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耕地质量地球化学评价及应用研究——以重庆市荣昌区为例
引用本文:鲍丽然,李瑜,贾中民,严明书,邓海.耕地质量地球化学评价及应用研究——以重庆市荣昌区为例[J].地球与环境,2018,46(1):96-105.
作者姓名:鲍丽然  李瑜  贾中民  严明书  邓海
作者单位:重庆市地质矿产勘查开发局川东南地质大队重庆土地质量地质调查重点实验室;
基金项目:重庆市国土房管科技计划项目(KJ-2015009)。
摘    要:基于Arcgis平台,以耕地图斑为评价单元,对重庆市荣昌区耕地质量进行了地球化学评价及其应用研究。结果表明,研究区耕地土壤质量较好,地球化学等级以中等为主,占耕地总面积的74.44%,优质和良好等级占24%。土壤养分综合等级以中等为主,有机质、氧化钙和磷元素较缺乏,钾、硫、锌等多种元素较丰富。土壤环境质量总体较好,清洁和轻微污染区面积较大,轻度至重度污染区不足1%,土壤污染主要由Cd元素引起。耕地质量地球化学评价可广泛应用于耕地分等定级、基本农田划定、土地整治和农业生产活动中。

关 键 词:耕地图斑  地球化学评价  荣昌区  应用
收稿时间:2017/4/1 0:00:00
修稿时间:2017/5/27 0:00:00

Geochemical Assessment and Applications of Cultivated Land-Taking Rongchang District, Chongqing City, China as an Example
BAO Liran,LI Yu,JIA Zhongmin,YAN Mingshu,DENG Hai.Geochemical Assessment and Applications of Cultivated Land-Taking Rongchang District, Chongqing City, China as an Example[J].Earth and Environment,2018,46(1):96-105.
Authors:BAO Liran  LI Yu  JIA Zhongmin  YAN Mingshu  DENG Hai
Institution:Southeast Sichuan Geological Group, Chongqing Bureau of Geology and Minerals Exploration, Chongqing Key Laboratory of Land Quality Geological Survey, Chongqing 400038, China
Abstract:Based on Arcgis platform, this paper evaluated geochemical grades of cultivated land of Rongchang District, Chongqing City, China and discussed its applications. Results show that the quality of cultivated land is in good condition, with medium geochemical grade accounting for 74.44% of the total area and good-excellent grade accounting for 24%. Integrated nutrient level is mainly medium, in lack of organic matter, calcium oxide and phosphorus, and rich in potassium, sulfur, zinc and other elements. The soil environment quality is generally good, and the area of clean and slightly polluted cultivated area is larger. The mild to severe polluted is less than 1% which is mainly caused by Cd. The geochemical evaluation of cultivated land quality can be widely used in grading of cultivated land, delimitation of basic farmland, land improvement and agricultural production.
Keywords:cultivated land map  geochemical grade  Rongchang District
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