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首页> 外文期刊>International Journal of Environment and Resource >Forest Cover Change Detection Using Remote Sensing and GIS – A Study of Jorhat and Golaghat District, Assam*
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Forest Cover Change Detection Using Remote Sensing and GIS – A Study of Jorhat and Golaghat District, Assam*

机译：使用遥感和GIS的森林覆盖变化检测-阿萨姆邦乔哈特和戈拉格哈特地区研究*

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Assam is known for its extensive forest areas and availability of rich floras and faunas besides other valuable forest products. As per information available from the State Forest Department, the total area under forests in Assam was 26,781.91 Sq. km. at the end of March 2003, out of which 15,492.329 sq. km. was under Reserved Forests and 2,860.942 Sq. Km. under Protected Forest Area. Thus, the Forests area constitutes about 34.14 percent of the total geographical area of Assam. The forests products of the State mainly comprised of industrial wood, fuel wood, bamboo, stone, thatch, cane, sand etc. The State Government from its various Forest products earns a good amount of revenue. The importance of Forestry lies not only with its productivity but also in its capacity to prevent soil erosion. The State Government has therefore continued to impose ban on indiscriminate felling of trees in the State. The comparative study from Survey of India Topographical Map, 1974 and LISS-III 1D, 2005 of two districts of Assam namely Jorhat and Golaghat, it is very clear that there is substantial decrease in the Reserve Forest Area. Dayang Reserve forest is totally vanished by encroachment, same is the condition of Nambar, Holongapar and Disai Valley Reserve Forest where the crown coverage now is less than 40 percent of the total Reserve Forest Area. The total reserve forest area of Jorhat and Golaghat district during 1974 and 2005 is 458.8 sq km and 176.68 sq km respectively.
机译：阿萨姆邦以其广阔的森林面积和丰富的动植物资源而闻名，除了其他有价值的林产品。根据国家林业局提供的信息，阿萨姆邦森林总面积为26,781.91平方米。公里截至2003年3月底，其中15,492.329平方公里。属于保留森林和2,860.942平方尺。 m在森林保护区下。因此，森林面积约占阿萨姆邦总地理面积的34.14％。该州的林产品主要包括工业木材，薪柴，竹，石材，茅草，甘蔗，沙子等。州政府从其各种林产品中获得了可观的收入。林业的重要性不仅在于其生产力，还在于其防止水土流失的能力。因此，州政府继续禁止在该州滥砍滥伐树木。从1974年印度地形图调查和2005年LISS-III 1D对阿萨姆邦两个地区（即Jorhat和Golaghat）进行的比较研究中可以很明显地看出，保护区的森林面积大大减少了。大洋自然保护区完全被侵蚀所破坏，同样，纳姆巴，霍隆加帕和迪赛谷自然保护区的情况也是如此，那里的树冠覆盖率现在不到自然保护区总面积的40％。乔尔哈特和戈拉格哈特地区的自然保护区总面积在1974年和2005年分别为458.8平方公里和176.68平方公里。

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