究其原因主要是不适当灌溉，植被破坏和海水内侵。
The occurrence of salinization are mainly due to unsuited irrigation, plant community damage and seawater intrusion.
其存在的重要问题是：水资源匮乏，植被破坏严重，覆盖率低等；
There are main eco-enviromental problems of short of water resource, vegetation destruction and lower vegetation cover.
由于人类的活动使植被破坏，是当今许多内陆地区雨量稀少、气候干旱的根本原因。
The vegetation breakdown due to man's activities is the fundamental cause of the rainfall reducing and dry climate in inland area.
由于长期的植被破坏和严重的水土流失黄土高原土壤环境的恶化是无容置疑的事实。
It is a indubitable fact that the deterioration of soil environment in loess plateau is caused by the long — standing destruction of vegetation and the serious erosion of soil and water.
探讨了长距离输气管道工程埋设过程中造成的带状植被破坏后的恢复监测验收方法。
The acceptance method, used to monitor recovery of banded plant destroyed in the process of laying long-distance natural gas pipeline, is discussed in the paper.
喀斯特区由于土层薄、土壤允许流失量低，生态系统十分脆弱，植被破坏后难以恢复。
Because of thin solum and lower soil loss tolerance, the ecosystem in Karst region is very fragile. The vegetation is difficult to recover after destruction.
植被破坏加速侵蚀过程及其导致的土壤质量退化是土壤侵蚀环境效应评价的重要内容。
Accelerated erosion process and soil degradation caused by deforestation is important research topic in soil erosion effect assessment.
大青山地区环境恶劣、植被破坏严重，利用菌根生物技术实现植被恢复是一个重要方向。
Nevertheless , to obtain the native mycorrhizal fungus species becomes the key to the recovering of plants and the improvement of environment with that technology.
由于人类活动的影响，植被破坏的规模和速度都在不断增大，由此也带来了一系列的环境问题。
Owing to the effect of human action, the scale and speed of vegetation breakage is continued aggrandizement, thereout it bring a series of environment problem.
文章分析了蜚克图河流域工程建设、林草植被破坏、土壤侵蚀、水质污染、超负荷用水等使流域生态系统面临的威胁。
The paper analyses the stress faced by the ecological system of Feiketu river basin due to project construction, vegetation damage, soil erosion, water pollution and overburden water use.
西南喀斯特地区的环境脆弱性只是土壤严重侵蚀退化的前提或内因，日益尖锐的人地矛盾导致的植被破坏和退化才是喀斯特土壤侵蚀退化的关键驱动力。
Environmental fragility is only the premise of severe soil degradation, but vegetation damage induced by destructive human-soil interaction is the key driving force, or "the last straw".
他们只是在做为防止植被遭大规模破坏而必须做的事情。
They are only doing what is necessary to prevent wholesale destruction of vegetation.
2007年以来由于火山的活动，频繁降下的酸雨破坏了山顶西南部大片植被，并致其死亡，因此在照片上呈现棕色和橘色。
Since 2007, frequent acid rain showers caused by activity at the volcano killed or damaged much of the vegetation to the southwest of the summit, leaving the area brown and orange.
因为森林大火或者人类改造活动而造成当地山坡上植被遭到严重破坏的地区在遭遇大雨或大雨后最容易发生山体滑坡。
Areas where wildfires or human modification of the land have destroyed vegetation on slopes are particularly vulnerable to landslides during and after heavy rains.
在寻求资源的时候，富国(和公司)经常破坏穷国环境——砍伐它们的森林，破坏它们的植被并且污染它们的水源。
In their quest for resources rich nations (and corporations) have too often devastated poor ones - destroying their forests, eroding their land, and fouling their water.
约20%的巴西热带雨林已遭破坏，巴西75%的温室气体排放是因植被燃烧和砍伐后残木的腐烂而产生的。
About 20% of the Brazilian rainforest has already been destroyed, and 75% of Brazil's greenhouse gas emissions are estimated to come from forest clearing as vegetation burns and felled trees rot.
在建造安置点的过程中，应当注意尽量减少对植被和表层土的破坏。
During construction of the camp, care should be taken to cause as little damage as possible to the vegetation and topsoil.
指出正是由于不合理的人类活动，对汾河上游流域的环境产生了重大的影响，造成了植被的破坏、野生动物濒临绝迹、水土流失和土地退化的加剧。 。
Secondly, , wild animals lost their natural living environment owing to vegetation destruction, so some animals now become rarer and rarer besides of macro-animals being extinct, and so on.
到了1970年代，这些都是造成广泛破坏植被。
By the 1970s, these were causing extensive damage to vegetation.
现在的地球，沙漠化非常严重，植被日益破坏，绿色大量减少，怎么回事？
Now the Earth, desertification is very serious, growing vegetation damage, a significant reduction in green, how is it?
这一历史时期，文峪河上游植被的破坏，直接导致了流域生态环境恶化。
During this period, the destruction of the vegetation in Wenyu drainage area leads to the ecology environment depravation of the area.
缺乏煮食燃料可很快导致营地附近植被被破坏，造成和当地人的冲突。
A lack of cooking fuel can quickly lead to destruction of the vegetation around the camp and friction with the local population.
其原因是陕北在自然植被被破坏以前，当时的人们对鱼并不陌生，由鱼及女阴的相类联想。
The reason is that natural vegetation in northern Shaanxi were destroyed before the fish was no stranger to the people, by the female fish and similar association.
垦荒导致地表植被、土体结构破坏，使区域内生态环境日趋恶化。
Waste land reclamation leads to destroy of vegetation and soil structure, deteriorate local ecological environment day by day.
西夏时期气候寒冷、干燥，人们砍伐森林，开垦土地，境内植被有所破坏。
Xixia period weather is cold and dry, people take on deforestation, land reclamation and destruction of vegetation appeared.
西夏时期气候寒冷、干燥，人们砍伐森林，开垦土地，境内植被有所破坏。
Xixia period weather is cold and dry, people take on deforestation, land reclamation and destruction of vegetation appeared.
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