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。
At low doses, their effects aren't known, but may involve subtle and widespread stresses that ultimately change the composition of ecosystems.
如果含量过低，他们的效果还不是太清楚，但是可能最终还会引起生态系统组成的微小的、广泛的变化。
Effects of catalyst composition, preparation, and structure on reactivity are investigated emphatically.
着重考察了催化剂组成、制备方法以及结构特征对反应性能的影响。
Regression results showed that reaction time, pressure and composition of feed gas had marked effects on mass fraction of xylene soluble part and ethylene content in copolymer.
实验结果表明，反应压力、反应时间、原料气中乙烯含量对共聚物中的乙烯含量、二甲苯可溶物含量有显著影响；
Composition of chromate treatment soln., technological condition and effects and control of other major factors are discussed.
研究了铬酸盐处理液组成、工艺条件和其它主要因素的影响和控制。
Effects of polymerization time and composition of monomers were investigated.
研究了聚合时间、单体组成对酶促共聚的影响。
Effects of eicosapentaenoic acids on oxidative stress and plasma fatty acid composition in patients with lupus nephritis.
狼疮性肾炎患者中二十碳五烯酸对于氧化应激和血浆脂肪酸组分的作用。
This article has discussed the composition? Effects and manufacture of bentonite deodorant for refrigerator. Thr deodorizing principle and the mensuration of deodorizing effect are discussed also.
本文详述了膨润土冰箱除臭剂的组成、功效及制作过程。讨论了该除臭剂的除臭原理及除臭效果检测主法。
By measuring the skinfold thickness of triceps and subscapular, this paper studies the effects of physical exercise on body composition of girls during puberty.
通过测量肱三头肌位和肩胛下角位皮褶厚度，分析身体组成，探讨健身运动对青春期女孩发育的影响。
Effects of composition and content of rubbery phase as well as particle size on the mechanical properties and optical properties of composite materials were investigated.
考察了韧性粒子粒径、橡胶相组成以及橡胶含量对材料力学和光学性能的影响。
Objective: discuss the effects of handball activity to students body composition.
目的：探讨手球运动对大学生体成分的影响。
The paper briefly introduced the composition feature, production superiority and application effects of DIGISHOT digital source controller.
文中简要地介绍了DIGISHOT数字式震源控制器的组成特点、生产优势以及应用效果。
Silymarin on the chemical composition and extraction technology and pharmacological effects of the research progress.
对水飞蓟素的化学成分及其提取工艺和药理作用的研究进展进行综述。
Objective To explore effects of different diet composition on uncoupling proteins 2(UCP2) gene expression of rat white adipose tissue.
目的探讨不同饲料构成对大鼠白色脂肪组织解偶联蛋白-2基因表达的影响。
The effects of the composition and molecular weight of the HDI oligomer on the properties of coating film were studied.
通过改变HDI齐聚物合成反应的条件，探讨了齐聚物的组成和分子量对涂膜性能的影响。
The methods of extraction and purification, composition and pharmacological effects of tea polysaccharide is summarized.
综述了茶叶多糖的提取纯化方法、多糖组成及其药理作用。
According to the experimental results, the synthetical effects of glass composition and structure on irradiation proof ability were proposed.
根据实验结果，提出了组成和结构对玻璃防辐射能力的综合效应观点。
Combined with the fitting parameters obtained from the VG model, the effects of mineral composition and pore structure of the soil on SWCC are analyzed.
结合VG模型拟合的参数，着重分析了矿物成分和孔隙结构对膨胀土土水特征曲线的影响。
A sweet potato preservative was prepared. This paper simply discusses the composition, preparation technology, effects and economic benefit of the preservative.
研制了甘薯贮藏保鲜剂。简要论述了该保鲜剂的组成、制备工艺、效能，使用效果及经济效益。
The effects of fermentation temperature, the composition of inoculum and the concentration of NaCl on the fermentation was various.
发酵温度、发酵剂组成以及发酵液盐浓度都会显著影响混合发酵中菌的产酸代谢；
The effects of melting operating mode on composition control are introduced.
指出了熔炼工序某些环节对成分控制的影响。
The aim of the research was to explore the influence of word frequency, accessibility and list composition on recency effects, and the possible reasons.
本研究目的探讨词频、易接近性和词表序列成分对近因效应的影响及其原因。
This paper introduced the composition, technological characteristics and applying effects of the automatization system in the integrated control station.
文章介绍了集控站自动化系统的组成、术特点以及应用效果。
The effects of the composition and controlled conditions of electroless tin plating on the morphology of coatings are investigated.
研究了化学镀锡溶液组成和工艺条件对镀层表面形貌的影响。
The effects of catalyst composition and properties on yield distribution of catalytic cracking of coker gas oil containing feedstocks were studied.
探讨了以减压瓦斯油掺炼部分焦化蜡油为进料时催化剂组成及性能对催化裂化产品分布等的影响。
Three series of experiments were carried out to observe the effects of composition, presintering schedule, particle size of fe powders, compacting pressure, sintering time and hot-pressing.
进行了三组实验以观察成分、预烧结制度、铁粉颗粒大小，压制压力，烧结时间和热压的作用。
Species composition, quantitative dynamics and effects of gap age and gap size on species compositions were studied in the tropical montane rain forest of Bawangling Natural Reserve, Hainan Island.
分析了海南岛霸王岭自然保护区热带山地雨林林隙内树种的种类组成、数量动态以及林隙年龄和林隙面积对树种组成及数量的影响。
Species composition, quantitative dynamics and effects of gap age and gap size on species compositions were studied in the tropical montane rain forest of Bawangling Natural Reserve, Hainan Island.
分析了海南岛霸王岭自然保护区热带山地雨林林隙内树种的种类组成、数量动态以及林隙年龄和林隙面积对树种组成及数量的影响。
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