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。
This paper treats of the causes of site productivity decline of artificial forest, including planting methods, climate, soil, population structure, species and the proper measures.
本文从育林措施、气候、土壤、人工林群落结构、树种等方面概述了引起地力衰退的主要因素和应对策略。
Wildlife is one of the key components of forest. Forest structure can be modified by forest tending, which can affect the species richness and abundance of wildlife in forest stand.
野生动物是森林的重要组成部分之一，森林抚育会引起森林结构的变化，而森林结构决定森林野生动物的种类、数量和分布。
The forest spatial structure had reflected in the forestry species spatial relations. The goal of studying the forest spatial structure is to provide basis for forest management.
森林的空间结构反映了森林群落内物种的空间关系，研究林分空间结构的目的是为经营提供科学依据。
Forest structure can be modified by forest tending, which can affect the species richness and abundance of wildlife in forest stand.
野生动物是森林的重要组成部分之一，森林抚育会引起森林结构的变化，而森林结构决定森林野生动物的种类、数量和分布。
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。
The effects of the sandbreak forest system in Yulin sandy area on the sandbreak, soil improvement and natural vegetation recovery were studied by investigating their configuring structure and species.
通过对陕北榆林风沙区防风固沙林体系的配置结构、树种组成、防风固沙效益、改良土壤的作用以及对天然植被的影响等的调查、观测和分析，结果表明：其配置结构较为合理，生态效益较为显著。
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；
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