The direct values of Chinese terrestrial surface water ecosystem services in2000were estimated as4263.91×10 8 yuan RMB,and indirect values were5546.92×10 8 yuan RMB.The total value was9810.83×10 8 yuan RMB,and was up to10.97%of the GDP of China in2000.Water ecological services play an even more important role in the society than its products.
Using diverse methods to estimate the economic losses caused by water ecosystem deterioration in the Hai River Basin and referencing the foregoing studies,this paper concludes the economic losses ranged from 0.63 to 16.6 percent of total river basin's GDP in 1999.The authors recommend 7.3 percent of GDP as a reasonable value,which is calculated by the method of Shadow Price.
The sediment dredging in Taihu Lake is a water ecosystem control project with the removal of pollutants as much as possible and improvement of water eco-environment as the objectives, and the ecological dredging is a local thin-stratum fine dredging.
The person water is harmonious is a person and nature to is harmonious to get along with in the person water gate in the department now, the person water is harmonious to prop up the economy society can keep on the environment of good water ecosystem that develop.
528 km in length. Appraisal of service function value of Hainan Island water ecosystem shows that the direct value of water body ecosystem service function is 5209 billion RMB Yuan and the indirect one is 2388 billion RMB Yuan, with the total value being 7597 billion RMB Yuan. It is 1216% of gross domestic product of Hainan Province in 2002.
The purpose of this research is to use Costanza's methods for calculating ecosystem service value (such as market value method, cost expenditure method, shadow engineering method, alternative cost method, opportunity cost method, etc.) to assess and evaluate the ecosystem value in Shenyang City, including forest ecosystem, farmland ecosystem, grassland ecosystem, orchard ecosystem, and water ecosystem.
Northwest Taklamakan desert belongs to arid desert climate of the warm temperate zone. Flora in this region include century Asia component, ancient Mediterranean Sea component, and so on. There are desert ecosystems, natural water ecosystem and oasis ecosystem.