Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
Mingling is one of the important spatial structure indices to describe tree species segregation of mixed-species forest.
混交度是描述混交林中树种混交程度的重要空间结构指数。
In the view of some problems existed in tree species and breed structure and its management, some improving advice are put forward in this paper.
在树种和品种结构及管理上，都存在一些问题，本文对此进行阐述，提出了改进意见。
Using morphological characteristics, root-shoot ratio, anatomical structure of leaves, leaf water holding and WSD analyzed the water holding ability of 11 tree species.
从形态特征、根冠比、叶片解剖构造、叶片保水力、水分饱和亏等方面分析了11个树种对干旱的适应性特征。
AHP method with progressive rank structure was applied in the paper to study on the optimum structures of forest type and tree species in Qiuqiangou forest Farm, Shanxi Province.
选用层次结构的层次分析法作为数学工具，对山西省秋千沟林场的林种和树种结构进行了研究。
It pointed out the main factors determining the growth of fruit bodies of the edible fungus Suillus luteus and the greatest yield were accompanying tree species, site, forest stand structure and soil;
提出决定褐环粘盖牛肝菌等菌根食用菌子实体能否发生和发生最大产量的根本因素是共生树种类型、立地、林分结构、土壤；
It pointed out the main factors determining the growth of fruit bodies of the edible fungus Suillus luteus and the greatest yield were accompanying tree species, site, forest stand structure and soil;
提出决定褐环粘盖牛肝菌等菌根食用菌子实体能否发生和发生最大产量的根本因素是共生树种类型、立地、林分结构、土壤；
应用推荐