[1]CHEN Chaoqun,WU Yu,WANG Jian,et al.Interconversion Process and the Proper Ratio of Artificial and Natural Oasis in the Upper Reaches of Tarim River Basin[J].Research of Soil and Water Conservation,2018,25(02):176-182.
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Interconversion Process and the Proper Ratio of Artificial and Natural Oasis in the Upper Reaches of Tarim River Basin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 02
Page number:
176-182
Column:
Public date:
2018-04-03
- Title:
- Interconversion Process and the Proper Ratio of Artificial and Natural Oasis in the Upper Reaches of Tarim River Basin
- Keywords:
- artificial oasis; natural oasis; interconversion process; area ratio
- CLC:
- X171.1
- DOI:
- -
- Abstract:
- This paper expected to analyze the changing rule and the ratio of the area of artificial and the natural oases in the upper reaches of Tarim River, and discussed the suitable area ratio of the artificial and natural oases. Based on the Landsat TM/ETM remote sensing image of the upper reaches of Tarim River, this paper extracted the land use/cover type information of 1990, 2000 and 2010. The results showed that from 1990 to 2010, the artificial oasis area increased by 1 458.69 km2, the expansion speed was 72.93 km2/year, and the natural oasis area decreased by 1 394.04 km2, and the decreasing speed was 69.70 km2/year; during the period from 1990 to 2010, grassland, forestland, presented the trend of changing into arable land and construction land; the vegetation growing was declining:high covered grassland changed into middle and low covered grassland, middle covered grassland changed into low covered grassland, shrub land gradually degraded to grassland, low covered grassland changed into the desert. The area ratio artificial oasis to natural oasis increased in recent 20 years, in 1990, 2000 and 2010, the area ratios of artificial oasis and natural oasis were 2:8, 2:8, 3:7, respectively; during the period from 1990 to 2010, artificial oasis area was expanding, natural oasis area was shrinking; the ratio of increase of artificial oasis area to decrease of natural oasis area was 1:0.7.
- References:
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