摘要
本文对海南东寨港和厦门西港的两个红树林（白骨壤群落）的土壤ＣＨ４产生率及其土壤理化因子的影响进行了研究。海南红树林和厦门红树林的土壤ＣＨ４产生率平均值分别为 ３．５９和 １１．５９ｎｇ／ ｇｄ，高于海岸光滩的值（１．６２ ｎｇ／ ｇｄ）而低于红树林伐迹地的值（４８．９６ｎｇ／ｇｄ），说明红树林植被对海岸湿地ＣＨ４的产生有促进作用，且这种促进作用主要是通过根系腐解来实现的。相隔约 ５个纬度的两个红树林的土壤 ＣＨ４产生率均表现为暖季较高而冷季较低的季节变化模式。通过土壤理化因子与土壤 ＣＨ４产生率的多元线性回归分析，我们得出土壤含水量、有机质、Ｃａ２＋、Ｍｇ２＋和ＳＯ４２－对海南红树林土壤ＣＨ４产生率有影响，而厦门红树林土壤ＣＨ４产生率的主要影响因素是土壤含水量、全Ｎ和Ｃｌ／ ＳＯ４２－。
Summary The mean rate of methane production from soils of Avicennia manna mangrove forest at Dongzhai Harbor in Hainan Province and at Western Harbor in Xiamen were 3.59 and 11.59 ng / gd, respectively. It was higher than that of a coastal barren shoal (1.62ng / gd) and lower than that of a mangrove forest slash (48.96ng / gd). The mangrove vegetation may enhance methane production from costal wetland due to decay of its roots. There were similar seasonal patterns of methane production rates (wanner season's > colder season' s) in the two mangrove forest. By multi-factor linear regression analysis, we concluded that soil water content organic matter, Ca2+, Mg2+ and So42+ had great effects on methane Production rates of the mangrove forest in Hainan, while soil water content total N and Cl- / SO42- ratio had great effects on mangrove forest in Xiamen.
出处
《土壤学报》
CAS
CSCD
北大核心
2000年第1期77-84,共8页
Acta Pedologica Sinica
基金
国家自然科学基金!49676298
关键词
红树林
土壤
理化因子
甲烷
湿地
Avicennia manna mangrove, Soil, Methane production rate Physical and chemical factors
