查询词典 grassland

Basing on the introduction of natural circumstances concluding topography,landforms and landscape,expounded the resource character of the area s,pointed out the six serious problems of alkalization,desertification,grassland degeneration,etc.

在介绍吉林省西部地区的地形、地貌、人文景观等自然环境的基础上，阐述了该区的资源特点，指出了该区经济发展存在的碱化、沙化、草原退化严重等六个问题。

The enclosed grassland is Stipa bungeana community,dominated by Stipa bungeana,Thymus mongolicus,Stipa grandis,Androsace erecta,and Heteropappus altaicus.

由于长期以来过度放牧和人类生产活动的影响，黄土丘陵区绝大多数天然草地已被破坏，宁夏固原云雾山自然保护区是黄土区仅存的天然草原。

From May to June 2001~2005 (except 2003), in the Honghuaerji area of Inner Mongolia, sampling method was applied to investigate the Bird Communities Structure of Grassland-Forest Ecosystems, Results indicated that:(1)In the Honghuaerji area, Passeriformes, Charadriiformes and Anseriformes were main birds, in summer reproducing season.

2001～2005年5～6月(除2003年)，在内蒙古红花尔基地区，应用样方调查法研究了草原-森林生态系统鸟类群落结构，结果表明：(1)在红花尔基地区，夏季繁殖季节鸟类组成是以雀形目、鸻形目和雁形目为主。

Grassland degradation in the SRYYR is caused by the integrated effect of anthropogenic and natural factors.

草地退化的SRYYR所造成的综合影响，人为和自然因素的影响。

A total of 112 plant species from the grassland and desert of Ordos were collected and examined, of which 108(96.43%) were infected by arbuscular mycorrhizal fungi.

本文以内蒙古自治区鄂尔多斯地区为研究背景，开展丛枝菌根植物和丛枝菌根真菌多样性及其分布的调查研究。

The interaction between soil heterogeneity and shrubs induced the autogenic development of "fertile islands" and the increasing spread of shrubs in the grassland ecosystems.

这种&肥岛&的形成和灌木的扩散之间的反馈作用能够改变该系统中的植被组成、结构和土壤养分分布格局，从而改变该生态系统的结构和功能。

Including walking through Kubuqi Desert, Badan Jilin Desert and hiking on Lunber grassland

包括库布齐沙漠穿越，巴丹吉林沙漠穿越，伦贝尔大草原徒步

The vegetation is becoming increasingly dominated by fewer, widely occurring species, such as hawthorn, cleavers or sterile brome in hedges, stinging nettle by streams, rye-grass in grassland, and bracken or mat-grass on moors and heaths.

事实上，这表明本来已经非常普通的植物种类变得更加普通，而原本就珍惜少见的植物种类则更为珍贵稀有，植物多样性受到破坏，种类单调的植被当然也就不那么吸引人了。

The vegetation is becoming increasingly dominated by fewer, widely occurring species, such as hawthorn, cleavers or sterile brome in hedges, stinging nettle by streams, rye-grass in grassland, and bracken or mat-grass on moors and heaths.

有关报告还显示，导致这些植物减少或消失的主要原因是来自汽车、化学肥料以及下水道污水的污染。目前，英国的植被正日益变得被较少的，广泛存在的几种植物控制着，如山楂、猪殃殃和雀麦草、荨麻、黑麦草、欧洲蕨、席草和石楠。

During ～2.68-2.45 Ma, the vegetation was dominated by arbores, mainly Pinus, Chenopodiaceae and Artemisia, indicating a cold warm climate in the mountain region. During ～2.45-2.11 Ma, herbs increased rapidly and the climate became dry-cold, indicating the characteristic of the bushveld climate. During 2.11-1.49 Ma, the quantity and species of the herbs reached the culmination and the bush increased accordingly, showing that the climate became more and more arid. During 1.49-1.36 Ma, herbs declined slightly but pteridophytes increased relatively greatly, revealing a dry-cold grassland climate.

约在2.68～2.45Ma期间，植被以乔木为主，主要为松、藜、蒿，属山地寒温气候；约在 2.45～2.11Ma期间，草本植物迅速上升，气候变得干旱寒冷，显示出灌木草原气候特征；在2.11～1.49Ma期间，草本植物数量和种类达到之最，灌木相对增加，也显示气候进一步趋于干旱；在1.49～1.36Ma期间，草本植物有小幅下降，但蕨类植物增加幅度较大，显示了干冷草原气候特征。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。