摘要
西南典型岩溶区因碳酸盐岩广泛分布,成为重金属镉(Cd)地质高背景集中区,耕地土壤Cd超标及“土壤-水稻”系统Cd迁移问题威胁着岩溶区农产品质量安全与农业可持续发展,相关研究已成为土壤环境领域的重点方向。基于国内外相关文献,系统综述了该区域耕地土壤Cd累积特征、土壤-水稻系统Cd迁移机制及耕地土壤Cd输入-输出规律,并重点梳理水稻秸秆资源化利用路径与风险管控策略,为典型岩溶区耕地土壤Cd污染防治、农产品质量安全及农业废弃物资源化利用提供理论依据与技术参考。
The typical karst regions in Southwest China,due to the extensive distribution of carbonate rocks,has become a concentrated area with high geological background levels of the heavy metal cadmium(Cd).The excessive cadmium content in cultivated soil and the problem of cadmium migration in the“soil-rice”system pose threats to the quality of agricultural products and the sustainable development of agriculture in karst areas.Relevant research has become a key focus in the field of soil environment.Based on a comprehensive review of domestic and international literature,the characteristics of Cd accumulation in cultivated soils,the migration mechanisms of Cd in the soil-rice system,and the patterns of Cd input-output in cultivated soils within this area were systematically summarized.In addition,great importance was attached to the resource utilization pathways of rice straw and corresponding risk management strategies,aiming to provide a theoretical basis and technical references for controllingCd pollution in cultivated soils,ensuring agricultural product safety,and promoting the resource utilization of agricultural waste in typical karst region.
作者
赵盈丽
薛飞
霍洪鈃
龙玉梅
苏丽丽
张荣海
周永信
ZHAO Yingli;XUE Fei;HUO Hongxing;LONG Yumeil;SU Lili;ZHANG Ronghai;ZHOU Yongxin(Guangxi Bohuan Environmental Consulting Services Co.,Ltd.,Nanning,Guangxi 530000,China;Guangxi Bossco Environmental Technology Co.,Ltd.,Nanning,Guangxi 530000,China;Technology Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area,Ministry of Natural Resources,Nanning,Guangxi 530028,China;Natural Resources Ecological Restoration Center of Guangxi Zhuang Autonomous Region,Nanning,Guangxi 530028,China)
出处
《四川环境》
2025年第6期76-84,共9页
Sichuan Environment
基金
中央引导地方科技发展资金项目(桂科ZY24212039)
南方石山地区矿山地质环境修复工程技术创新中心开放课题(NFSS2023017)。
关键词
岩溶区
镉
作物移除
水稻秸秆
资源化
Karst region
cadmium
crop removal
rice straw
resource utilization
