修改一篇文章,急Desertification is the gradual transformation of hab

修改一篇文章,急
Desertification is the gradual transformation of habitable land into desert.Desertification is not the advance of deserts; it is the process of land degradation resulting from human factors and environmental change.Environment and economy are interrelated and interact on each other.With the developing economy,people often care nothing but economic worth of environmental resources,and forget the intrinsic ecology meaning of environments that mankind depend on for existence.It will cause city develop give an serious impact to environment more and more; consequently,it will produce the result of deterioration of the environment.Desertification has many adverse effects,such as ecological.Moreover,desertification is the serious environmental and social economy problems.It also has been recognized as a major threat to biodiversity.Desertification is increasingly serious in the world.
In China,desertification has been a big environment problem which is highly paid attention to by government,especially the desertification in northern China,because desertification is mainly distribute in northern China.By the end of 2003,land desertification in China has 2.674 million square kilometers,accounting for 27.9% of the total land area,covering 18 provinces and the 471 cities .Caused by desertification every year in direct economic losses amounted to more than 540 billion yuan .The rate of annual expansion of desertification is 3,436 square kilometers.With increasingly frequent dust storms,desertification has drawn increasing attention.

修改后：
Desertification is the gradual transformation of habitable land into desert.It is not the advance of deserts but rather a process of land degradation resulted from human influences and environmental changes.Environment and economy are interrelated and interact with each other.With the developing economy,people often focus solely on the economic worth of environmental resources,and forget the intrinsic ecological meaning of the environment that mankind depend on for survival.This usually lead to city development projects that would have an increasingly serious impact on the environment.Consequently,it will result in environmental deterioration.Desertification has many adverse effects,not only just ecological problems but serious environmental and social economy ones as well.It also has been recognized as a major threat to biodiversity.Desertification is becoming more and more severe in the world.
In China,desertification has been a big environment problem which is regarded as of top most importance by the government,especially the desertification in northern China.By the end of 2003,land desertification in China has increased to 2.674 million square kilometers,accounting for 27.9% of the total land area,covering 18 provinces and the 471 cities.Economic losses caused directly by desertification every year amount to more than 540 billion RMB.The expansion rate of desertification is 3,436 square kilometers annually,and with increasingly frequent dust storms,desertification has drawn increasing attention.
天上~
注：元虽说翻译成yuan中国人都懂,但是外国人习惯管中国货币叫做RMB.