Research In Evaluation Of Forest Ecological Value Based On Railway Project

Ecological value is a new concept that result from modern environment revolution.Generally , its meaning is all of survivorship conditions.It include two kinds of ecologicalvalue. On ecological value is static state, in coordination with other evolutions. These aregeneralized ecological value. Forest ecosystem is the biggest, the flawlessest ecosystem, soforest ecological functions typically and overall. The value of forest producting organism,containing water, containing soil, absorbing carbon dioxide and releasing oxygen, resting forpeople, living things'diversification and purifying environment pollution are contained in it.People, especially environmental protectors, pay much attention to how to evaluate anduse ecological value with the developing of practice and use ecological value with thedeveloping of social economic system, putting persistent developing strategy into practice andworking on protecting environment more deeply. Forest ecosystem is the biggest, theflawlessest ecosystem on land in enormous ecosystem, so it is very important for people toevaluate the value of forest ecosystem.At present, there are many researches on it. It's easy to evaluate concrete source valuefor its market price, but it's hard to calculate ecological value. Because ecological valuegenerally doesn't have market price,there isn't an universally accepted, united and flawlessmethod to evaluate it on international up to now. So it is creative on this respect. Now, moreand more linear project are putting into practice in our country. Many forest are occupied inthese projects. This thesis relate to the example of east railway and estimate ecological valueof the occupied forest. The result can provide some references for other linear projects. In thethesis, I consult many books and definite the concept of ecological value and method ofevaluation. According to the result, I raise some analysis about this project and persistentstrategies. These can reduce influence of the project on forest. This thesis can attract morepeople's attention;In addition, this thesis can provide a practical reference and reduce theinfluence of other projects on forest. Then our country's forest ecosystem can have a gooddeveloping and make it can be used persistently in the end.