种群生物量 meaning in Chinese
population biomass
Examples
- Based on the enviroment of the nandagang wetland , combining the outside investigation and inside analysis , adopting the mathematical analysis methods such as the principal component analysis ( pca ) , regression analysis , correlation analysis etc . the type of wetland ecosystem , the flora of the wetland plant , the type , the function , the formation and succession and the outside influencial factors of the vegetation , the ecological conditions and biomass of the reed population are all studied . the main results can be concluded as follows : 1 ) the nandagang wetland is a freshwater one close to the bohai sea . its ecosystem can be divided into two parts : natural ecosystem and semi - artificial ecosystem
本研究从南大港湿地的实际环境出发，采用样方调查的方法，以外业调查和内业分析相结合、野外采集测量与实验室分析处理相结合、定性描述与定量分析相结合为根本研究路线，应用主分量分析( pca ) 、回归分析、相关分析等数学分析手段，对南大港湿地生态系统的类型、湿地植物的区系组成、湿地植被类型、植被的功能、植被的形成和演替、植被的外界影响因素、湿地芦苇种群的生态条件和种群生物量等方面进行了较深入的研究，主要研究结果如下： 1 )南大港湿地是滨海泻湖型淡水湿地。 - The paper investigated the monthly biomass dynamics of grass layer of different plant communities in dafeng national david ' s deer nature reserve , which increased from may to september , the percentages of pennisetum virdis ( l . ) beauv . biomass were from 61 . 15 % to 85 . 57 % during may to september
摘要测定了大丰国家级麋鹿保护区圈养区内不同类型植物群落草本层总生物量随月份变化动态，结果表明，植物群落的总生物量从5月份至9月份呈增加趋势，其中狼尾草种群生物量占总生物量的比例从5月份的61 . 15 %增加到9月份的85 . 57 % 。 - The method of modified simplex was applied to optimize the models , and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form . taxus chinensis var . mairei population , and the highest growth rate of basal area was the tenth age class , namely the phase when breast diameter was 68 ~ 76 cm
以胸高断面积代替种群生物量，分别采用logistic常规模型及刘金福提出的logistic改进模型对南方红豆杉种群的增长动态进行研究，运用改进单纯形法对模型进行优化，拟合结果表明改进模型比logistic常规模型更符合南方红豆杉种群的增长趋势，南方红豆杉种群的最大增长速度出现在第10龄级，即胸径为68 76cm时期。