Identification of saline risk area and sustainable optimum water allocation for Irrigated farmland in arid region

干旱区农田盐碱风险区识别与可持续优化水分配

• 批准号: 22380129
• 负责人: AKAE Takeo
• 金额: $ 11.98万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22380129/
• 关键词: 乾燥地; 灌漑; 塩分集積; 衛星画像; 蒸発量; 地表面温度; 最適用水配分; 塩類化; Landsat

(1)A model which can estimate evaporation only by maximum and minimum ground surface temperature (MST model) was developed. Spatial distribution of evaporation of Hetao Irrigation District, Inner Mongolia, China was estimated by satellite image and MST model and the results were validated.(2)Relationship between spatial distribution of saline area in the District and topological, geographical conditions was analyzed.(3)Based on the relationship between seasonal change of annual average and deviation of NDVI (Normalized Vegetation Index) obtained by MODIS image and the estimated evaporation, saline risk area was identified.(4)As constraints of linear programming, water balance based on estimated evaporation and salt balance of each sub region was considered, and drainage water quality of each sub region was specified by a leaching efficiency coefficient. Applying linear programming, optimal sustainable water allocation was determined. The results showed that improvement of conveyance efficiency is effective as measures for improvement of the irrigation and drainage system.

(1)开发了仅通过最高和最低地表温度来估算蒸发量的模型(MST模型)。利用卫星影像和MST模型估算了内蒙古河套灌区蒸发量的空间分布，并对结果进行了验证。(2)分析了区内盐碱地空间分布与拓扑、地理条件的关系。(3 )根据MODIS影像获得的NDVI(归一化植被指数)的年平均季节变化与偏差与预估蒸发量之间的关系，识别出盐碱地风险区。(4)作为线性规划的约束条件，基于水量平衡考虑了每个子区域的估计蒸发和盐平衡，并通过淋滤效率系数指定了每个子区域的排水水质。应用线性规划，确定了最佳的可持续水分配。结果表明，提高输送效率作为改善排灌系统的措施是有效的。

项目成果

Effect of soil water on soil temperature and salt in saline soil with undulate surface in Hetao Irrigation District

河套灌区地表起伏盐渍土土壤水分对土壤温度和盐分的影响

• 发表时间: 2010
• 期刊: Effect of soil water on soil temperature and salt in saline soil with undulate surface in Hetao Irrigation District
• 作者: Zhu Xue;Takeo Akae;Haibin Shi and Mari Ishida
• 通讯作者: Haibin Shi and Mari Ishida

衛星画像画素値の年平均と年分散を用いた土地被覆分析－中国内蒙古自治区河套灌区を事例として－

利用卫星图像像素值年均值和年方差进行土地覆盖分析——以中国内蒙古自治区河图关区为例——

• 作者: Xue Zhu;Takeo Akae;Xue Zhu and Takeo Akae;守田秀則・森啓輔・赤江剛夫
• 通讯作者: 守田秀則・森啓輔・赤江剛夫

Estimation of evaporation from saline soil in arid area

干旱地区盐渍土蒸发量的估算

• 发表时间: 2010
• 作者: Xue Zhu;Takeo Akae
• 通讯作者: Takeo Akae

Estimation of Evaporation from Drying Soil Column with Different Initial Soil Water Content by Maximum Soil Surface Temperature

用最高土壤表面温度估算不同初始土壤含水量的干土柱蒸发量

• 发表时间: 2013
• 期刊: IDRE Journal
• 作者: XUE Zhu;AKAE Takeo
• 通讯作者: AKAE Takeo

地表面温度と衛星画像データを用いた広域蒸発量の推定

利用地表温度和卫星图像数据估算大面积蒸发

• 发表时间: 2012
• 作者: Zhu Xue;Takeo Akae;Haibin Shi;Mari Ishida;赤江剛夫・Xue Zhu
• 通讯作者: 赤江剛夫・Xue Zhu