closed community是什么意思

网络释义

用法例句

Furthermore,correlation analysis have been performed between vegetal status measured by canopy density and shelterbelt porosity and TSP removal percentages.

通过对上海浦东某交通干道旁侧绿化带不同季节大气中总悬浮颗粒物(TSP)的测定,定量研究了绿化带对TSP的净化效益;同时对研究区域内植物的配置情况用郁闭度和疏透度进行了表征,并研究了其与TSP的净化效益之间的相关性。

The main factor of green belt hindering the gaseous pollutants diffusion was the canopy density and not the vegetation quantities.

以CO为环境示踪物,通过对西安市典型街道的实测和数据分析,讨论了绿化形式对街道污染物扩散效果的影响,指出绿化带对气态污染物扩散存在阻碍作用的因素是郁闭度,而不是绿量,车流量的大小对行道树树冠的生态净化功能有直接影响,并据此对街道绿化的生态设计给出了建议。

koreanumwhen the factors of planting density,canopy density and using fertilizer were changed.

以产量为指标,以种植密度、郁闭度及使用肥料为影响因素,采用正交试验法,探讨朝鲜淫羊藿于阔叶林下仿生栽培的最佳技术措施。

Quickly accurate determination method of forest land crown density based on ArcView GIS;

ArcView GIS支持下的林地郁闭度的快速精确测定方法

A new method to determine crown interception on the basis of calculating crown density where the raingage places within 1 m on all sides to it,which may determine the crown interceptions on different density classes at one time,is designed to solve the difficult problem,the big error in determining crown interception because of the unevenness of canopy density and spaces.

设计了一种基于计算承雨器四周各 1m范围内树冠郁闭度 ,进而通过一次降雨试验可观测到不同郁闭度级林冠截留降雨量的方法 ,解决了以往林冠截留降雨量测试中由于林冠疏密和树冠间隙分布不均引起的测量结果误差较大的难

Forest structure,individual quality,tree density and crown density,and structure and function of brush forest are used to construct a criterion to the LQBF.

判定低质低效林的依据是林分的结构、林木个体质量、密度和郁闭度、灌木林结构和功能。

Research on forest and crops interplanting on the front closing forest land of poplar tree;

杨树林地郁闭前林农间作研究

Simplified approach to measure canopy closure based on fish lenses

基于鱼眼镜头的林冠郁闭度简易测量方法

The characteristics of plant species structure of mature forest stands of Pinus armandi with both weak and moderate canopy closure in the Xishan Mount Forest Park of Kunming were studied by means of sample-plot survey in order to find out the influence of stand canopy closure on plant species structure.

为探讨郁闭度对植物物种结构的影响,用样方法对昆明西山弱度郁闭及中度郁闭的华山松成熟林植物物种结构特征进行研究。

crown closure measurement in aerial photo

授郁闭度航空象片测法

Study on Quantitative Retrieval with Hyperion EO-1 for Forest Canopy Closure;

Hyperion EO-1森林郁闭度反演研究

the secondary factors were the food abundance, vegetation type, coverage and shrub overcast, respectively;

次要因子是食物丰富度、植被型、郁闭度、灌木盖度;

Study on Wind Breaking Effects with Belt Scheme Arbor Forest at Low Canopy Density

低郁闭度乔木行带式固沙林防风效果研究

Simplified approach to measure canopy closure based on fish lenses

基于鱼眼镜头的林冠郁闭度简易测量方法

Wind Tunnel Test on Windbreak Effect in Mixed Forest of Arbor and Shrub at Low Canopy Density

低郁闭度乔灌混交林防风效果风洞试验研究

A Study of Interception of Picea Crassifolia Based on Different Canopy Closure

基于不同郁闭度的青海云杉冠层截留特征研究

Characteristics of Plant Species Structure of Pinus armandi Mature Forest with Two Different Stand Crown Closure

两种郁闭度华山松成熟林植物物种结构特征

Growth of characteristics Fatshedera lizei seedling under different canopy coverage of Cinnamomum camphora stands

不同郁闭度香樟林分下熊掌木生长的初步研究

The Ecological Function Characteristics and Its Proper Canopy Closure Studies of Trees (Bamboo)+Herbage Vegetation Pattern in the High Precipitation Area of Western China;

华西雨屏区林（竹）+草植被恢复生态功能及冠层适宜郁闭度研究

Extraction of Forest Types and Estimation of Forest Canopy Closure from Hyperspectral Remote Sensing;

高光谱遥感森林类型识别及其郁闭度定量估测研究

Water Consumption of Compound Plant Ecosystem and Effect of Canopy Densities on Turfgrass Evapotranspiration Research in the Summer Palace;

颐和园园林复合系统耗水及郁闭度对草坪蒸散影响研究

Characteristics of canopy interception and throughfall of Picea schrenkiana var.tianschanica(Rupr.)Chen et Fu

不同郁闭度天山云杉林林冠截留量及穿透雨量特征研究

Diversity of Understory Herbaceous Species and Canopy Density of Liriodendron chinense Stand

人工马褂木林下草本植物物种多样性与林分郁闭度的关系

Effects of Different Canopy Densities on the Growth and Partial Physiological Indexes of Lycium chinense Mill.

林分郁闭度对大叶枸杞生长及部分生理指标的影响

It shows that there are very different results of regenerative effects with the condition of different forest type,gloomy degree,slope degree,slope direction, deforest methods and deforest degree.

结果表明:不同林型、郁闭度、坡度、坡向、采伐方式及采伐强度其更新效果明显不同。

Effect of One-time Irrigation and Fertilization on the DBH and Crown Density of No.107 Poplar Plantations with Even Planting Density

一次性水肥措施对等密度107杨幼龄林胸径和郁闭度的影响作用分析

The Differences Between Relative Light Intensity and Yield,Quality in Two Canopy of Sweet Cherry

樱桃透光和郁闭树冠相对光照强度及其果实品质和产量的差异