基于Markov链地统计模型的区域土壤性质研究进展
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国家自然科学基金项目(40871105)和中国科学院知识创新工程重大项目(KSCX1-YW-09-05)资助


Markov-chain-based geostatistics simulation for regional soil hydraulic properties estimation: A review
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    摘要:

    土壤水力学性质的空间变异对于区域土壤水分溶质循环模拟研究至关重要。基于Markov链的条件模拟是一种能融合多源信息技术的地统计学模拟方法,与传统插值法和基于变异函数的条件模拟相比有诸多优势。目前,该方法在土壤水力学性质空间变异性领域的研究并未全面展开。实现区域土壤水力学模型参数的随机模拟,对于实现区域土壤水分运动和溶质运移的随机模拟,分析土壤水力学性质空间变异性对土壤水分运动和溶质运移模拟结果的影响,特别是参数采样点变化对土壤水分运动和溶质运移结果影响的不确定性等研究都有重要意义。本文旨在综述基于Markov链的地统计学模拟在土壤学相关领域的研究进展,以期为区域模拟中面临的参数获取难题提供帮助,为区域农业生产管理,水分高效利用,农田生态环境保护提供科学依据。

    Abstract:

    Spatial variability of soil hydraulic properties is critical for regional soil moisture simulation. Condition simulation based on Markov chain is a geostatistical simulation method using multiple information sources, and has several advantages comparing to the traditional interpolation and variogram-based conditional simulation. At present, the method in the research of soil hydraulic properties spatial variability is in need of further research. The achievement in regional hydraulic parameters is of great importance for stochastic simulation of soil water and solute transport, impacts of soil hydraulic properties spatial variability on soil moisture movement and solute simulation, especially for the uncertainty of sample sites variation on the simulation results of soil moisture movement and solute transport. This paper gave a review of Markov-chain-based geostatistical simulation in soil science and related fields in order to solve the parameters generating problem in regional simulation and to provide scientific support for regional agricultural management, efficient water use, and agro- environment protection.

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王伟鹏,李晓鹏,刘建立.基于Markov链地统计模型的区域土壤性质研究进展[J].土壤,2012,44(1):10-16. WANG Wei-peng, LI Xiao-peng, LIU Jian-li. Markov-chain-based geostatistics simulation for regional soil hydraulic properties estimation: A review[J]. Soils,2012,44(1):10-16

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  • 在线发布日期: 2012-03-09
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