广西红海榄红树群落的K、Ca、Mg累积和循环  

STUDY ON THE ACCUMULATION AND BIOLOGICAL CYCLES OF K,Ca AND Mg IN RHIZOPHORA STYLOSA MANGROVE COMMUNITY IN GUANGXI

作　　者：林鹏[1] 尹毅[2] 卢昌义 

机构地区：[1]厦门大学生物学系,厦门 361005 [2]广西师范大学生物系

出　　处：《Acta Botanica Sinica》1993年第9期703-709,共7页Acta Botanica Sinica（植物学报：英文版）

基　　金：国家教委博士点基金资助项目

摘　　要：研究了广西山口英罗湾红海榄(Rhizophora stylosa Griff.)群落的K、Ca、Mg的吸收、分布及其生物循环。结果表明:该群落植物现存量中,库存K、Ca、Mg总量分别为46.26 g·m^(-2)、276.33 g·m^(-2)和50.43 g·m^(-2),其中地上部分别为27.15 g·m^(-2)、233.98 g·m^(-2)和21.60 g·m^(-2);地下部分别为19.11 g·m^(-2)、42.35 g·m^(-2)和25.83 g·m^(-2)。群落的K、Ca、Mg元素生物循环为:年吸收量分别为4.46g·m^(-2)、17.46g·m^(-2)和4.81g·m^(-2);存留量分别为1.67g·m^(-2)、10.83g·m^(-2)和1.39g·m^(-2);归还量分别为2.79g·m^(-2)、6.63g·m^(-2)和3.42 g·m^(-2)。富集率分别为1.81、1.20和1.80。周转期K、Ca、Mg分别为17年、42年和15年,其中Mg的循环最快。The present paper deals mainly with the absorption,distribution and biological cycles of K,Ca and Mg in Rhizophora stylosa mangrove community in Yingluo Bay of Guangxi, China.The results showed that: In standing crop of the community,the total amounts of K,Ca and Mg were 46.26 g ? m^(-2),276.33g ? m^(-2) and 50.43 g ? m^(-2),respectively.The biological—cycles of K,Ca and Mg in this stand were:annual uptake 4.46 g ? m^(-2) for K, 17.46 g ? m^(-2) for Ca and 4.81 g ? m^(-2) for Mg ;annual retention 1.67 g ? m^(-2) for K,10.83 g ? m^(-2) for Ca and 1.39 g ? m^(-2) for Mg;annual return 2.79 g ? m^(-2) for K,6.63 g ? m^(-2) for Ca an 3.42 g ? m^(-2) for Mg.The enrichment ratios of K,Ca and Mg in this community were 1. 81,1.20 and 1.80,respectively.The speed of turnover period (yr) was 17,42 and 15, respectively,in which the speed of Mg recycling was the fastest.

关 键 词：红树植物 红海榄 生物循环 钾 钙 

分 类 号：Q949.761.7[生物学—植物学]