武夷山甜槠天然林生态系统不同深度土壤CO_2浓度  

CO_2 Concentration of the Soil with Different Depths of Ecosystem for Castanopsis eyrei Plantation in Wuyi Mountain

作　　者：江燕然 黄义雄[1] 叶功富[2,3] 林捷[2,3] 高伟[2,3] 张贻荣 

机构地区：[1]福建师范大学地理科学学院,福建福州350007 [2]福建省林业科学研究院,福建福州350012 [3]武夷山中亚热带常绿阔叶林生态系统定位研究站,福建武夷山354315 [4]武夷山市林业局,福建武夷山354300

出　　处：《防护林科技》2014年第4期1-3,20,共4页Protection Forest Science and Technology

基　　金：国家自然科学基金项目(41176092);国家"十一五"科技支撑计划(2009BADB2B0302);福建省森林积累营养和保育土壤功能监测与评价技术研究;国家林业局南方山地用材林培育重点实验室;福建省森林培育与林产品加工利用重点实验室资助

摘　　要：选择福建武夷山天然甜槠林作为研究对象,对不同深度土壤CO2浓度、土壤温度、土壤含水量同步进行日动态观测。结果表明：0～60cm深度土壤CO2浓度随深度的增加而升高,60cm深度以下土壤CO2浓度有所降低;不同深度土壤CO2浓度的日变化均呈现单峰型;不同深度土壤温度变化幅度较小,各层日变化模式相似;不同深度土壤含水量变化很小,且日变化模式无明显规律性;指数拟合分析显示,10、20、60、80cm土壤CO2浓度与温度具有极显著相关性,5、10、40cm土壤CO2浓度与含水量的相关性显著。Taking Castanopsis eyrei plantation in Wuyi Mountain as research object ,the daily variation of CO2 con-centration of the soil with different depths ,soil temperature and moisture content of soil was measured simultane-ously .Result shows that ：CO2 concentration at 0-60 cm depth increases with the increase of the depth ;CO2 concen-tration decrease below 60 cm ;diurnal variation of CO 2 concentration in the soil at different depths show a single peak ;temperature of soil with different depths have small change ;the simulation of the diurnal variation for each layer is similar ;soil moisture with different depths have small change ,and no significant regularity in diurnal varia-tion pattern ;exponential curve fitting shows that ：CO2 concentration at 10 ,20 ,60 ,80 cm soil layer have very signifi-cant correlations with temperature ;CO2 concentration at 5 ,10 ,40 cm layer significantly correlated with water con-tent .

关 键 词：天然甜槠林 土壤CO2浓度 温度 含水量 

分 类 号：S551.701[农业科学—作物学]