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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Long-term ecological and biodiversity monitoring in the Himalaya using satellite remote sensing
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Long-term ecological and biodiversity monitoring in the Himalaya using satellite remote sensing

机译：使用卫星遥感对喜马拉雅山进行长期生态和生物多样性监测

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The IPCC in its Fourth Assessment Report (AR4) described the Himalayan Region as data-deficient in terms of climate monitoring. This is a serious impediment to global research initiatives and thus necessitates long-term ecological monitoring (LTEM) across the Himalaya. Being governed by low temperature conditions, the high-altitude regions in Himalaya are more responsive to changing environmental conditions and hence serve as better indicators. We identified few Protected Areas (PAs) and selected forest core area and ecotones along the temperate, sub-alpine, alpine and cold desert ecosystems in Himachal Pradesh to establish a network of permanent monitoring plots (PMPs). Land and vegetation cover map of three selected PAs has been prepared using Landsat TM satellite data. Among the 10 PMPs, the temperate and tree line forests in the GHNP were found to have the highest tree diversity with Taxus wallichiana showing good stand density and regeneration. The soil pH was found to be higher for cold desert and lower for tree line forests and alpine meadows. Soil total carbon and nitrogen contents ranged from 1.08% to 13.37% and 0.094% to 1.14% respectively. It was observed that the herbs diversity showed a positive trend with increasing soil carbon and nitrogen concentrations. Satellite remote sensing proves to be a useful tool in an LTEM study, including biodiversity assessment and climate change research in complex terrains such as the Himalaya.
机译：IPCC在其第四次评估报告（AR4）中将喜马拉雅地区描述为缺乏气候监测数据。这严重阻碍了全球研究计划，因此需要在喜马拉雅地区进行长期的生态监测（LTEM）。由于受到低温条件的控制，喜马拉雅山的高海拔地区对环境条件的变化更加敏感，因此可以作为更好的指标。我们在喜马al尔邦确定了沿温带，亚高山，高山和寒冷沙漠生态系统的几个保护区（PAs）和选定的森林核心区和过渡带，以建立永久性监测区（PMP）网络。已使用Landsat TM卫星数据绘制了三个选定PA的土地和植被覆盖图。在这10个PMP中，发现GHNP中的温带和林木森林具有最高的树木多样性，而红豆杉显示出良好的林分密度和再生能力。发现在寒冷的沙漠中，土壤的pH值较高，而树木林和高山草甸的土壤pH值则较低。土壤总碳和氮含量分别为1.08％至13.37％和0.094％至1.14％。观察到，随着土壤碳和氮浓度的增加，草药的多样性呈现出积极的趋势。事实证明，卫星遥感是LTEM研究的有用工具，包括在喜马拉雅山等复杂地形上的生物多样性评估和气候变化研究。

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