广西横州市岩溶与非岩溶区耕层土壤Zn通量特征  

Characteristics of Zn flux in cultivated soil layer in karst and non-karst areas of Hengzhou,Guangxi

作　　者：杨烨宇 李程 杨忠芳[4] 张起钻 王磊 邹胜章[1,2] 韦华周 莫佳蓉 YANG Ye-yu;LI Cheng;YANG Zhong-fang;ZHANG Qi-zuan;WANG Lei;ZOU Sheng-zhang;WEI Hua-zhou;MO Jia-rong(Guangxi Karst Resources and Environment Research Center of Engineering Technology,International Research Centre on Karst under the Auspices of UNESCO,Institute of Karst Geology,Chinese Academy of Geological Sciences,Guilin 541004,China;Pingguo Guangxi,Karst Ecosystem,National Observation and Research Station,Pingguo 531406,China;Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area,Ministry of Natural Resources,Nanning 530028,China;School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China;Tianjin Center,China Geological Survey,Tianjin 300170,Chian;Geology Team No.4 of Guangxi Zhuang Autonomic Region,Nanning 530031,China;Natural Resources Ecological Restoration Center of Guangxi Zhuang Autonomous Region,Nanning 530028,China)

机构地区：[1]中国地质科学院岩溶地质研究所,广西岩溶资源环境工程技术研究中心,联合国教科文组织国际岩溶研究中心,广西桂林541004 [2]广西平果喀斯特生态系统国家野外科学观测研究站,广西平果531406 [3]自然资源部南方石山地区矿山地质环境修复工程技术创新中心,广西南宁530028 [4]中国地质大学(北京)地球科学与资源学院,北京100083 [5]中国地质调查局天津地质调查中心,天津300170 [6]广西壮族自治区第四地质队,广西南宁530031 [7]广西壮族自治区自然资源生态修复中心,广西南宁530028

出　　处：《中国环境科学》2024年第12期6817-6827,共11页China Environmental Science

基　　金：中国地质调查局地质调查项目(DD20230081,DD20221758);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(NFSS2023011);国家资助博士后研究人员计划项目(GZB20230687);广西重点研发计划项目(桂科AB21220044)。

摘　　要：以广西横州市岩溶区和非岩溶区为研究区,针对耕层土壤Zn的输送途径和年输送通量密度进行对比研究.结果表明,受成土母质影响,岩溶区表层土壤Zn含量明显高于非岩溶区,岩溶区和非岩溶区土壤Zn的输入量受人类活动影响较大,主要输入途径均为大气沉降,年输入通量密度均值分别为494.15和484.99g/(hm^(2)·a);主要输出途径为农作物收割,年输出通量密度分别为490.63和580.12g/(hm^(2)·a),受铁锰结核和灌溉水影响,非岩溶区年输出通量密度略高;研究区年净输入通量整体表现为Zn累积状态.A comparative study was conducted to analyze the import and export pathways,as well as the annual input and output flux density of Zn in cultivated soil,in both karst and non-karst areas of Hengzhou,Guangxi.The results showed that the content of Zn in soil in karst area was significantly higher than that in non-karst area under the influence of the parent material.The input of soil Zn in both karst and non-karst areas was significantly affected by human activities,with atmospheric deposition being the primary input pathway.The average annual input flux densities were 494.15 and 484.99g/(hm^(2)·a) in karst and non-karst areas,respectively.The main output pathway was through harvesting,with the annual output flux densities being 490.63 and 580.12g/(hm^(2)·a) in karst and non-karst areas,respectively.The annual output flux density in non-karst area was slightly higher due to the influence of Fe-Mn nodulation and irrigation water.Overall,the annual input flux showed Zn accumulation.

关 键 词：土壤锌(Zn) 年净输入通量密度 岩溶区 广西横州 

分 类 号：X53[环境科学与工程—环境工程]