查询词典 vegetation

Firstly, vegetation degradation enlarges bareness of ground surface, which enhance wind erosion and dry blowing, make the soiltexture coursing, increase the soil bulk volume and low down the retentiveness of water.

首先，植被退化，增大了地表裸露度，风蚀与风选作用加强，使土壤质地粗化、容重增加，持水性能降低。

Increase of fragmentation degree is also shown that the increase of vegetation succession and revegetation's variety.

破碎化程度的增高也表明了复垦地的植被演替与恢复过程的多样性在不断增加。

Soil microbiotic crusts play important roles in vegetation restoration and revegetation in desert area.

土壤生物结皮在沙漠地区植被恢复和重建中具有重要的生态学意义。

Soil degradation caused by erosion and loss of vegetation is the principal problem to sustainable ecology in the xerothermic regions. Revegetation is considered as the essential process of soil restoration.

植被散失和水土流失导致的土壤退化是影响干热区生态可持续发展的主要问题，植被恢复是修复退化土壤的基本过程。

The flexible vegetation is a main kind of engineering materials in the ecological revetment engineering, because it grows quickly and is easy to be planted and constructed.

但是目前对于草本植物与水流之间相互作用的认识还很模糊，尤其是采用草皮护岸后对于原有河岸的糙率改变情况缺乏系统的研究。

In this paper, research on domestic and foreign documentation about large-roots ecological protection and mechanical analysis slope, consider the Hubei Sui （Suizhou - Yue Expressway for the landscape design as the practical engineering background, and in view of the current domestic vegetation revetment mechanical effect of the gaps, make a series of discussions and research.

首先，在分析了生态护坡作用机理的基础上，从复合材料学角度将根系和土壤看作按照一定规律组成的复合材料，并用微观力学研究分析根土复合体的弹性常数和基本强度，探求根系和土壤两种材料的特性对复合材料特性的影响。

Far from the rip-roaring Milan and alluring Florence, the countryside sun, creeks, birds, lizards and vegetation were his best teachers.

望看芬奇远处如画的景致，思绪不禁飘得更远：漫游在乡间的达芬奇此时还不知道佛罗伦萨的喧嚣与米兰的诱惑，这里有飞鸟、阳光与水流，大自然是他最好的老师。

River habitats, called riparian systems, often contain lush vegetation and a wealth of animal species.

河流栖息地，称为河岸系统，通常包含茂密的植被和大量的动物的种类。

Several representative regions including humid subalpine area, arid valley and the adjacent recovery area and the plateau region of Minjiang riverhead were selected to study the soil nutrient and biodiversity change. Based on field vegetation investigation, soil sampling and analyses, Ecological effects of land use/cover in these regions were discussed. Also in corporation with the social and economic data, the recovery methods of different degraded region were put forward.

研究选取亚高山湿润区域，半干旱河谷区及其恢复区，岷江源头高原面区域作为重点，通过大量的野外植被调查，土壤采样分析，多元统计方法等研究典型区土地利用／覆被变化的生态效应；并根据社会经济资料和调查数据和土地覆被-土壤相互作用规律，提出了岷江上游生态恢复对策。

Robinia pseudoacacia is the best tree kind to improve soil of re-vegetation in the coal waste piles.

在同一植被恢复过的矸石山上刺槐林对土壤的改良作用最好。

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。