刘继龙,周延,付强,任高奇,马孝义,孙维敬.黑土区玉米地作物信息多重分形与多尺度相关特征研究[J].农业机械学报,2016,47(6):163-170,162.
Liu Jilong,Zhou Yan,Fu Qiang,Ren Gaoqi,Ma Xiaoyi,Sun Weijing.Multifractal and Multi-scale Correlation Characteristics of Crop Information of Corn Field in Black Soil Region[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(6):163-170,162.
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黑土区玉米地作物信息多重分形与多尺度相关特征研究   [下载全文]
Multifractal and Multi-scale Correlation Characteristics of Crop Information of Corn Field in Black Soil Region   [Download Pdf][in English]
投稿时间:2015-10-10  
DOI:10.6041/j.issn.1000-1298.2016.06.021
中文关键词:  黑土区  作物信息  多重分形  联合多重分形  时空变异性  多尺度
基金项目:国家自然科学基金项目(51409046)、东北农业大学青年才俊项目(14QC46)、黑龙江省博士后经费项目(LBH—Z11226)、东北农业大学博士启动基金项目(2012RCB47)和2016年东北农业大学大学生SIPT计划项目(201610224198)
作者单位
刘继龙 东北农业大学 
周延 东北农业大学 
付强 东北农业大学 
任高奇 东北农业大学 
马孝义 西北农林科技大学 
孙维敬 东北农业大学 
中文摘要:为揭示黑土区玉米地作物信息的时空变异机理,在东北农业大学香坊实验基地选取48m×48m区域,利用多重分形和联合多重分形理论,研究作物信息的多重分形特征、不同时间作物信息以及不同作物信息之间的多尺度相关特征。结果表明,黑土区玉米叶绿素含量的多重分形特征不明显,茎粗和株高的多重分形特征较明显。随时间变化,造成叶绿素含量、茎粗空间变异的局部信息有所差异,引起株高空间变异的局部信息一致,叶绿素含量、茎粗、株高的空间变异性分别先降后增、先降后增、逐渐减弱。单一尺度和多尺度上,不同时间叶绿素含量之间、茎粗之间、株高之间的相关程度均有明显差异;叶绿素含量之间、茎粗之间的相关程度排序均有所差异,株高之间的相关程度排序相同。随时间变化,单一尺度和多尺度上不同作物信息之间的相关程度均有明显差异,且相关程度均逐渐降低。与单一尺度相比,多尺度上,叶绿素含量之间、茎粗之间、不同作物信息之间的相关程度增大,株高之间的相关程度有增有降。
Liu Jilong  Zhou Yan  Fu Qiang  Ren Gaoqi  Ma Xiaoyi  Sun Weijing
Northeast Agricultural University,Northeast Agricultural University,Northeast Agricultural University,Northeast Agricultural University,Northwest A&F University and Northeast Agricultural University
Key Words:black soil region  crop information  multifraction  joint multifraction  spatial and temporal variability  multi-scale
Abstract:Quantitative expression of spatial and temporal variability of crop information is an important step to realize distributed control of water and soil resources in precise agriculture. In order to reveal spatial and temporal variability of crop information in corn field in black soil region, multifractal characteristics of crop information, multi-scale correlations between crop information of different sampling dates and the ones between different crop information were studied with multifractal and joint multifractal methods based on the results of experiments in 48m×48m field in Xiangfang Experimental Base of Northeast Agricultural University. The results showed that multifractal characteristic of corn chlorophyll content was not obvious, and stem diameter and plant height had obvious multifractal characteristics. As sampling date changed, the local information that caused spatial variability of chlorophyll content and stem diameter were different, the ones that caused spatial variability of plant height were the same, spatial variability intensity of chlorophyll content and stem diameter was firstly decreased and then increased, and that of plant height was reduced gradually. At the single scale and multi-scale, when sampling date was different, correlation degrees between chlorophyll contents were different, there was difference in correlation degrees between stem diameters, and correlation degrees between plant heights were different; there was difference in sorting of correlation degree of chlorophyll content, stem diameter and plant height. As sampling date changed, correlation degrees between different crop information at the single scale and multi scale were different, which were decreased gradually. Compared with research results at the single scale, the correlation degrees between chlorophyll contents were increased, the ones between stem diameters were enhanced, the ones between different crop information were augmented, and correlation degrees between plant heights were sometimes increased or decreased at multi-scale.

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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