| 引用本文: | 张志华,郭加伟,桑玉强,等.太行山南麓鱼鳞坑工程对坡面土壤水分空间变异的影响[J].灌溉排水学报,0,():-. |
| ZHANG Zhihua,GUO Jiawei,SANG Yuqiang,et al.太行山南麓鱼鳞坑工程对坡面土壤水分空间变异的影响[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】鱼鳞坑工程是干旱半干旱地区为提高土壤保水蓄水能力而进行的坡面造林整地工程,该工程会对坡面土壤水分空间异质性产生影响。【方法】该研究以太行山南麓实施鱼鳞坑工程坡面为研究对象,以自然坡面为对照,分析鱼鳞坑对坡面土壤水分空间异质性的影响。【结果】研究结果表明：(1)相较于自然坡面,鱼鳞坑工程可有效改善华北石质山区土壤水分状况,增加含水量,减小变异系数,提高结构因素占空间变异的比例；(2)无论在降雨还是干旱条件下,自然坡面土壤水分从坡上到坡下呈逐渐减小的带状分布,而鱼鳞坑坡面土壤水分在干旱条件下则呈斑块状分布,离散程度较高。(3)海拔和砾石含量是影响坡面水分空间异质性的主要因素。【结论】鱼磷坑工程通过改变下垫面微地形改善土壤保水性能,对土壤水分空间异质性产生重要影响。 |
| 关键词: 土壤水分；空间异质性；鱼鳞坑工程；地统计学；冗余分析 |
| DOI： |
| 分类号:S152.7 |
| 基金项目:国家自然科学基金 |
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| Effect of fish-scale pit engineering on the spatial variability of soil moisture at hillslope scale in south of Taihang mountain |
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ZHANG Zhihua, GUO Jiawei, SANG Yuqiang, WANG Decai, YANG Liu, ZHANG Jinhao, CHEN Nannan, YANG Xitian
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College of Forestry,Henan Agricultural University,Henan Zhengzhou,450002
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| Abstract: |
| 【Objective】Fish-scale pit engineering is a slope afforestation and land preparation project, which in order to improve soil water storage capacity in arid and semi-arid areas. This project have important influences on the spatial heterogeneity of soil moisture.【Method】 In this study, we chose two hillslopes to study the impact of Fish-scale pit on spatial heterogeneity of soil moisture. One has implemented the Fish-scale pit project, and the other is a natural slope. 【Result】 The results showed that: (1) Compared with the natural slope surface, the fish-scale pit engineering can effectively improve the soil water content, increase the water content, reduce the coefficient of variation, and increase the proportion of structural factors in the spatial variation in the rocky mountainous area of North China;(2) Under both rainfall and drought conditions, soil moisture on the natural slope showed a gradually decreasing zonal distribution from top to bottom of the slope, while soil moisture on the Fishscale Pit slope showed a patchy distribution with a high degree of dispersion under drought conditions.(3) Altitude and gravel content are the main factors affecting spatial heterogeneity of slope water.【Conclusion】 Fish-phosphorus pit engineering can improve soil water retention performance by changing the underlying surface microtopography, and has an important effect on soil water spatial heterogeneity. |
| Key words: soils moisture; spatial variability; fish-scale pit engineering; geostatistical analysis; redundancy analysis |
