河北平原区土壤水分空间变异特征研究
发布时间：2019-03-02 11:44
【摘要】：以河北平原区望都灌溉试验站为例,选取210m×210m的正方形田块进行试验,在该范围内布置64个测点,分别测量0~30、30~50、50~80cm三个深度的土壤含水率信息。利用经典统计和地统计方法分析了田间土壤含水率的空间变异结构,并采用协同克里格插值技术得到了该区域土壤含水率的空间分布状况。结果表明,0~30cm土层及50~80cm土层的土壤含水率具有中等空间相关性,其相关距离分别为66.4、75.7m,而30~50cm土层表现出了强烈的空间相关性,相关距离为88.2m,研究结果可为实现灌区精准灌溉和土壤墒情预测提供科学的理论指导。
[Abstract]:Taking Wangdu irrigation test station in Hebei plain as an example, the square field with 210m 脳 210m was selected to carry out the experiment. Within this range, 64 measuring points were arranged to measure the soil moisture content information at three depths of 0 ~ 30, 30 ~ 50 and 50 ~ 80 cm, respectively. The spatial variation structure of soil moisture content in the field was analyzed by means of classical and geostatistical methods, and the spatial distribution of soil moisture content in the region was obtained by using collaborative Kriging interpolation technique. The results showed that the soil moisture content of 0~30cm soil layer and 50~80cm soil layer had moderate spatial correlation, and the correlation distance was 66.4 m and 75.7 m respectively, while that of 30~50cm soil layer showed strong spatial correlation, the correlation distance was 88.2 m, and the correlation distance of 30~50cm soil layer was 88.2 m. The results can provide scientific theoretical guidance for accurate irrigation and soil moisture prediction in irrigation districts.
【作者单位】： 河北农业大学城乡建设学院;保定市水利局;
【基金】：河北农业大学青年科学基金(QN201319)
【分类号】：S152.7
，
本文编号：2433020
[Abstract]:Taking Wangdu irrigation test station in Hebei plain as an example, the square field with 210m 脳 210m was selected to carry out the experiment. Within this range, 64 measuring points were arranged to measure the soil moisture content information at three depths of 0 ~ 30, 30 ~ 50 and 50 ~ 80 cm, respectively. The spatial variation structure of soil moisture content in the field was analyzed by means of classical and geostatistical methods, and the spatial distribution of soil moisture content in the region was obtained by using collaborative Kriging interpolation technique. The results showed that the soil moisture content of 0~30cm soil layer and 50~80cm soil layer had moderate spatial correlation, and the correlation distance was 66.4 m and 75.7 m respectively, while that of 30~50cm soil layer showed strong spatial correlation, the correlation distance was 88.2 m, and the correlation distance of 30~50cm soil layer was 88.2 m. The results can provide scientific theoretical guidance for accurate irrigation and soil moisture prediction in irrigation districts.
【作者单位】： 河北农业大学城乡建设学院;保定市水利局;
【基金】：河北农业大学青年科学基金(QN201319)
【分类号】：S152.7
，
本文编号：2433020
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