duff是什么意思

网络释义

用法例句

The Effect of Litter on Succession of Plant Community in Saline-Alkali Grassland;

枯枝落叶层对盐碱化草地植物群落演替的作用

The new matured seeds,seeds placed in the forests and in litters for 2 months were taken into lab as testing materials.

对辽宁东部清原森林生态实验站的花曲柳、蒙古栎、水曲柳3种林型种子进行带菌状况检测,将新成熟种子、在林下置放2个月和在林内枯枝落叶层下置放2个月的种子取回实验室,对其种壳表面上清液中的细菌、真菌和放线菌进行计数分析,并把剥离种衣的种子在三大菌培养基上接种,检测其染菌状态,结果表明,在林内枯枝落叶层下种子菌落最多,林下对照种子次之,新成熟种子最少,种子随着时间延长,染菌几率急剧增多。

The wilting litter in Qilian Mountains water resources conservation forest and the decomposing process of the litter as well as the amount of their accumulation were analyzed with changes in time.

通过对祁连山水源涵养林凋落物及其分解过程以及蓄积量随时间变化的分析 ,研究了枯枝落叶层的持水、截留作用和蓄水保土效益 ,认为祁连山水源涵养林枯枝落叶层的水文生态功能最终体现在水土保持和水源涵养效能上 ,为综合评价祁连山水源涵养林生态功能提供了科学依

Barrier effect of litter layer on natural regeneration of forests:A review;

枯枝落叶层对森林天然更新的障碍

Water holding capacity and nutrients of litter layers in a Pinus tabulaeformis plantation at different ages in Mount Xiaolong of Gansu;

不同林龄油松人工林枯枝落叶层持水性及养分含量

Aiming at promoting relative studies in future on the basis of synthesizing existed results and achievement,some relevant studies are systematically analyzed,such as canopy interception and its effect on the rainfall erosivity, effect of litter layer on conserving soil and water, the relationship between vegetation coverage and soil loss and water runoff, and the improvement of root s.

系统分析了国内外有关植被的冠层对降雨的截流作用以及对降雨侵蚀动力的影响 ,地表枯枝落叶层的水土保持作用、植被覆盖度与水土流失之间的关系和地下根系提高土壤抗冲性等方面的研究。

Energy of forest floor in natural and monoculture plantation forests of Castanopsis kawakamii;

格氏栲天然林与人工林枯枝落叶层能量现存量

Bio-chemical properties of the forest floor in subalpine bamboo communities in western Sichuan;

川西亚高山箭竹群落枯枝落叶层生物化学特性

Carbon and nutrient pools of forest floor in native forest and monoculture plantations in subtropical China;

格氏栲天然林与人工林枯枝落叶层碳库及养分库

Litter breakdown or fragmentation is due to the litter fauna.

落叶层粉碎的原因在于落叶层的动物相。

The undercomposed litter forms a nutrient bank.

未分解的落叶层也会形成一个养分库。

Dissolved Organic Matter of Soil and Forest Floor in Forest Ecosystems;

森林土壤和枯枝落叶层DOM的研究

Soil animals increase the speed of litter breakdown by disintegrating tissue.

土壤动物通过分解组织，加速落叶层降解的速度。

A Study on the Element Extraction from OrganicMatter of Forest Floor of Norway Spruce

挪威云杉林枯枝落叶层元素浸提量的研究

Ecological Functions of Forest Floor and Coarse Woody Debris in Forest Ecosystems in Subtropical China;

森林枯枝落叶层与粗木质残体的生态功能

Its long sensitive trunk enables it to investigate the depths of the leaf litter

它们利用那好像象鼻的鼻子 便知道枯枝落叶层 的深度

Yet another varied population of creatures lives within the leaf litter.

还有另一些生物在这枯枝落叶层 生长 这里的空气非常潮湿

Habitat and Ecology: On litters under forests. Flowering and fruiting: Aug.

生境与生态：局限生长于林下的枯枝落叶层上。花、期：8月。

There are also some estimates of the efficiency of litter decomposition by Basidiomycetes in pure culture.

也有一些关于纯培养担子菌分解落叶层效力的估计。

leaves at the base of the trees

树下堆积的厚层落叶

A carpet of leaves covered the ground.

一层厚厚的落叶覆盖在地上。

A carpet of leaves and pine needles on the forest floor.

森林覆被上一层厚厚的落叶和松针

There is a carpet of leaves and pine needles on the forest floor.

森林中的地面上有一层厚厚的落叶和松针。

Carbon and nitrogen storages and allocation in tree layers of Fraxinus mandshurica and Larix gmelinii plantations

水曲柳和落叶松人工林乔木层碳、氮储量及分配

Chemical properties of litter layers in coniferous forests of western Qinling Mountains

秦岭西部山地针叶林凋落物层的化学性质

EFFECTS OF URBANIZATION ON THE CONCENTRATIONS OF HEAVY METALS IN DECIDUOUS FOREST FLOOR IN STUDY CASE OF NEW YORK CITY

以纽约为案例的城市化对落叶阔叶林死地被层重金属含量的影响

Life form spectra,leaf character,and hierarchical-synusia structure of vascular plants in Thuja sutchuenensis community

崖柏群落维管束植物生活型组成、叶子性状及层次层片结构