| Land use and land cover changes in Jahlma watershed of the Lahaul valley, cold desert region of the northwestern Himalaya, India |
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| 作者姓名： | Santaram S. OINAM Yashwant S. RAWAT R. S. KHOIYANGBAM KHWAI KPAM Gajananda Jagdish C. KUNIYAL S. C. R. VISHVAKARMA |
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| 作者单位： | [1]G.B. Pant Institute of Himalayan Environment and Development, Himachal Unit, Mohal-Kullu, Himachal Pradesh-175126, India [2]Shriram Institute For Industrial Research, 19, University Road, Delhi-110 007, India |
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| 基金项目： | The authors are thankful to the Director of GBPIHED, Kosi-Katarmal, Almora （Uttaranchal）. The financial assistance given by the Ministry of Environment and Forest, Govt. of India, New Delhi to conduct this research is also highly acknowledged with thanks. The first author is thankful to Dr. D. C. Pandey, Senior Reader, Deptt. of Geography, DSB Campus, Kumaun University, Nainital （U.A） for his moral support and advice. |
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| 摘 要： | Land use and land cover changes that occurred during the period from 1991 to 2001 in the Jahlma watershed of the Lahaul valley, a cold desert region of the northwestern Himalaya, were evaluated using land use data and visual interpretation of IRS Satellite imageries. The results revealed that out of the six major land use forms within the watershed, land areas under agriculture, kitchen garden and settlement land were found increased, whereas a declining trend was recorded in areas under grassland, barren land and Salix plantation. The cultivated land within the watershed increased from 54.87 % （total of agriculture land, kitchen garden, grassland, barren land, Salix plantation and residential area） in 1991 to 56.89 % in 2OOl, corresponding to an expansion of 4.41 ha. On the other hand, the areas of grassland decreased from 31.41% in 1991 to 29.81% in 2001. Such a dramatic land use and land cover changes taking place within the 33 km^2 watershed area in a single decade deafly indicates the prevailing danger of land degradation and environmental deterioration in the region.
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| 关 键 词： | 土地利用 分水岭 峡谷 印度 卫星图像 土地覆盖度 |
| 文章编号： | 1672-6316（2005）02-0129-08 |
| 收稿时间： | 2004-08-30 |
| 修稿时间： | 2004-12-01 |
Land use and land cover changes in Jahlma watershed of the Lahaul valley, cold desert region of the northwestern Himalaya, India |
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| Santaram S. OINAM Yashwant S. RAWAT R. S. KHOIYANGBAM KHWAI KPAM Gajananda Jagdish C. KUNIYAL S. C. R. VISHVAKARMA.Land use and land cover changes in Jahlma watershed of the Lahaul valley, cold desert region of the northwestern Himalaya, India[J].Journal of Mountain Science,2005,2(2):129-136. |
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| Authors: | Santaram S Oinam Yashwant S Rawat R S Khoiyangbam Khwairakpam Gajananda Jagdish C Kuniyal S C R Vishvakarma |
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| Institution: | (1) G.B. Pant Institute of Himalayan Environment and Development, Himachal Unit, Mohal-Kullu, 175 126 Himachal Pradesh, India;(2) Shriram Institute For Industrial Research, 19, University Road, 110 007 Delhi, India |
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| Abstract: | Land use and land cover changes that occurred during the period from 1991 to 2001 in the Jahlma watershed of the Lahaul valley,a cold desert region of the northwestern Himalaya,were evaluated using land use data and visual interpretation of IRS Satellite imageries. The results revealed that out of the six major land use forms within the watershed,land areas under agriculture,kitchen garden and settlement land were found increased,whereas a declining trend was recorded in areas under grassland,barren land and Salix plantation. The cultivated land within the watershed increased from 54.87 % (total of agriculture land,kitchen garden,grassland,barren land,Salix plantation and residential area) in 1991 to 56.89 % in 2001,corresponding to an expansion of 4.41 ha. On the other hand,the areas of grassland decreased from 31.41 % in 1991 to 29.81 % in 2001. Such a dramatic land use and land cover changes taking place within the 33 km2 watershed area in a single decade clearly indicates the prevailing danger of land degradation and environmental deterioration in the region. |
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| Keywords: | Watershed satellite imagery land use land cover Lahaul |
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