| 引用本文: | 孔晶晶,昝梅,张振东.新疆玛纳斯河流域蒸散发时空分布格局研究[J].灌溉排水学报,0,():-. |
| KONG Jingjing,ZAN Mei,ZHANG Zhendong.新疆玛纳斯河流域蒸散发时空分布格局研究[J].灌溉排水学报,0,():-. |
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| 新疆玛纳斯河流域蒸散发时空分布格局研究 |
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孔晶晶1, 昝梅1, 张振东2
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1.新疆师范大学 地理科学与旅游学院;2.山东师范大学地理与环境学院
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| 摘要: |
| 【目的】分析玛纳斯河流域基于MODIS数据的蒸散发时空分布特征及影响因素，为玛纳斯河流域的水资源分配、生态环境的保护、社会生产等方面提供参考。【方法】以玛纳斯河流域为研究区，对玛纳斯河流域近18年地表实际蒸散发的年际和年内时空变化规律用镶嵌、重采样、栅格计算及线性回归等方法进行了研究。【结果】不同土地利用的平均蒸散发量从大到小依次为林地（418.65 mm）>水域（302.36 mm）>耕地（257.32 mm）>未利用地（222.00 mm）>建设用地（218.10 mm）>草地（207.04 mm）。ET在夏季达到高峰，其次为春季、秋季，冬季最少；蒸散发趋势在季节尺度方面主要表现为冬季对年蒸散发变化趋势影响不大，但夏季对年蒸散发的影响比较突出。【结论】玛纳斯河流域多年ET均值在16.08～598.77 mm/a，表现出显著的空间差异性，整体上呈南部高、中部次之、北部最低，流域上中游高、下游低的分布格局。 |
| 关键词: 蒸散发;MOD16;时空格局;玛纳斯河流域 |
| DOI： |
| 分类号:170.4599 |
| 基金项目:新疆维吾尔自治区自然科学基金(2017D01A55)、新疆师范大学人文社会科学重点研究基地丝绸之路经济带城市发展研究中心招标课题(XJNURWJD062017B05) |
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| Study on the spatial and temporal pattern distribution of evapotranspiration in manas river basin, Xinjiang |
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KONG Jingjing1, ZAN Mei1, ZHANG Zhendong2
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1.School of Geographical Science and Tourism,Xinjiang Normal University;2.College of Geography and Environment,Shandong Normal University
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| Abstract: |
| Abstract:【Background】This paper takes the Manas River basin as the research area, which is the largest oasis agricultural reclamation area in Xinjiang and the fourth largest irrigated agricultural area in China, with high development of soil and water resources. Manas river basin is located in the north slope of Tianshan Mountain, dry climate, low rainfall, evaporation, diverse terrain, water is more precious, research focus of many scholars for the deployment of the basin water resources utilization, the change of precipitation, runoff, land use and ecological value of research, and the study of the basin evaporation is also imperfect. Evapotranspiration is an indispensable part in the water cycle, which is closely related to the coordination of water and heat elements and the relative balance of energy. Especially in arid and semi-arid areas where mountain, oasis and desert coexist, the variation of evapotranspiration has a great impact on the natural ecology and human activities in the basin. In addition an in-depth understanding of the spatial and temporal characteristics of evaporation in the Manas River basin has important guiding significance for water-saving irrigation and agricultural production in this region.【Objective】The study of the spatial and temporal distribution pattern of evapotranspiration in the Manas River Basin in recent years will have important reference value for the water resources allocation and use, ecological environment construction and protection, social production and life in the Manas River Basin.【METhod】Taking the Manas River basin as the research area. Based on 2000, 2005, 2010, 2015, 2018, five of the spatial resolution of 500 m MOD16 products and mETeorological data, with scales and seasonal scale respectively, analysis of the manas river basin ET time-space distribution characteristics and change tendency, reveals the variation characteristics of different land use types ET in the studied area, the analysis of the influence of temperature and precipitation of ET ,by means of mosaic, resample, grid calculation and linear regression, trend analyses and so on. It provides reference for the estimation of ecological water demand and rational allocation of water resources in this basin.【Result】The average ET value of the Manas River Basin for many years ranges from 16.08 to 598.77 mm/a. The average value of each season was 55.29 mm, 102.02 mm, 50.98 mm and 28.45 mm respectively. ET was the highest in summer, followed by spring and autumn, and the lowest in winter. The results of the research and analysis can indicate that the average evapotranspiration from different land uses is in order from woodland> water area> cultivated land> unused land> construction land> grassland. ET peaks in summer, followed by spring, autumn, and winter at least. The variation trend of evapotranspiration and precipitation is similar, and the correlation coefficient bETween them is 0.67, showing an overall trend of increase. There is a weak positive correlation bETween evapotranspiration and air temperature. 【Conclusion】Overall, showing significant spatial differences. the evapotranspiration trend is mainly manifested in summer led by evapotranspiration, and winter has a weaker effect on the annual evapotranspiration change trend. The overall distribution pattern is high in the middle, low in the south and north, high in the middle reaches of the basin, and low in the upper reaches.
Key words: evapotranspiration; MOD16; spatial and temporal pattern; Manas River Basin |
| Key words: Evaporation; MOD16; Spatial and temporal pattern; Manas river basin |
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