【摘要】 对三江平原毛果苔草 -狭叶甜茅湿地生态系统与小叶章湿地生态系统的生物量及其季节动态变化进行了研究 ,探讨了两类湿地的地上生物量、地下生物量、生物量总量、各组分生物量及它们之间的关系 ,并根据生物量随时间的变化求出了两类湿地地上生物量的绝对增长速率与相对增长速率。结果表明 ,两类湿地绝对增长速率与相对增长速率最大值分别为 11.4 711g ./m2 .d、2 0 .3733g ./m2 .d和 0 .0 635 g ./m2 .d、0 .0 72 5 g ./m2 .d。此外 ,对这两类湿地生物量总量及各组分生物量的季节动态进行了一元非线性回归模拟 ,建立效果比较理想的三次抛物线模拟模型 ,相关系数均在 0 .97以上更多还原

【Abstract】 The plant biomass and its seasonal dynamics of Carex lasiocarpa Glyceria spiculosa ecosystem and Deyeuxia angustifolia ecosystem,two kinds of typical wetland ecosystem were made in the Sanjiang Plain.The aboveground biomass,the belowground biomass,the total biomass,the each part biomass and their relations were discussed.In the meantime,the absolute growth rate and relative growth rate of biomass of two kinds of wetland were obtained according to the biomass changeng with time.The results showed that the maximum values of absolute growth rate and relative growth rate of the Carex lasiocarpa Glyceria spiculosa and Deyeuxia angustifolia were 11.4711g./m 2.d,20.3733g./m 2.d and 0.0635g./m 2.d,0.0725g./m 2.d,respectively.In addition,one fator non linear regression analysis was applied in the analysis of seasonal dynamics of total biomass and each part biomass,and very ideal parabola models were obtained,their correlate coefficients were all over 0.97.更多还原