徐丹,刘昌华,蔡太义,张世恩.农田土壤有机质和全氮三维空间分布特征研究[J].农业机械学报,2015,46(12):157-163.
Xu Dan,Liu Changhua,Cai Taiyi,Zhang Shien.3D Spatial Distribution Characteristics of Soil Organic Matter and Total Nitrogen in Farmland[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(12):157-163.
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农田土壤有机质和全氮三维空间分布特征研究   [下载全文]
3D Spatial Distribution Characteristics of Soil Organic Matter and Total Nitrogen in Farmland   [Download Pdf][in English]
投稿时间:2015-09-14  
DOI:10.6041/j.issn.1000-1298.2015.12.022
中文关键词:  土壤有机质  全氮  三维模拟  空间分布  插值方法
基金项目:国家自然科学基金资助项目(41371133)
作者单位
徐丹 河南理工大学 
刘昌华 河南理工大学 
蔡太义 河南理工大学
中国科学院南京土壤研究所 
张世恩 郑煤集团芦沟煤矿 
中文摘要:以河南省新郑市为研究区,分别采用三维克里格(Kriging)插值法和三维反距离加权(IDW)插值法模拟不同深度土壤有机质和全氮含量的三维空间分布特征,并采用交叉验证法,比较2种三维空间插值方法的预测精度。研究表明,有机质和全氮沿不同土层深度(0~20 cm、20~40 cm、40~60 cm)均表现出明显的空间分布差异,3种深度土壤有机质含量的平均值变化范围为11.31~15.48 g/kg,全氮的变化范围为0.48~0.79 g/kg,均随土层加深而降低;土壤有机质和全氮的三维空间分布表达的信息量更加丰富,可直观展示任意土体切面的养分含量分布信息;通过三维克里格方法得到的有机质插值结果的预测精度高于反距离加权法,全氮亦然,三维克里格插值法更能真实反映土壤养分的三维空间分布特征。
Xu Dan  Liu Changhua  Cai Taiyi  Zhang Shien
Henan Polytechnic University,Henan Polytechnic University,Henan Polytechnic University;Institute of Soil Science, Chinese Academy of Sciences and Lugou Coal Mine, Zhengzhou Coal Industry (Group)
Key Words:Soil organic matter  Total nitrogen  Three-dimensional simulation  Spatial distribution  Interpolation methods
Abstract:The three-dimensional (3D) spatial distribution characteristics of farmlands’ soil organic matter and total nitrogen were revealed in Xinzheng City, and the related technical methods and train of thought were provided. The methods of 3D Kriging interpolation and 3D inverse distance weighted interpolation were comprehensively used to simulate the 3D spatial distribution characteristics of soil organic matter and total nitrogen content in different depths, and their prediction accuracies were compared by using the cross validation method. The results showed that soil organic matter and total nitrogen had significantly different spatial distribution difference along the different soil depths (0~20 cm,20~40 cm,40~60 cm), the mean range of soil organic matter content in three depths varied from 11.31 g/kg to 15.48 g/kg, and the mean range of soil total nitrogen content was 0.48~0.79 g/kg, and both of them were decreased with the increase of soil depth. The amount of information that 3D spatial distribution of soil organic matter and total nitrogen expressed was more abundant, which was able to directly show the distribution information of the nutrient content in soil arbitrary section. The prediction accuracy of interpolation results of organic matter obtained through 3D Kriging method was higher than that obtained through inverse distance weighting method, and the result of total nitrogen was the same. 3D Kriging interpolation method could more veritably reflect the 3D spatial distribution characteristics of soil nutrients.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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