查询词典 soil bank

Based on these, this study was to determine the relationship between standing vegetation and soil seed bank. The main results are as follows: 1 Effects of grazing on plant communities The grazing successions were Stipa klemenzii → Salsola collina + Stipa klemenzii → Salsola collina community in the desert steppe; Stipa grandis or Leymus chinensis → Cleistogenes squarrosa + Stipa krylovii or Stipa grandis → Potentilla acaulis + Cleistogenes squarrosa community in the typical steppes and Leymus chinensis + forbs →Leymus chinensis + Stipa baicalensis community in the meadow steppe.

主要结论如下： 1放牧对植物群落的影响荒漠草原的放牧演替规律为小针茅群落→猪毛菜+小针茅群落→猪毛菜群落；典型草原为羊草或大针茅群落→糙隐子草+大针茅群落或克氏针茅群落→星毛委陵菜+糙隐子草群落；草甸草原为羊草杂类草群落→羊草+贝加尔针茅群落，这是不同物种对牧压的不同适应结果造成的。

This article proposes a method of random seismic response for thesystem of bank soil,abutment,pier and bridge.

本文给出了河岸－桥台－桥墩－桥梁体系随机地震反应的整体分析方法。

To choose an appropriate reclamation model would be helpful to the improvement of soil seed bank's self-renewal ability and the stability of dump ecosystem, which was of importance for the land reclamation and ecological rehabilitation of the Antaibao opencast coal mine dump.

选择正确的复垦模式，有利于土壤种子库自我更新能力的增加和排土场生态系统稳定，对排土场的土地复垦和生态重建具有重要意义。

An appropriate reclamation model would improve the self-renewal ability of soil seed bank and the stability of dump ecosystem, which were of importance for the land reclamation and ecological rehabilitation at Haizhou opencast coal mine dump.

选择正确的恢复措施，有利于土壤种子库自我更新能力的增加和排土场生态系统稳定，对排土场的土地恢复和生态重建具有重要意义。

When he reached the east bank, he faked a fall, rose with two hands of German soil and remarked,"Thus William the Conqueror."

巴顿到河东岸后，即兴俯身，站起来时，两手攥着德国泥土，评论说，&征服者威廉再现。&

Four typical grassland communities, Stipa klemenzii, Stipa grandis, Leymus chinensis and Leymus chinensis + forbs, had been chosen along precipitation gradients from 200, 290, 350 to 450 mm respectively in Inner Mongolia Steppe. The objectives of this study were to determine the effects of grazing on plant community composition, aboveground and belowground biomass, species and functional group diversities and the relationship between diversity and productivity, the effects of grazing on soil seed bank species composition, seed density and diversity along the transect.

选取内蒙古草原三种主要草原类型(草甸草原、典型草原和荒漠草原)代表性群落羊草杂类草群落、羊草群落和大针茅群落、小针茅群落，应用样线法沿水分梯度研究放牧对内蒙古草原不同植物群落功能群组成、多样性、生产力以及多样性与生产力关系的影响和放牧对土壤种子库组成、大小以及多样性的影响，在此基础上，研究土壤种子库与地上植被间的关系。

On one side of the road rose a high rough bank where hazels and stunted oaks with their roots half exposed held uncertain tenure: the soil was too loose for the latter; and strong winds had blown some nearly horizontal.

路的一旁是一条不平坦的高坡，榛树和短小的橡树半露着根，不稳地竖在那里；这土质对于橡树来说是太松了，而强烈的风把有些树都吹得几乎要和地面平行了。

Jinsha River hot-dry valley ; savanna shrub-grass ; soil seed bank ; vegetation diversity

金沙江干热河谷；稀树灌草丛；土壤种子库；植物多样性

According to the charecteristice of soil-seed bank and overground vegetation in the natural recovering section and water-using section, the structure charecteristic of surrive natural secondary-forest and the problems existing in existence artificial forest, the strategy of building plant community for the vegetation recovering in hot-dry valley was pot forward.

根据系统中自然恢复斑块、水分利用斑块经水平阶整地的阶间坡面土壤种子库和地上植被特征、残存天然次生林的结构特点和现有人工林存在的问题提出干热河谷植被恢复中植物群落的构建策略。

The reduction of sediment transported down the Mississippi River was the result of engineering modification of the Mississippi, Missouri, and Ohio rivers and their tributaries by dams, meander cutoffs, river-training structures, and bank revetments and soil erosion control programs in the areas drained by them.

夹带砂石量的减少是由于沿河地区建起了不少水利改造工程，例如密西西比河、密苏里河及俄亥俄河及其支流上的大坝修建、截弯取直工程、河道重塑、河岸护堤工程和水土流失防控工程。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。