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[1]程先富,孙鸿鹄,张国耀,等.大别山区龙潭小流域土壤全氮和有效磷的空间变异及条件模拟[J].应用与环境生物学报,2014,20(02):281-285.[doi:10.3724/SP.J.1145.2014.00281]
 CHENG Xianfu,SUN Honghu,ZHANG Guoyao,et al.Spatial variability and conditional simulation of soil total nitrogen and available phosphorus in Longtan watershed of the Dabieshan Mountain, China[J].Chinese Journal of Applied & Environmental Biology,2014,20(02):281-285.[doi:10.3724/SP.J.1145.2014.00281]
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大别山区龙潭小流域土壤全氮和有效磷的空间变异及条件模拟()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
20卷
期数:
2014年02期
页码:
281-285
栏目:
研究论文
出版日期:
2014-04-25

文章信息/Info

Title:
Spatial variability and conditional simulation of soil total nitrogen and available phosphorus in Longtan watershed of the Dabieshan Mountain, China
作者:
程先富 孙鸿鹄 张国耀 吕军 王传辉
1安徽师范大学国土资源与旅游学院 芜湖 241003 2安徽自然灾害过程与防控研究省级实验室 芜湖 241003
Author(s):
CHENG Xianfu SUN Honghu ZHANG Guoyao LV Jun WANG Chuanhui
1College of Territorial Resources and Tourism, Anhui Normal University, Wuhu 241003, China 2Anhui Key Laboratory of Natural Disaster Process and Prevention, Wuhu 241003, China
关键词:
土壤属性空间变异克里格条件模拟不确定性大别山区龙潭小流域
Keywords:
soil property spatial variability Kriging conditional simulation uncertainty Longtan watershed in Dabieshan Mountain
分类号:
S153.6
DOI:
10.3724/SP.J.1145.2014.00281
文献标志码:
A
摘要:
土壤属性的空间变异研究对于了解土壤的差异性具有重要意义. 运用普通克里格法和序贯高斯模拟方法对大别山区龙潭小流域土壤全氮和有效磷的空间分布进行估值和模拟. 结果表明:土壤全氮、有效磷的空间变异均属于中等程度变异,具有强烈的空间自相关,半方差函数拟合的模型均为指数模型,全氮变程为333 m,有效磷变程为474 m. 全氮含量主要分布在1.2-1.6 g kg-1之间,占总面积的34.96%,流域的中部和南部较高,北部、东部、西部较低;有效磷含量主要集中在60-100 mg kg-1之间,占总面积的42.17%,流域的西北和南部含量较高. 1 000次的序贯高斯模拟显示,普通克里格插值得到的土壤全氮、有效磷的空间分布整体较连续,具平滑效应,序贯高斯模拟的空间分布整体离散,波动性较强. 临界概率值为0.50时可以满足条件模拟的要求. 随机模拟能够较好地描述土壤属性空间分布的不确定性,为揭示区域土壤属性的空间结构特征提供了有力的工具.
Abstract:
To study on the spatial variability of soil properties for the understanding of the differences in soil is important. Using ordinary Kriging and sequential Gauss simulation methods, we calculated and simulated the spatial distribution of soil total nitrogen and available phosphorus in the Longtan watershed of the Dabieshan Mountain. The results showed that the spatial variability of soil total nitrogen and available phosphorus were moderate with strong spatial autocorrelation. Semivariogram was of exponential model, with total nitrogen variable range of 333 m and phosphorus variable range of 474 m. Total nitrogen content was mainly 1.2-1.6 g kg-1, accounting for 34.96% of the total area, higher in the central and southern watershed. Available phosphorus content was mainly 60-100 mg kg-1, accounting for 42.17% of the total area, comparatively higher in the northwestern and southern watershed. The 1 000 sequential Gauss simulation showed that the soil total nitrogen and available phosphorus obtained by ordinary Kriging spatial distributions was smooth, while the result from sequential Gauss simulation was relatively discrete with great volatility. The critical probability value of 0.50 can meet the conditional simulation requirement. Stochastic simulation can describe the spatial distribution of soil properties uncertainty and provide a powerful tool for spatial structure of regional soil attributes.

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相似文献/References:

[1]张国耀,程先富,鲍伟佳,等.小流域土壤有机质和全磷空间变异分析——以安徽省舒城县龙潭小流域为例[J].应用与环境生物学报,2011,17(02):169.[doi:10.3724/SP.J.1145.2011.00169]
 ZHANG Guoyao,CHENG Xianfu,BAO Weijia,et al.Spatial Variability of Soil Organic Matter and Total Phosphorus in Small Catchment Areas — A Case Study in the Longtan Small Catchment[J].Chinese Journal of Applied & Environmental Biology,2011,17(02):169.[doi:10.3724/SP.J.1145.2011.00169]

备注/Memo

备注/Memo:
国家自然科学基金项目(42171516)、教育部人文社会科学研究规划基金项目(12YJA790016)和高等学校博士学科点专项科研基金项目(20113424110002)资助
更新日期/Last Update: 2014-05-04