Comparison of Three Methods of Assessing Grassland Productivity and Biomass Dynamics
Comparison of Three Methods of Assessing Grassland Productivity and Biomass Dynamics
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三种草地生产力和生物量动态评估方法的比较
DOI：
10.2307/2424301
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
W. F. Harris
中科院分区：
文献类型：
--
作者：
J. Kelly;G. M. V. Dyne;W. F. Harris
从三个不同的草地群落的数据进行了分析，以评估三种方法的有效性估计净生产力的植物群落占主导地位的各种混合物的草，杂类草和灌木。方法是：（1）最高现存量，（2）每个物种最高生物量的总和，（3）生物量增加的增量总和。每种方法适用于活生物量，立死生物量和凋落物。比较的方法表明，每一个有其应用，但在大多数情况下，积极的生物量增加的总和给出了最大的估计群落净生产力。
Data from three different grassland communities were analyzed to evaluate the effectiveness of three methods of estimating net production of plant communities dominated by various mixtures of grasses, forbs and shrubs. The methods were: (1) peak standing crop, (2) summation of peak biomass for each species, and (3) incremental summation of biomass increases. Each method was applied to living biomass, standing dead biomass and litter. Comparison of the methods indicates that each has its application, but in most cases summation of positive biomass increases gave maximum estimates of community net productivity.