垂直潜流人工湿地中植物多样性对基质有机碳动态的影响  

Effects of plant diversity on substrate organic carbon dynamics in a vertical subsurface flow constructed wetland

作　　者：朱四喜[1,2] 常杰[2] 葛滢[2] 王海[3] 王凤友[1] 吴云杰[1] 苏春花[1] 

机构地区：[1]贵州民族大学化学与环境科学学院,贵州贵阳550025 [2]浙江大学生命科学学院,浙江杭州310058 [3]绍兴文理学院生命科学学院,浙江绍兴312000

出　　处：《广东农业科学》2014年第1期46-51,共6页Guangdong Agricultural Sciences

基　　金：2012年教育部新世纪人才支持计划项目(NCET-12-0659);国家自然科学基金(31270377);贵州省优秀科技教育人才省长资金(黔省专合字[2012]71号);贵阳市低碳科技计划项目(筑科合同[2012]205号)

摘　　要：测定了4个季节的大型垂直潜流人工湿地中基质有机碳含量,以研究植物组成与多样性(包括植物物种多样性、功能群多样性与植物组成)对有机碳季节动态的影响。方差分析结果表明:在大型人工湿地中,春季、冬季植物物种多样性对基质有机碳含量有显著正效应,且植物组成四季都有极显著的影响,而功能群多样性四季中都没有显著效应。因而,当衡量植物多样性对基质营养季节动态(如有机碳)的影响时,一般是植物组成和物种多样性要比功能群多样性更具有说服力。同时,基质有机碳含量在春季、冬季较高,而在夏、秋季较低,表明基质营养(如有机碳)的季节动态变化趋势与植物的生长周期相一致。另外,四季中基质有机碳含量与基质容重呈显著正相关,而在2008年10月植物生物量与基质有机碳含量呈显著负相关。This study attempted to measure the contents of substrate organic carbon（SOC） in four different seasons in a full-scale constructed wetland in southeastern China to investigate the effects of plant diversity （i.e., plant species diversity, functional group diversity and plant composition） on seasonal dynamics of SOC. ANOVA analysis in this study showed that plant species diversity had significant effect on SOC in Spring （April, 2008） and Winter （January, 2009）, and plant composition had very significant effect, while functional group diversity had no significant effect in the four seasons. Therefore, plant species diversity and composition in general explained much more about the measured nutrient cycling processes （such as SOC） than did functional group diversity in high nutrient supply in the full-scale constructed wetland. Meanwhile, all treatments had the highest SOC pool size in Winter and Spring. While those in Summer （July, 2008） and Autumn （October, 2008） were lower, indicating that the seasonal dynamic rules of SOC were very consistent with plant growth cycle. In addition, irL four seasons, soil organic carbon content decreased with the increase of soil bulk density, and plant biomass decreased with the increase of SOC in October, 2008.

关 键 词：物种多样性 植物组成 人工湿地 营养循环 有机碳 

分 类 号：Q16[生物学—普通生物学]