黑土区田块尺度遥感精准管理分区

发布时间：2018-01-06 06:25

本文关键词：黑土区田块尺度遥感精准管理分区　出处：《遥感学报》2017年03期 　论文类型：期刊论文

【摘要】：基于格网采样与空间插值的精准管理分区方法精度高,但时效性差、成本高。本文以东北农垦地区红星农场农田为研究对象,提出一种基于遥感影像的精准管理分区方法:以裸土高空间分辨率遥感影像作为数据源,结合田间格网采样数据,基于裸土反射光谱特征与黑土主要理化性质的显著相关关系,运用面向对象分割、空间统计分析方法,对典型黑土区田块进行精准管理分区研究,并利用土壤理化性质和农作物生理参数,对分区结果进行评价。得出如下结论:(1)典型黑土区田块内部土壤养分含量空间变异显著;(2)基于裸土影像与面向对象的精准管理分区方法精度高,增强了分区之间的土壤养分与归一化植被指数(NDVI)差异性、分区内部各属性的一致性;(3)基于2015年4月1日和2015年5月20日单期影像分区和两期影像波段叠加(Layer stacking)分区,区间变异系数与区内变异系数之比分别为1.42、1.39和7.63,基于两期影像综合信息的分区结果显著优于基于单期影像分区;(4)基于裸土影像面向对象分割的精准管理分区方法时效性强、成本低、精度高。研究成果为田间变量施肥、发展精准农业、实现农业可持续发展提供依据。
[Abstract]:The precision management zoning method based on grid sampling and spatial interpolation has high precision but low timeliness and high cost. In this paper, a method of accurate management and partition based on remote sensing image is proposed. The high spatial resolution remote sensing image of bare soil is used as the data source, and the sampling data of field grid is combined. Based on the significant correlation between the reflectance spectrum characteristics of bare soil and the main physical and chemical properties of black soil, the method of object oriented segmentation and spatial statistical analysis was used to study the precision management zoning of typical black soil area. The physical and chemical properties of soil and the physiological parameters of crops were used to evaluate the results of the zonation. The conclusion is as follows: (1) the spatial variation of soil nutrient content in the typical black soil area is significant; (2) the precision management method based on bare soil image and object-oriented method has high precision, which enhances the difference between soil nutrient and normalized vegetation index (NDVI), and the consistency of each attribute within the zone; (3) based on the single-phase image partition on April 1st 2015 and May 20th 2015 and the two-phase image band superposition layer stackingpartition. The ratio of the interval coefficient of variation to the coefficient of variation in the region is 1.42 and 7.63, respectively. The partition results based on the comprehensive information of the two periods are significantly better than those based on the single phase image. 4) the precision management partition method based on the object oriented segmentation of bare soil image has the advantages of high efficiency, low cost and high precision. The research results provide the basis for the field variable fertilization, the development of precision agriculture and the realization of the sustainable development of agriculture.
【作者单位】：东北农业大学资源与环境学院;
【基金】：国家自然科学基金(编号:41501357) 黑龙江省普通高等学校新世纪优秀人才培养计划(编号:1254-NCET-002) 黑龙江省教育厅科学技术研究项目(编号:11551038)~~
【分类号】：S127;TP751
【正文快照】： 引用格式:刘焕军,邱政超,孟令华,付强,姜佰文,闫岩,徐梦园.2017.黑土区田块尺度遥感精准管理分区.遥感学报,21(3):470 478Liu H J,Qiu Z C,Meng L H,Fu Q,Jiang B W,Yan Y and Xu M Y.2017.Site-specific management zone of fieldscale based on remote sensing image in a

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