海南东寨港红树林土壤原生动物的群落结构特征  

Structure and distribution of soil protozoa at Dongzhaigang mangrove in Hainan island

作　　者：廖庆玉[1,2] 章金鸿[3] 李玫[4] 卢彦[3] 魏鸿辉[3] 徐润林[1] 

机构地区：[1]中山大学生命科学学院 [2]广州市环境保护科学研究院,广东广州510620 [3]广州市环境保护科学研究院 [4]中国林科院热带林业研究所

出　　处：《生态环境》2008年第3期1077-1081,共5页Ecology and Environmnet

基　　金：国家自然科学基金项目(U0633002)

摘　　要：研究报道了海南东寨港三个不同生境红树林(裸滩、人工红树林和天然红树林)土壤原生动物的群落结构,结合土壤理化性质对它们的现存量、群落多样性、优势度以及区系相似性进行了对比分析。统计学分析结果表明,原生动物的现存量与土壤pH值、含水量和盐度均有相关关系,但含水量的意义最大,pH值其次,盐度最小。与土壤总氮、总磷、有机质和SO42-呈极显著正相关,与总钾呈显著负相关;5个因子中,总磷对原生动物的影响最大,其次是SO42-和总氮,再次是有机质,总钾的影响最小。原生动物的群落多样性指数由低到高为裸滩<人工红树林<天然红树林。区系相似性系数最大为人工红树林与天然红树林,最小为裸滩与天然红树林。The distribution of soil protozoa in three different habitats within a typical mangrove forest in Dongzhaigang, Hainan, China was investigated. The three habitats were bare land （without vegetation）, man-made mangroves and natural mangroves. The abundance, biodiversity, dominance and community similarity index of protozoa with different physical/chemical properties were analyzed. Statistic analysis showed that： the abundance of soil protozoa was positively correlated with pH, salinity, organic matter （OM）, total nitrogen （TN）, total phosphorus （TP） and sulfate （SO4^2-） of the mangrove soil, but the correlation coefficients with moisture and TK were negative. The protozoan biodiversities followed the order of bare land 〈 man-made mangroves 〈 natural mangroves. Man-made mangrove showed the highest similarity with natural mangrove, bare land and natural mangrove had the smallest similarity in three different habitats.

关 键 词：东寨港 红树林 土壤原牛动物 群落分布 

分 类 号：S154.385[农业科学—土壤学]