| 风力提水在南疆灌溉农业发展中的潜力评估 |
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| 引用本文： | 宋姝,牛俊.风力提水在南疆灌溉农业发展中的潜力评估[J].农业工程学报,2021,37(2):123-129. |
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| 作者姓名： | 宋姝 牛俊 |
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| 作者单位： | 中国农业大学中国农业水问题研究中心，北京 100083 |
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| 基金项目： | 国家自然科学基金国际（地区）合作与交流项目（51861125103）；国家自然科学基金面上项目（51679233） |
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| 摘 要： | 开采利用可再生能源,是未来区域可持续发展的重要支撑途径。风能作为一种有活力且经济效益更高的可再生能源,具有多种利用方式,风力提水技术便是其中之一。该研究通过对2000~2014年南疆地区风速及降水数据进行分析,采用两参数威布尔分布模型对南疆的风能资源进行评估。通过作物的蒸散发及有效降雨量计算南疆灌溉需水量,以探寻风能资源和灌溉需水量的时空分布及其变化规律。南疆地区平均风功率密度4月最大(25.14 W/m2),灌溉需水量与风功率的季节分布不匹配,最大出现在8月(9.02亿m3)。通过统计南疆5个地(州)的风力提水总量,计算其占非自流灌溉区内灌溉需水量的比例,进而得出克州最适宜建设风力提水工程,其风力提水满足率达68%以上。相应的风力提水潜力评估结果,为南疆农业节水灌溉和可持续发展提供一定的决策参考。
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| 关 键 词： | 灌溉 风能 蒸散发 风力提水 灌溉需水量 南疆 |
| 收稿时间： | 2020/8/22 0:00:00 |
| 修稿时间： | 2020/12/18 0:00:00 |
Potential assessment on wind-powered water pumping for irrigated agriculture in Southern Xinjiang |
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| Song Shu,Niu Jun.Potential assessment on wind-powered water pumping for irrigated agriculture in Southern Xinjiang[J].Transactions of the Chinese Society of Agricultural Engineering,2021,37(2):123-129. |
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| Authors: | Song Shu Niu Jun |
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| Institution: | Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China |
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| Abstract: | Abstract: Renewable energy has become a major supply way to support sustainable regional development in low-carbon energy economies. One kind of renewable energy, wind energy has widely been utilized with many approaches, including wind-powered water pumping. Southern Xinjiang is featured with abundant wind energy, complex terrain, low rainfall, and fragile ecological environment in the arid area of northwest China. Therefore, the irrigation agriculture is essential to crop production, as in-season rainfall is inadequate to water requirement. A wind-powered water pumping can effectively alleviate the shortage of water resources, while reduce the dependence on fossil energy in Southern Xinjiang. In this study, a systematic potential assessment was made on the wind-powered water pumping for irrigated agriculture in Southern Xinjiang, northwest China. a) Two-parameter Weibull distribution was employed to evaluate the wind sources in Southern Xinjiang for the period of 2000-2014, where the specific parameters was estimated by the least square. Then the data was effectively resampled using an ordinary Kriging interpolation on the platform of ArcGIS, thereby to obtain the distribution of wind power density in Southern Xinjiang. b) The evapotranspiration of regional crops and effective rainfall were utilized to calculate the actual requirement of irrigation water in Southern Xinjiang, further to examine the temporal and spatial distribution of required water resources. c) The total amount of wind-powered water was analyzed in the five regions of Southern Xinjiang, thereby to calculate the proportion to the requirement of irrigation water in the non-artesian irrigation area. As such, a potential assessment on wind energy was achieved for the application of wind powered water-pumping in different regions. The results were as follows: 1) The maximum wind power occurred in April in Southern Xinjiang, with the average density of 25.14 W/m2. It was found that Kizilsu Kirghiz and Bayingolin Mongol Autonomous Prefecture presented relatively richer wind resources, compared with other regions. 2) The largest requirement of irrigation water appeared in August, indicating that seasonal changes were closely related to the local cropping system. The high requirements of irrigation water per unit were located mainly in Aksu Prefecture and parts of northern Bayingolin Mongol Autonomous Prefecture, as well as in the northeast and southwest research regions. Considering the size of irrigation areas, the amount of irrigation water was large in Aksu and Kashgar Prefecture. 3) The effective time and the distribution of wind were used to compute the water requirement for agricultural irrigation, and the suitable area for the construction of wind pumping projects in the five prefectures in Southern Xinjiang. The satisfaction rate of wind pumping was obtained to reveal the potential of wind energy for irrigated agriculture in Southern Xinjiang. The Kizilsu Kirghiz Autonomous Prefecture was an optimal option to construct the wind-powered water pumping with high natural benefits. In addition, the economic benefits need to be further considered. The obtained knowledge on the potential of wind-powered water pumping can provide a scientific support to make water-saving irrigation strategies and policies for regional agricultural development in Southern Xinjiang of China. |
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| Keywords: | irrigation wind energy evapotranspiration wind-powered water pumping wind energy irrigation water requirement Southern Xinjiang |
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