigation and control of land degradation; - remedial actions to rehabilitate or restore degraded land; - sustainable land management.
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