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| 丹江鹦鹉沟小流域土壤总氮空间变异特征研究 | |
| 引用本文： | 徐国策,李占斌,李鹏,刘晓君,高海东. 丹江鹦鹉沟小流域土壤总氮空间变异特征研究[J]. 水土保持学报, 2011, 25(5): 59-63 |
| 作者姓名： | 徐国策 李占斌 李鹏 刘晓君 高海东 |
| 作者单位： | 1. 中国科学院水利部水土保持研究所,陕西杨凌,712100 2. 中国科学院水利部水土保持研究所,陕西杨凌712100／西安理工大学西北水资源与环境生态教育部重点实验室,西安710048 3. 西安理工大学西北水资源与环境生态教育部重点实验室,西安,710048 |
| 基金项目： | 陕西省教育厅丹汉江水源区水土流失非点源污染过程与调控项目(09JS094); 国家自然科学基金“植被格局对坡沟水蚀过程调控机理研究项目”(41071182) |
| 摘 要： | 在丹江鹦鹉沟小流域利用典型样地取样法,进行土样采集,共选取78样点,测定土壤4个不同深度的养分含量。应用传统统计学和地统计学的方法,对不同深度土壤总氮含量进行了分析。结果表明：土壤总氮含量均值、最大值和最小值均表现为A1〉A2〉A3〉A4,随土壤深度的增加而降低。经Kriging插值分析,由A1到A4总氮分布逐渐由小的斑块向大的斑块转变,总氮变化范围逐渐变小,同时A1土壤总氮含量表现为农地〈栎树林〈菜地〈草地〈松林〈竹林。有机氮在总氮中占主要部分,其平均百分比高达90%以上。土壤碳氮比总体表现为农地小于林地。坡向与A1、A2和A4土壤总氮含量均呈显著相关,总氮含量表现为坡顶〈阳坡〈阴坡〈平地。 |
| 关 键 词： | 小流域 总氮 插值分析 碳氮比 |
Study on TN Spatial Variability of Yingwugou Small Watershed in Dan River |
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| XU Guo-ce,LI Zhan-bin,LI Peng,LIU Xiao-jun,GAO Hai-dong. Study on TN Spatial Variability of Yingwugou Small Watershed in Dan River[J]. Journal of Soil and Water Conservation, 2011, 25(5): 59-63 | |
| Authors: | XU Guo-ce LI Zhan-bin LI Peng LIU Xiao-jun GAO Hai-dong |
| Affiliation: | XU Guo-ce1,LI Zhan-bin1,2,LI Peng2,LIU Xiao-jun1,GAO Hai-dong1(1.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,2.Key Lab.of Northwest Water Resources and Environment Ecology of MOE,Xi'an University of Technology,Xi'an 710048) |
| Abstract: | By means of typical spot samples,78 soil spots were chosen in Yingwugou watershed.The contents of soil nutrient were determined for each soil sample of 4 different soil depths.Both traditional and geostatistics methods were applied to analyze TN in 4 different soil depths.The results indicated that TN contents(mean,maximum,minimum) were all A1>A2>A3>A4.With the increasing of depths,the TN content reduced.The Kriging interpolation shown that the TN from A1 to A4 changed from small patches to large patches an... |
| Keywords: | small watershed TN interpolation C/N |
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