新疆农业大学校园内常见绿化树种叶片生物量估算

生物量是研究森林生态系统结构与功能的基础,生物量的估算对深入研究人工林生态系统生产力与环境因子之间的关系具有重要意义。笔者同时采用点数法和经验公式法对新疆农业大学校园内常见绿化树种的叶生物进行了估算,对比分析了2种方法得出的结果,得出白榆的叶生物量最大,圆冠榆最小,美国白蜡在两者之间。经验公式得出的叶生物量变异数小于标准枝点数法得出的叶生物量变异数,经验公式求算树种叶生物量可行。

Leaf Biomass Estimation of Common Greening Tree Species in Xinjiang Agricultural University Campus

Biomass is the basis for studying the structure and function of forest ecosystems. Biomass estimation is of great significance to study the relationship between plantation ecosystem productivity and environmental factors. In this paper, the leaf biomass of the common greening tree species in the campus of Xinjiang Agricultural University was estimated by the method of point numbers and empirical formula. The results of the two methods were compared, and the results showed that the leaf biomass of Ulmus pumila was the largest, Fraxinus americana is the second , Ulmus densa is the smallest. Leaf biomass variance of two method showed that the results empirical formula is more stable than point numbers, and it was feasible to estimate tree leaves biomass by empirical formula.