| 丹江典型小流域土壤有效铜分布规律 |
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| 引用本文： | 姚京威,李占斌,徐国策,张铁钢,刘晓君,杨媛媛.丹江典型小流域土壤有效铜分布规律[J].水土保持通报,2016,36(2):239-243,249. |
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| 作者姓名： | 姚京威 李占斌 徐国策 张铁钢 刘晓君 杨媛媛 |
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| 作者单位： | 1. 西安理工大学西北旱区生态水利工程国家重点实验室培育基地,陕西西安,710048;2. 西安理工大学西北旱区生态水利工程国家重点实验室培育基地,陕西西安710048;中国科学院水利部水土保持研究所,陕西杨凌712100;3. 中国科学院水利部水土保持研究所,陕西杨凌,712100 |
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| 基金项目： | 国家自然科学基金项目"土石山区坡面水沙调控对土壤氮素迁移的作用机制研究"(41401316),"黄土区退耕生态系统植被根系行为特征与土壤水资源响应"(41271290);中国博士后科学基金项目(2014M562440);陕西省教育厅重点实验室科研计划项目(15JS065) |
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| 摘 要： | 目的]研究丹江中游典型小流域土壤有效铜在不同土层深度、土地利用类型以及地形地貌因子下的分布规律,以期为该流域土地管理提供科学依据。方法]应用地统计学和空间分析的方法对流域野外采样数据进行分析。结果](1)取样区土壤有效铜均值为0.743mg/kg,土壤有效铜含量随土层深度的增加而降低;(2)不同土地利用类型下土壤有效铜含量在0.289~2.043mg/kg之间且土壤有效铜含量总体处于较低范围;(3)不同土壤深度下土壤有效铜含量均与海拔呈负相关,而与坡度无相关性。结论]结构性因素导致土壤有效铜分布呈现出强的空间依赖性;而施肥状况、耕作措施、种植制度等各类人为活动的影响又使得随机性因素增加,最终使得研究区域内土壤有效铜含量总体上呈带状分布格局。
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| 关 键 词： | 土壤有效铜 土地利用 地形地貌 小流域 丹江 |
| 收稿时间： | 2015/3/24 0:00:00 |
| 修稿时间： | 2015/6/18 0:00:00 |
Distribution of Soil Available Copper in Small Typical Watershed of Danjiang River |
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| YAO Jingwei,LI Zhanbin,XU Guoce,ZHANG Tiegang,LIU Xiaojun and YANG Yuanyuan.Distribution of Soil Available Copper in Small Typical Watershed of Danjiang River[J].Bulletin of Soil and Water Conservation,2016,36(2):239-243,249. |
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| Authors: | YAO Jingwei LI Zhanbin XU Guoce ZHANG Tiegang LIU Xiaojun and YANG Yuanyuan |
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| Institution: | State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area;Xi''an University of Technology, Xi''an, Shaanxi 710048, China,State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area;Xi''an University of Technology, Xi''an, Shaanxi 710048, China;Institite of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China,State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area;Xi''an University of Technology, Xi''an, Shaanxi 710048, China,State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area;Xi''an University of Technology, Xi''an, Shaanxi 710048, China,Institite of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China and State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area;Xi''an University of Technology, Xi''an, Shaanxi 710048, China |
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| Abstract: | Objective] Distribution characteristics of soil available copper under different depths, land use patterns and topography factors at Danjiang River basin were studied for watershed land management. Methods] Spatial analysis method of geostatistics was used to analyze the basin field data. Results] (1) The mean value of soil available copper content was 0.743 mg/kg and decreased with the soil depth in whole research area. (2) The value of soil available copper content was comparatively in an overall low level, ranged from 0.289~2.043 mg/kg for all land use patterns. (3) Soil available copper content had negative correlation with elevation, no obvious correlation was found with slope gradient. Conclusion] It is structural factors that led to the strong spatial dependence of soil available copper, and human activity, like fertilization, cultivation and planting, etc, was the stochastic factor. Both of them make the soil available copper content distributed in a zonal pattern. |
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| Keywords: | soil available copper land use landform small watershed Danjiang River |
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