基于综合质量影响指数的耕地土壤质量评价与分区  

Evaluation and zoning of cultivated soil quality based on index of compressive quality

作　　者：陈文欢 王湃[1] 熊昌盛 CHEN Wenhuan;WANG Pai;XIONG Changsheng(School of Politics and Public Administration,Hainan University,Hainan Haikou 570228,China)

机构地区：[1]海南大学政治与公共管理学院,海南海口570228

出　　处：《上海国土资源》2021年第3期77-84,共8页Shanghai Land & Resources

基　　金：国家自然科学基金项目(72004049);教育部人文社会科学基金项目(20XJCZH009);海南省自然科学基金高层次人才项目(2019RC016,2019RC025,2019RC122)。

摘　　要：为了促进区域耕地资源合理、安全利用,综合耕地土壤及农作物重金属污染情况进行耕地土壤质量评价,根据结果进行分区管控。本文选取海南省儋州市作为研究区域,采用空间插值和单因子污染指数法分析土壤和水稻中Cd、Hg、As、Pb四种重金属的基本特征;采用土壤—水稻系统综合质量影响指数(IICQ)对耕地土壤质量进行综合评价与分区划定。结果表明研究区土壤的主要污染物是As和Cd,而水稻的主要污染物是Cd和Pb;采用IICQ评价法得到研究区仅有11.27%的耕地处于清洁状态;基于IICQ结果可将研究区划分为安全、基本安全、低风险、中风险和高风险5个综合分区,并提出了针对性的分区管控建议。基于IICQ的耕地土壤重金属评价结果相对更为全面和客观,其分区方案与管控措施也更具针对性。In this study,the quality of cultivated land soil and heavy metal pollution of crops were evaluated comprehensively,and the results were used for regional management and control to promote the rational and safe utilization of cultivated land resources.Danzhou city of the Hainan province was used as the study area,and the basic characteristics of Cd,Hg,As,and Pb in soil and rice were analyzed via spatial interpolation and the single factor pollution index method.In addition,the comprehensive quality impact index(IICQ)of the soil-rice system was used to evaluate the quality of cultivated land.The results show that the main soil and rice pollutants in the study area were As and Cd,and Cd and Pb,respectively.The IICQ evaluation method revealed that only 11.27%of the cultivated land in the study area is in a clean state.Using the IICQ results,the study area was divided into five comprehensive zones:safety,basic safety,low-risk,medium risk,and high-risk.On this basis,measures for the management and control of districts were proposed.Using the IICQ to evaluate the heavy metals in cultivated soil provides comprehensive and objective results,targeted zoning plans,and management measures.

关 键 词：重金属 耕地土壤质量评价 综合质量影响指数 分区管控 

分 类 号：X822.1[环境科学与工程—环境工程]