Aboveground biomass and carbon stock assessment in the Eastern Himalaya foothills along the Indo-Bhutan border

IF 1.8 2区社会学 Q2 GEOGRAPHY Australian Geographer Pub Date : 2022-07-03 DOI:10.1080/00049182.2022.2092992

K. Sharma, A. Saikia, Pankaj Thapa, Bimal Chettry

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Abstract

ABSTRACT Aboveground biomass (AGB) and the distribution of carbon stock was assessed in a swath of territory along the Indo-Bhutan border. This tract between Brahmaputra river’s floodplain and foothills of Eastern Himalayas, is a part of the Indo-Bhutan biodiversity hotspot. Using Landsat satellite data, the analysis assessed spatio-temporal landuse/landcover changes during 1989 and 2019. AGB and carbon stock were estimated using a forest inventory. Total AGB losses were 21.44 and 7.24 Mt in India and Bhutan respectively. Tree density ranged between 107–350 and 253–853 trees ha−1 in India and Bhutan respectively and tended to decrease with increasing tree diameter. Anthocephalus Chinensis (76 trees ha−1), Aphanamixis Polystachya (64), Syzygium Formosum (62) were the most dominant species in India while Quercus Spp (249 trees ha−1), Abies densa (190), Rhodendron (155) dominated in Bhutan. AGB and carbon losses were more marked in India than Bhutan. Land cover changes were not uniformly spatially distributed throughout the study area and dense forests in India decreased at a rate seven times that of Bhutan’s. Consequently, AGB losses in India were three fold those of Bhutan’s.

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印度-不丹边界喜马拉雅山脉东部山麓的地上生物量和碳储量评估

摘要：在印度-不丹边境的一片土地上评估了地上生物量（AGB）和碳储量的分布。布拉马普特拉河泛滥平原和喜马拉雅山脉东部山麓之间的这片区域是印度-不丹生物多样性热点的一部分。该分析利用陆地卫星数据评估了1989年和2019年期间的时空土地利用/土地覆盖变化。AGB和碳储量是使用森林清单估算的。AGB总损失分别为21.44和7.24 Mt分别位于印度和不丹。树木密度介于107–350和253–853之间树木在印度和不丹分别为ha−1，并随着树木直径的增加而减少。Anthocephalus Chinensis（76 树木 ha−1）、Aphanamixis Polystachya（64）、Syzygium Formosum（62）是印度最具优势的物种，而Quercus Spp（249 树木 ha−1）、Abies densa（190）、Rhonddron（155）在不丹占主导地位。印度的AGB和碳损失比不丹更为显著。土地覆盖变化在整个研究区域的空间分布并不均匀，印度的茂密森林减少速度是不丹的七倍。因此，AGB在印度的损失是不丹的三倍。

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来源期刊

Australian Geographer GEOGRAPHY-

CiteScore

4.10

自引率

8.30%

发文量

期刊介绍： Australian Geographer was founded in 1928 and is the nation"s oldest geographical journal. It is a high standard, refereed general geography journal covering all aspects of the discipline, both human and physical. While papers concerning any aspect of geography are considered for publication, the journal focuses primarily on two areas of research: •Australia and its world region, including developments, issues and policies in Australia, the western Pacific, the Indian Ocean, Asia and Antarctica. •Environmental studies, particularly the biophysical environment and human interaction with it.