白洋淀两种生境中芦苇地上生物量及其影响因子分析  

Analysis of Aboveground Biomass of Phragmites Australis and Its Influencing Factors in Two Habitats of Baiyangdian Wetland

作　　者：赵志轩[1,2] 魏芳菲 王怡宁 邓晓雅 ZHAO Zhixuan;WEI Fangfei;WANG Yining;DENG Xiaoya(Hydrology and Water Resources Department,Nanjing Hydraulic Research Institute(NHRI),Nanjing 210029,Jiangsu,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing 210029,Jiangsu,China;Survey and Design of Nanjing Hydraulic Research Institute,Nanjing 210029,Jiangsu,China;China Institute of Water Resources and Hydropower Research(IWHR),Beijing 10038,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]水文水资源与水利工程科学国家重点实验室,江苏南京210029 [3]南京水利科学研究院勘测设计院,江苏南京210029 [4]中国水利水电科学研究院,北京100038

出　　处：《环境保护科学》2021年第1期87-91,共5页Environmental Protection Science

基　　金：国家重点研发计划项目(2016YFA0601602);国家自然科学基金青年基金项目(51409171)。

摘　　要：文章在野外调查的基础上,在白洋淀台田和沼泽中各选择6个样区,统计分析了2种生境芦苇地上生物量;运用冗余分析方法(RDA),分析了芦苇生长季(4~9月)平均水深、土壤/底泥有机质、全氮和全磷等对两类生境中芦苇地上生物量的影响。结果表明,台田、沼泽中芦苇地上生物量分别为1408.2±527.5 g DW/m^2、723.2±109.1 g DW/m^2,两类生境中的芦苇地上生物量沿水深梯度均呈先增加后减小的变化趋势。台田芦苇在水深为−77.3 cm时地上生物量最大,为2065 g DW/m^2,沼泽芦苇在水深为59.7 cm时地上生物量最大,为869.2 g DW/m^2。台地芦苇地上生物量与水深的相关系数为−0.813(P<0.05),与其他3个环境因子的相关性不显著;沼泽芦苇地上生物量与4个环境因子的相关性均不显著,表明沼泽芦苇地上生物量的影响因素较为复杂。Based on the field investigation,6 sampling areas were selected in the tableland and the swamp respectively.The aboveground biomass of Phragmites australis was measured in two habitats.The influence of average water depth,total nitrogen,total phosphorus and organic matter in soil and sediment on the aboveground biomass of Phragmites australis during the growing season was analyzed by using redundancy analysis(RDA)method.The results showed that the average aboveground biomass of Phragmites australis grew in the tableland and the swamp were 1408.2±527.5 g DW/m^2 and 723.2±109.1 g DW/m^2 respectively.The aboveground biomass in the two habitats increased first and then decreased along with the water depth gradient.The maximum aboveground biomass in the tableland and swamp were 2,065 g DW/m^2 and 869.2 g DW/m^2 with the corresponding water depth of−77.3 cm and 38.7 cm.The correlated coefficient between the aboveground biomass in the tableland and the water depth was−0.813(P<0.05).There was no significant correlation among the aboveground biomass and the other three environmental factors.There was no significant correlation among the aboveground biomass in the swamp and all the four environmental factors,thus indicating that the influence on the aboveground biomass of Phragmites australis in swamp habitat was relative complicated.

关 键 词：芦苇 地上生物量 水位梯度 影响因子 白洋淀 

分 类 号：X171.1[环境科学与工程—环境科学]