黑河上游坡面尺度土壤贮水量的时间稳定性
发布时间：2018-07-20 08:55
【摘要】：利用土壤水分速测仪,获得黑河上游天老池流域2014年5-9月祁连圆柏林、灌木林、青海云杉林3个坡面0~60 cm土壤深度坡面土壤贮水量,通过时间稳定性分析,研究该区域坡面尺度的时间稳定性特征.结果表明:土壤贮水量的季节变化趋势与降雨动态基本一致,坡向和植被类型共同影响着土壤水分的空间分布.累积概率分析认为祁连圆柏林的时间稳定性最高.通过平均相对偏差、平均相对偏差的标准差、时间稳定性指数、平均绝对偏差误差确定了坡面土壤水分平均状态的代表性测点.3个坡面土壤贮水量的Spearman秩相关系数基本都在P0.01的水平上显著,具有强烈的时间稳定性,Spearman秩相关系数为分析区域土壤贮水量的时间稳定性分析提供了便捷途径.
[Abstract]:By using the soil moisture speedometer, the soil water storage on the slope with 0 ~ 60cm depth on Qilian round Berlin, shrub forest and Picea crassifolia forest was obtained from May to September 2014 in Tianlaochi Basin, upper reaches of Heihe River, and the time stability analysis was carried out. The temporal stability characteristics of slope scale in this area are studied. The results showed that the seasonal variation trend of soil water storage was basically consistent with rainfall dynamics, and slope direction and vegetation type affected the spatial distribution of soil water. The cumulative probability analysis shows that the Qilian circle Berlin has the highest time stability. Through the mean relative deviation, the standard deviation of the average relative deviation, the time stability index, The mean absolute deviation error determined the representative measuring points of the average soil water state on the slope. The Spearman rank correlation coefficient of the soil water storage on the three slopes was significant at the level of P0.01. The Spearman rank correlation coefficient with strong temporal stability provides a convenient way to analyze the temporal stability of regional soil water storage.
【作者单位】： 兰州大学生命科学学院;
【基金】：国家自然科学基金集成项目(91425301)
【分类号】：S152.7
本文编号：2132977
[Abstract]:By using the soil moisture speedometer, the soil water storage on the slope with 0 ~ 60cm depth on Qilian round Berlin, shrub forest and Picea crassifolia forest was obtained from May to September 2014 in Tianlaochi Basin, upper reaches of Heihe River, and the time stability analysis was carried out. The temporal stability characteristics of slope scale in this area are studied. The results showed that the seasonal variation trend of soil water storage was basically consistent with rainfall dynamics, and slope direction and vegetation type affected the spatial distribution of soil water. The cumulative probability analysis shows that the Qilian circle Berlin has the highest time stability. Through the mean relative deviation, the standard deviation of the average relative deviation, the time stability index, The mean absolute deviation error determined the representative measuring points of the average soil water state on the slope. The Spearman rank correlation coefficient of the soil water storage on the three slopes was significant at the level of P0.01. The Spearman rank correlation coefficient with strong temporal stability provides a convenient way to analyze the temporal stability of regional soil water storage.
【作者单位】： 兰州大学生命科学学院;
【基金】：国家自然科学基金集成项目(91425301)
【分类号】：S152.7
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1 信秀丽;张佳宝;朱安宁;;土壤水吸力空间分布规律的时间稳定性研究[J];农业工程学报;2008年05期
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，本文编号：2132977
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