Forest resource availability and its use by the migratory villages of Uttarkashi, Garhwal Himalaya (India)
Forest resource availability and its use by the migratory villages of Uttarkashi, Garhwal Himalaya (India)
复制标题
森林资源的可用性及其对喜马拉雅山加瓦尔乌塔卡希（Uttarkashi）移民村庄的利用（印度）
DOI：
10.1016/s0378-1127(02)00026-9
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发表时间：
2003
影响因子：
3.7
通讯作者：
Asha Rajvanshi
中科院分区：
文献类型：
--
作者：
A. Awasthi;S. Uniyal;G. Rawat;Asha Rajvanshi
认识到喜马拉雅森林作为当地人民生命支持系统和区域生物多样性储存库的内在价值方面的生态重要性，进行了本研究。其目的是评估现有森林资源的状况、目前对森林资源的压力程度以及Garhwal Himalaya地区乌塔尔卡希部分地区目前土地使用做法的可持续性。我们量化了现有的生物量，再生和高度首选物种的人口及其消费模式。这项研究揭示了资源开采的时空变化。低海拔永久村落和高海拔夏季露营地（Kharaks）的木本优势种现存量分别为140.68±26.91和477.46±31.8t/ha。在永久性村庄，每户家庭的平均薪材消耗量为14.65± 0.78公斤/天，而在露营地，每户临时小屋的消耗量为36.42± 3.35公斤/天。由于当地人和当地称为Gujjars的游牧民的季节性迁移，露营地的人均薪材消耗量较高，给亚高山森林带来了巨大压力。人们注意到，由于游客大量涌入，对自然资源的需求增加，这将进一步导致亚高山地区本已稀缺的资源退化。因此，从长远来看，同时增加对低海拔和高海拔森林的资源开采可能是不可持续的。在不久的将来，这可能会影响中海拔原始森林的地位，而原始森林具有相对较高的有效生物量和更新能力。
Recognising the ecological importance of Himalayan forests in terms of their intrinsic values as life support system for the local people and as repository of regional biodiversity, the present study was conducted. It aimed at assessing the status of available forest resources, current levels of pressure on them and sustainability of current land use practices in a part of district Uttarkashi in Garhwal Himalaya. We quantified available standing biomass, regeneration and population of highly preferred species and their consumption patterns. The study revealed a spatio-temporal variation in resource extraction. The standing biomass of preferred woody species at low altitude permanent villages and high altitude summer camping sites (Kharaks) were 140.68±26.91 and 477.46±31.8t/ha, respectively. Average fuel wood consumption per household at permanent villages was 14.65±0.78kg/day whereas consumption per temporary hut (Chhans) at camping sites was 36.42±3.35kg/day. Higher per capita consumption of fuel wood in the camping sites due to seasonal migration of local as well as transhumants locally known as Gujjars had put immense pressure on sub-alpine forests. An increase in the demands for natural resources was noticed due to an augmented influx of tourists, which would further lead to the degradation of already scarce resources in the sub-alpine areas. Thus increased resource extraction from the low as well as high altitude forests simultaneously, may not be sustainable in the long run. In near future this might affect the status of the undisturbed forest at middle elevation, which has relatively high available biomass and regeneration capacity.