6Costanza R, D' arge R, De Groot R, et al. The value of the world's ecosystem services and natural capital. Nature, 1997, 15:253-260.
7Zeng X-G(曾贤刚).Implication,Study on economic evaluation of eia,principle and techniques[J].中国人口．资源与环境,2004,14(2):34-38.
8Maile P, Mendelssohn R. Valuing eeotourism in Madagascar. Environmental Management, 1993, 38 : 213 - 218.
9Layman RC, Boyce JR, Criddle KR, et al. Economic valuation of the chinook salmon sport fishery of the Gulkana River, Alaska, under current and ahernate management plans. Land Economics, 1996, 72:113-28.
10Ward AF. Economics of water allocation to instream uses in a fully appropriated river basin: Evidence from a New Mexico Wild River. Water Resources Research, 1987, 23:381-392.
