海南山地雨林土壤CH_4通量与环境因子的关系研究  

Relationship between Greenhouse Gas CH_4 from Soil and Environmental Factors in Tropical Montane Rainforest

作　　者：白贞智 付青霞 

机构地区：[1]江苏省通州湾江海联动开发示范区规划建设环保局,江苏南通226333 [2]西北农林科技大学林学院 [3]西北农林科技大学资源与环境学院,陕西杨凌712100

出　　处：《陕西林业科技》2017年第3期1-3,共3页Shaanxi Forest Science and Technology

摘　　要：采用静态箱法采样、气相色谱法测定等方法,2012年6月-2013年5月分别对海南省热带山地雨林原始林(PMR)、热带山地雨林次生林(SMR)和热带山地雨林鸡毛松林(PIP)的土壤CH_4通量及其与土壤含水孔隙率(WFPS)、土壤温度关系进行了研究,结果为尖峰岭热带山地雨林土壤年平均CH_4通量为(-0.594 7±0.112 0)mg CH_4m^(-2)·d^(-1),不同林型间差异不显著(P>0.05),其中SMR土壤为(-0.505 8±0.202 6)mg CH_4 m^(-2)·d^(-1),PIP土壤为(-0.625 6±0.161 3)mg CH_4m^(-2)·d^(-1);PMR土壤为(-0.633 4±0.196 8)mg CH_4m^(-2)·d^(-1);3种林型的土壤CH_4通量与土壤温度之间的关系不显著(P>0.05);土壤CH_4通量分别与WFPS、SMR的WFPS呈显著线性关系(P<0.01),与PMR的WFPS关系不显著(P>0.05)。This study selected the tropical montane rainforest in Jianfengling,Hainan Island as the study area.The relationship between soil greenhouse gas CH_4 and environmental factors were studied.The results showed that average annual CH_4 flux of soil in this region is（-0.594 7±0.1120）mgCH_4 m^（-2）·d^（-1）,no significant difference existed among different forest types（P0.05）.CH_4 flux through SMR is（-0.505 8±0.202 6）mg CH_4 m^（-2）·d^（-1）,that through PIP is（-0.625 6±0.161 3）mg CH_4 m^（-2）·d^（-1）,and（-0.633 4±0.196 8）mg CH_4 m^（-2）·d^（-1） through PMR.CH_4 flux had no significant relationship with soil temperature,but there was a significant linear relationship with WFPS and SMR.No significant relationship was found between other indicators of soil and CH_4 flux.

关 键 词：山地雨林 土壤 甲烷 温度 WFPS 

分 类 号：S718.51[农业科学—林学]