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首页> 外文期刊>The Science of the Total Environment >Assessment of changes in oasis scale and water management in the arid Manas River Basin, north western China
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Assessment of changes in oasis scale and water management in the arid Manas River Basin, north western China

机译：西北干旱玛纳斯河流域绿洲规模和水管理变化的评估

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Modern water-saving irrigation technology has expanded the scale of agricultural oases in arid and semi-arid regions of China. In this study, we used Landsat MSS and Landsat TM/ETM remote sensing data to assess changes in oasis scale and water availability with reference to differing water management practices in the Manas River Basin of north-western China from 1975 to 2015. We used the water-heat balance index H-0 to determine oasis stability over time and constructed a suitable-scale calculation model for arid and semi-arid regions to assess the suitable development scale and cultivated land area in the study area. The implementation of water-saving technology in 2000 effectively improved the utilization efficiency of water resources and accelerated the formation of artificial oases; these expanded by 3873.3 km(2) while natural oasis area was reduced by 3485.0 km(2). The oasis stability index H-0 was less than the critical stability index of 0.5 throughout the study period, implying that these areas were in a metastable state and unsuitable for further development. Therefore, in order to improve oasis stability, both scale and agricultural area should be further controlled. At present, actual oasis scale exceeds appropriate scale by 1.1 times and agricultural area exceeds suitable area by 2.5 times. To ensure the stability of the oasis, its area should be maintained at 3942.28-4481.06 km(2) and the cultivated land should be maintained at 1576.91-1792.42 km(2). (c) 2019 Elsevier B.V. All rights reserved.
机译：现代节水灌溉技术扩大了中国干旱和半干旱地区的农业绿洲规模。在这项研究中，我们使用Landsat MSS和Landsat TM / ETM遥感数据，参考了1975年至2015年中国西北部玛纳斯河流域的不同水资源管理实践，评估了绿洲规模和可用水量的变化。水热平衡指数H-0来确定绿洲在一段时间内的稳定性，并为干旱和半干旱地区建立了合适规模的计算模型，以评估研究区域的合适发展规模和耕地面积。 2000年节水技术的实施有效提高了水资源的利用效率，加快了人工绿洲的形成；这些区域扩大了3873.3 km（2），而自然绿洲面积减少了3485.0 km（2）。在整个研究期间，绿洲稳定指数H-0小于临界稳定指数0.5，这表明这些区域处于亚稳态，不适合进一步开发。因此，为了提高绿洲的稳定性，应进一步控制规模和农业面积。目前，实际绿洲规模超过适宜规模的1.1倍，农业面积超过适宜面积的2.5倍。为确保绿洲的稳定性，其面积应保持在3942.28-4481.06 km（2），耕地应保持在1576.91-1792.42 km（2）。 （c）2019 Elsevier B.V.保留所有权利。

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