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Assessing Alpine Ecosystem Dynamics over the Great Himalayan Mountain Range, Kashmir: Earth Observation and Ecosystem Modeling
Journal of the Geological Society of India ( IF 1.2 ) Pub Date : 2021-02-12 , DOI: 10.1007/s12594-021-1647-9
Subiaya Bashir

The alpine vegetation distribution in the Greater Himalaya, Kashmir is preseted and its projected behavior under changing climate using LANDSAT TM (2002) and LANDSAT-8 (2014) data, mapped at 1:30000 scale and having spatial resolution of 30 m. The alpine vegetation in the region spans ∼2990 km2. SRTM DEM was used to delineate the spatial extents of the alpine landscapes (>2500 m asl). A total of nine land use classes which include Alpine pasture, Alpine scrubs, bare land, dense forest, exposed rocks, lakes, rivers, snow and sparse forest were identified in the area. The results reflect both positive and negative changes in all classes over time. Alpine pastures have increased 60.11 km2 followed by Alpine scrubs, which have increased by 54.70 km2. Exposed rocks have reduced to 29.22 km2, while sparse forests have diminished by 23.62 km2. Bare land has decreased by 14.64 km2 and snow has declined by 2.04 km2. Lakes in the area have shrunk by 0.84 km2 and river by 0.02 km. The overall observed results revealed that Alpine pastures have increased by 17% followed by Alpine scrubs to 15%. The future climate projections from Worldclim (RCP 8.5) and other environmental data used in the MaxEnt model suggest increase in the suitable habitat for the shrub species by the mid of 21st century.



中文翻译:

克什米尔大喜马拉雅山脉评估高山生态系统动力学:地球观测和生态系统建模

使用LANDSAT TM(2002)和LANDSAT-8(2014)数据,预设了克什米尔大喜马拉雅山的高山植被分布,并预测了其在气候变化下的行为,其比例为1:30000,空间分辨率为30 m。该地区的高山植被约2990 km 2。SRTM DEM用于描述高山景观的空间范围(> 2500 m asl)。该地区总共确定了九种土地利用类别,包括高山牧场,高山灌木丛,光秃秃的土地,茂密的森林,裸露的岩石,湖泊,河流,积雪和稀疏森林。结果反映了所有类随时间的正负变化。高山牧场增加了60.11 km 2,其次是高山灌木丛,增加了54.70 km 2。裸露的岩石减少到29.22 km 2,而稀疏的森林减少了23.62 km 2。裸地减少了14.64 km 2,积雪减少了2.04 km 2。该地区的湖泊缩水了0.84 km 2,河流缩水了0.02 km。整体观察到的结果表明,高山草场增加了17%,其次是高山灌木丛到15%。从Worldclim(RCP 8.5),并在最大墒模型中使用的其它环境数据中的未来气候预测表明在合适的栖息地用于通过21的中间的灌木增加ST世纪。

更新日期:2021-02-15
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