崇明东滩湿地围垦区芦苇生物量影响因素初探  

Factors Affecting Biomass of Phragmites australis in Polders on Dongtan Wetland of Chongming

作　　者：马金妍[1] 石冰[1] 王开运[1] 巩晋楠[1] 侯颖[1] 

机构地区：[1]华东师范大学上海城市化生态过程与生态恢复重点实验室资源与环境学院,上海200062

出　　处：《生态与农村环境学报》2009年第4期100-102,共3页Journal of Ecology and Rural Environment

基　　金：国家自然科学基金重点项目(90511608);国家"十一五"科技支撑计划重大项目(2006BAC01A14);上海市科委重大项目(07DZ12037);中-法国际合作资助项目(063907040)

摘　　要：在对崇明东滩湿地围垦区土壤和芦苇生长状况进行调查的基础上,探讨了受潜水位波动影响的土壤环境因子对芦苇群落生长的影响。结果表明:(1)由于潜水位波动的幅度和时间不同,样地间土壤含水量存在显著差异(P1,2=0.004,P1,3=0.001,P2,3=0.040),进而导致受土壤含水量影响较大的芦苇株高和单株叶面积不同,土壤含水量高的样地,其芦苇株高和单株叶面积也达到最高值;(2)土壤全氮含量对芦苇密度、地上生物量和地下生物量有明显影响。Based on findings of soil investigation and growth of Phragmites australis in polders on Dongtan wetland of Chongming, discussions were held on how the soil environment factors subject to impact of fluctuating groundwater level affect growth of Phragraites australis. Results show that （ 1 ） groundwater level fluctuation varied in magnitude and time from quadrat to quadrat, resulting in different soil water regimes （P1 ,2 =0. 004 ,P1,3 =0. 001 ,P2,3 = 0. 040 ） , which hence led to sharp variation of Phragmites australis in plant height and plant leaf-area, and the plants in the quadrat the highest in soil water content were found to be the tallest in plant height and the biggest in plant leaf-area ; （ 2 ） soil total nitrogen content is significantly related to density and biomass, either aboveor below-ground, of Phragmites australis.

关 键 词：芦苇群落 生长指标 生物量 土壤含水量 土壤全氮 

分 类 号：Q948.11[生物学—植物学]