深圳市东涌红树林生态环境地质特征  

Eco-Environmental Geological Features of Mangrove in Dongchong, Shenzhen City

作　　者：卢薇[1] 尹小玲 龚鹏 张洪岩 易顺民 邱琼艺 Lu Wei;Yin Xiaoling;Gong Peng;Zhang Hongyan;Yi Shunmin;Qiu Qiongyi(Guangzhou Institute of Geography//Guangdong Open Laboratory of Geospatial Information Technology and Application,Guangdong Academy of Sciences,Guangzhou 510070,China;Shenzhen Natural Resources and Real Estate Evaluation and Development Research Center//Shenzhen Geo-Environment Monitoring Center,Shenzhen 518040,China;School of Geography,South China Normal University,Guangzhou 510631,China)

机构地区：[1]广东省科学院广州地理研究所//广东省地理空间信息技术与应用公共实验室,广州510070 [2]深圳市自然资源和不动产评估发展研究中心//深圳市地质环境监测中心,广东深圳518000 [3]华南师范大学地理科学学院,广州510631

出　　处：《热带地理》2023年第11期2167-2177,共11页Tropical Geography

基　　金：深圳市规划与自然资源局“深圳市自然保护区生态环境地质调查项目”(SZDL2021337822)。

摘　　要：为了给红树林生态保护修复和自然保护区的建设管理提供基础支撑,通过生态环境地质调查,利用地质学、地貌学、土壤学、生态学等方法研究东涌红树林的生态环境地质特征,并绘制了东涌红树林典型的生态环境地质剖面。结果表明:东涌红树林地表水中F^(-)偏高,水质略低于该处Ⅲ类水的水质目标,地下水为低矿化度、低硬度的淡水;区内土壤的Cd和Tl局部富集;N、P、Ca CO_(3)、Org和B等营养元素以缺乏和较缺乏为主,K的含量以中等和较丰富为主;部分土壤受到重金属污染,以As污染为主,其次为Cd;东涌红树林叶片营养元素较丰富,表明土壤营养元素的缺乏和重金属污染并不是研究区红树林的生长的最大限制因素,改善红树林的生长环境应从扩大景观面积和加强园区管理着手。Mangroves are halophytic forest plant communities located on saline marshes in estuaries of tropical and subtropical bays.They are one of the most vulnerable ecosystems in the world and are severely threatened by urban development,environmental pollution,aquaculture,and other problems.The Dongchong mangrove forest is a relatively well-preserved mangrove forest in China,with a large area and a typical Excoecaria agallocha landscape,which has significant ornamental and ecological conservation value.The aim of this study is to provide basic support not only for mangrove ecological conservation and restoration,but also to construct and manage nature's reserves.The eco-environmental geological characteristics of mangroves were investigated using geology,geomorphology,pedology,ecology,and other methods,and a typical eco-environmental geological profile of the mangrove in Dongchong was drawn.The results show that the strata in the study area are mainly Quaternary sediments and rhyolites of the Nanshancun Formation of the Early Cretaceous.Faults are developed in the west of Dongchong Mangrove Wetland Park.The main environmental geological problems are uneven ground settlement,ground subsidence,and ground cracks.The concentration of F^(-) in the surface water are high,and the water quality is slightly lower than that of the Class III water standard;however,the groundwater is freshwater with low salinity and hardness.Cd and Tl are locally significant in the surface soil of the study area.N,P,CaCO_(3),Org,and B are deficient in the soil,whereas the K content is mainly medium.A part of the soil is polluted by heavy metals,particularly As,followed by Cd.However,the mangrove leaves are rich in nutrients,indicating that the lack of soil nutrient elements and heavy-metal pollution are not the major factors limiting the growth of mangroves in this region.Improving the growth environment of mangroves should include expanding the landscape area and reinforcing reserve management.In the rock-soil-plant ecosystem,As,Pb,Cd,and B are s

关 键 词：东涌红树林 生态环境地质 土壤环境背景 内梅罗综合污染指数 富集系数 元素迁移 

分 类 号：X53[环境科学与工程—环境工程]