过度放牧

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。

As the development of human society, population pressure is strengthened ceaselessly and unreasonable activity, be like excessive depasture, excessive cultivate, chaos is collected dig etc, make contemporary prairie happens generally degrade.

随着人类社会的发展，人口压力不断加强以及不合理的活动，如过度放牧、滥垦、乱采挖等，使现代草原普遍发生退化。

Zoology environment aggravation basically behaves the resource that it is water rare be short of and development uses rate low; extensive cultivate course of study to make quality of agricultural zoology environment deteriorates quickly; prairie ecosystem suffers excessive depasture wait for a reason to destroy serious, natural prairie produces structural sex decline, vegetation productivity is reduced significantly.

生态环境恶化主要表现为水资源稀缺且开发利用程度低；粗放型的种植业使农业生态环境质量迅速退化；草原生态系统受过度放牧等原因破坏严重，天然草原发生结构性衰退，植被生产力显著降低。

The results show that, firstly, Stellera chamaejasme L, which rely on their developed axial root system in the 10～40cm soil layer to occupy the competitive priority of volume, length, surface area and so on, in the case of their adaptive faculty to poor surroundings resulting from fruit picking, trampling and overgrazing as well as with the phenomenon of restrained growth among various plants, gradually become the dominant plant in the herbaceous community; secondly, this kind of degraded grassland has not displayed any general characteristic of degradation such as surface exposure, accumulative quantity of vegetation reduced, water loss, soil erosion and so on, therefor, it should be dealt with distinguishingly; thirdly, if"Stellera chamaejasme L Killer"and"Oxytropis ochrocephala Killer"invented by CAS are taken advantage of respectively in the bloom period of Stellera chamaejasme L and at the beginning of florescence of Oxytropis ochrocephala bunge by ultra-low volume spray of 1. 05L/hm〓 and 1. 35～165L/hm〓 dosage separately, the death rates of poisonous herbs may achieve above 95% and 92% correspondently; fourthly, this technology with the characteristics of high work efficiency, exclusive selectivity and convenient operation, is safe to non-target plants and other animals, and has no toxic or side-effect to environment; furthermore, an execution of"Stellera chamaejasme L Killer"spray and a two-year grazing prohibition can be effectively applied on degraded grasslands of"Weed and Poisonous plants Type".

结果表明：狼毒凭借发达的轴根系在10～40cm土层中形成的体积、长度、表面积等竞争优势，以及对采食、践踏、过度放牧所形成的不良环境的适应能力和异株克生现象的存在，逐步成为草群中的优势植物；毒杂草型退化草地没有表现出地表裸露、植物蓄积量减少、水土流失等一般性退化特征，对该类草地的治理应区别对待；应用中科院研制的'灭狼毒'和'灭棘豆'分别在狼毒盛花期和黄花棘豆初花期，以1.05L/hm〓、1.35～165L/hm〓的施用量超低容量喷雾，毒草的死亡率可达到95％、92％以上；该技术具有工效高、选择性专一、灭效高、操作简便，对非靶标植物和其它动物安全，对环境无毒副作用的特点；采用喷施'灭狼毒'+短期禁牧措施，可以有效治理毒杂草型退化草地。

Other patterns of land degradation deforestation, overgrazing, overcultivation, desertification, and salinization

其他形式的土地退化，森林砍伐，过度放牧，荒漠化，和盐碱化减少了净吸收二氧化碳，间接导致了全球气候变暖。

These results can shed lights on revealing the mechanisms of plant's adaptation to xeric conditions, as well as the effects of anthropogenic disturbances on the local extinction of native species, and/or invasion of shrubs.

我们的研究结果从植物种、功能群和群落三个层次进一步揭示了植物对干旱生境的适应机制，并初步阐明了人类干扰特别是过度放牧对草原群落建群种和优势种的生态替代或/和灌丛入侵的影响。

During a dry period without rainfall, late fall as the grass is dying off, even an overgrazed pasture can cause your pasture conditions to be at high risk for poisonous plants.

在旱季期间，如果没有降雨，后期下降草死过，甚至是过度放牧，草场可造成你的草场条件，在高风险，为有毒植物。

The sandstorm happened suddenly and lasted for nearly an hour in the overgrazed region near the Inner Mongolia-Gansu Province border, reducing the visibility to less than 2 meters.

倾刻间，遮天蔽日，天昏地暗，能见度不到2米。近1小时的沙尘暴肆虐，给因过度放牧而日渐脆弱的生态再次敲响了警钟。

A way to reduce the damage from overgrazing is to move animals from one field to another.

减少过度放牧的危害的方法是将动物从一片土地迁移到另外一个。

In recent decades, however, overgrazing in forests have caused forest ecosystem degradation, especially in developing countries.

但是，近几十年来的过度放牧已导致许多森林生态系统的退化，在发展中国家尤其如此。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。