土地质量地球化学评价中评价单元的划分——以宣恩县晓关乡为例  

Division of Evaluation Units in Land Quality Geochemical Assessment-A Case Study of Xiaoguan Town,Xuan'en County

作　　者：吴冬妹 

机构地区：[1]湖北省地质科学研究院,湖北武汉430034

出　　处：《资源环境与工程》2017年第5期558-562,共5页Resources Environment & Engineering

摘　　要：土地质量地球化学评价工作中评价单元是最基础的评价单位,对工作区评价单元进行划分是核心内容。以宣恩县晓关乡为例,采用评价区的土地利用现状图和地质背景图相叠加为主要方法,并按照采样单元格进行进一步分割和合并,能更合理真实地反映评价区的土地地球化学质量,为土地规划和农业种植结构调整提供准确的地球化学依据。In geochemical assessment of land quality,the evaluation unit is the most basic evaluation unit,and the work area evaluation unit division is the core content. In this paper,Xiaoguan Town,Xuan＇en County,as an example,used that the present landuse map and the geological background map of the evaluation area are superimposed as the main method,and in accordance with the sampling cell for further segmentation and merging to reflect more rationally and truthfully the land geochemical quality of the evaluation area,and to provide accurate geochemical basis for land planning and agricultural planting structure adjustment.

关 键 词：评价单元 地质界线 土地质量 图斑 宣恩晓关乡 

分 类 号：S159[农业科学—土壤学]