[1]刘鑫,毕华兴,李笑吟,等.晋西黄土区土壤水分时空异质性分析[J].水土保持研究,2006,13(06):51-54.
　LIU Xin,BI Hua-xing,LI Xiao-yin,et al.Study on Temporal and Spatial Heterogeneity of Soil Moisture Using Geological Statistics Method on Loess Plateau[J].Research of Soil and Water Conservation,2006,13(06):51-54.
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晋西黄土区土壤水分时空异质性分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 13 期数: 2006年06期 页码: 51-54 栏目: 出版日期: 1900-01-01
Title:
Study on Temporal and Spatial Heterogeneity of Soil Moisture Using Geological Statistics Method on Loess Plateau
作者:
刘鑫1, 毕华兴1,2, 李笑吟1, 李俊1, 郭孟霞1, 林靓靓1, 郭超颖1
1. 北京林业大学, 北京, 100083;
2. 水土保持与荒漠化防治教育部重点实验室, 北京, 100083
Author(s):
LIU Xin1, BI Hua-xing1,2, LI Xiao-yin1, LI Jun1, GUO Meng-xia1, LIN Liang-liang1, GUO Chao-ying1
1. Beijing Forestry University;
2. Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China
关键词:
土壤水分; 变异函数; 克立格插值; 交叉检验; 黄土区
Keywords:
soil moisture; vary function; Kriging Interpolating; cross-validation; Loess Plateau
分类号:
S152.7
摘要:
选择山西吉县蔡家川流域典型坡面，应用同一尺度（20 m×20 m）取样方法机械布设土壤水分监测点（313个），用TDR水分测定仪测定土壤水分（测定时间：2005年，分两个季节：4月和8月；土壤剖面分两个层次：0~30cm和30~60 cm），基于kriging插值的方法生成了研究区土壤水分空间分布图，并结合观测季土壤水分的时空分布状况，研究土壤水分在空间和时间上分布的随机性和结构性特征。研究结果表明：4月份0~30 cm土层土壤平均含水量低于30~60 cm土层，土壤水分变异系数高于30~60 cm土层，而8月份0~30 cm土层土壤平均含水量明显高于30~60 cm土层，土壤水分变异系数高于30~60 cm土层；4月、8月表层土壤水分含量基本相当，而底层土壤水分含量8月明显低于4月；8月土壤水分的空间异质性程度小于4月；4月份0~30 cm3、0~60 cm土壤水分含量多集中于10~15%之间，而8月份0~30 cm土多集中于10~15%之间，而30~60 cm土壤水分均低于10%，生长初期土壤水分能支持植物生长的需要，而生长旺季植被的耗水明显增强，从土壤中吸收的水分明显增加。
Abstract:
Taking typical slope in the Caijiachuan watershed as an example on Loess Plateau of China,the analysis of the spatial distribution of soil moisture was focused on using Kriging interpolating method and then the temporal and spatial heterogeneity of soil moisture was studied.In research area,313 soil moisture sites were arranged on slope at same scale(20 m×20 m) and then soil moisture was detected by TRIME-TDR(two seasons: dry and rain;two layers:0～30 cm and 30～60 cm).The results show that: the 0～30 cm soil moisture is lower than 30～60 cm and it has a high variation coefficient in April.In August,the 0～30 cm soil moisture is higher than the 30～60 cm soil depth and also has a greater variation coefficient;the surface layer and bottom layer has a same soil moisture but in August the spatial heterogeneity has no obviously change than April;The average soil moisture in different depth of soil profile is about 10%～15% in April.While the surface layer soil moisture is 10%～15% but bottom layer lower than 10%.It is shown that the soil moisture is enough to provide the plant growth in initial stage.but it cost more water when the plant growth best.

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备注/Memo

收稿日期:2005-12-15。
基金项目:973项目“森林植被调控区域农业水土资源与环境的尺度辨析与转换（2002CB111503）”；教育部重大项目“北方退耕还林区水土保持型植被恢复与重建技术研究（10407）”共同资助
作者简介:刘鑫（1982- ），男，内蒙古包头人，硕士研究生，主要从事林业生态方面的研究.
通讯作者:毕华兴(1969- ) , 男, 北京林业大学水土保持学院副教授, 主要从事森林水文和地理信息系统的研究.

更新日期/Last Update: 1900-01-01