herb layer是什么意思

网络释义

用法例句

Effects on herb layer in plant community of tourism disturbance in Huangshan Mountain scenic area

黄山风景区旅游干扰对植物群落草本层的影响

Using the indices of diversity,richness and evenness,the species diversity of shrub and herb layers under forest communities in Liangshui Nature Reserve was studied in this paper.

该文采用多样性指数、丰富度指数、均匀度指数等对凉水自然保护区森林群落林下灌木层和草本层的物种多样性进行研究。

Based on the field investigation and by using the indices of diversity,richness and evenness,this paper studied the species diversity of shrub and herb layers under forest communities in Huoshan Mountains of Shanxi Province.

在野外获得样方的基础上,采用多样性指数、丰富度指数、均匀度指数等对山西霍山森林群落林下灌木层和草本层的物种多样性进行了研究,结果表明,多数森林群落林下灌木层多样性指数和均匀度指数均高于草本层,而丰富度指数则相反。

Carbon Density of Herbage in Natural Secondary Pinus tabulaeformis Forest in Huoditang Zone,Qinling Moutains;

秦岭火地塘天然次生油松林间草本层碳密度

Estimation of carbon release from shrubs,herbages and litters in Daxing an Mountains by forest fires in 1980-1999.;

1980—1999年大兴安岭灌木、草本和地被物林火碳释放估算

The herbage and vitamine toothpast is natural and environmental toothpaste.

草本维生素牙膏是绿色环保型牙膏 ,其主要活性成分为维生素B3、C、E和叶绿素和丹皮酚等 ,改善微循环、提高免疫力和切断口腔疾病的传播渠道是草本维生素牙膏防治口腔疾病的3种主要作用方式 ,草本维生素牙膏具有生物营养、平衡口腔和天然高效的口腔护理特点 ,将成为21世纪的主流牙

Effects of thinning on species diversity and composition of understory herbs in a larch plantation.;

间伐对落叶松人工林内草本植物多样性及其组成的影响

The plot experiment of 11 land use types include 3 herb land,3 shrub land,4 arbor land and 1 farmland at Ansai soil and water conservation research station in loess hilly region were observed.

对黄土丘陵沟壑区安塞水土保持试验站3种草本、3种灌木、4种乔木、1种农田共计11种不同土地利用方式径流小区进行径流和侵蚀泥沙观测,并分别分析其养分含量,研究黄土丘陵区不同土地利用方式水土流失及养分保蓄效应。

families,161 genera and 531 species of herbaceous plants from Gansu have been sorted and the relation between species distribution and their latitude analysed.

对甘肃产 5科 1 61属 531种草本植物 (不包括栽培属种 )进行了鉴定和登记 ,且对它们进行了统计分析和区系地理研究。

The Soil Anti-erodibility and Growth of Fine Root and Grass Root in Different Herbages of the Triploid Populus Tomentosa Carr Woodland;

不同草本层三倍体毛白杨林地细根和草根生长及土壤抗蚀性研究

Effects on herb layer in plant community of tourism disturbance in Huangshan Mountain scenic area

黄山风景区旅游干扰对植物群落草本层的影响

Analysis of the Stability of the Plant Community of Epimedium brevicornu Maxim.of Jincheng Mountain in Jialing River Basin

金城山草本层淫羊藿植物群落的稳定性分析

The influence of exotic in herb is more grave than in shrub.

草本层中外来植物的影响程度大于灌木层中外来植物的影响程度。

The complicated vertical structure could be divided into tree layer, shrub layer and herb layer, as well as a definite number of interstratum plants.

群落垂直结构复杂,可分为乔木层、木层和草本层,并有一定数量的层间植物。

The species richness and species diversity index of the tree layer and shrub layer were obviously bigger than those of the herb layer.

乔木层和灌木层的物种丰富度和物种多样性指数均明显大于草本层。

The species richness and diversity index of the tree layer and the shrub layer was obviously higher than that of the herb layer, and their evenness had evident difference.

乔木层、木层的物种丰富度、种多样性指数均大于草本层,且差异极显著,群落均匀度差异显著。

Biomass and Niche Characteristics of Understory Herb Layers in Three Types in the Eastern Mountain Area of Liaoning Province

辽东山区3种林型林下草本层生物量及生态位特征

It was found that: (1) In all 17 plots, herb layers had the highest species abundance,and tree layers had the highest species evenness.

结果如下：（）门个样方中物种丰富度指数是草本层最高，均匀度指数是乔木层最高。

the ability of water conservation of bush, herbaceous and bryophyte was lower;

灌木、草本、苔藓 3个层次涵蓄水分的能力较低 ;

Testing the Neutral Theory of Insect Communities in the Canopy of Wetland Herbaceous Plants

湿地草本植物冠层昆虫群落的中性理论验证

people at the grassroots level

基层群众，草根阶层

Arbor and shrub layer comprised 94.8% and 1.2% of the biomass, herb and litter layer comprised 0.7% and 3.3% of the value,respec- tively.

乔木、灌木、草本和死地被物层分别各占94.8％,1.2％,0.7％和3.3％。

The Comprehensive Evaluation of the Ornamental Flower Plants Introduced from Canada by the Application of Hierarchy-relation Analysis

运用层次-关联分析法综合评价加拿大引种草本花卉

A surface layer of earth containing a dense growth of grass and its matted roots;sod.

草皮，草根土地面最上层的土层，包括厚密的草和垫子一样的根；草地

Shen Nong' s Herbal Classic

神农本草经（中医）

Now on the platform stood this shell of straw.

台面上盖着一层草。

herbaceous or woody climbers.

草本或木本攀缘植物。