摘要:The Travel Cost Method (TCM) has a relatively chequered history as a non- market technique for the estimation of recreational bene.ts. Its origins can be traced back to 1947 when Harold Hotelling wrote a brief letter to the Director of the USA National Parks Service. In it, he sketched out a possible way `to set up appropriate measures for evaluating, with reasonable degree of accuracy, the service of national parks to the public' in less than a page. From this little thing, big things certainly have grown. The growth has been both in the scale of application and the complexity of the method.