Du lịch thường được coi như là một nguồn chính của tăng trưởng kinh tế, và chính phủ các nước thường đầu tư vào cơ sở hạ tầng để thúc đẩy du lịch và Du lịch bổ sung các khoản thu nhập ngoại hối đã được bắt nguồn từ thương mại hàng hoá và đôi khi tài chính | 86 The economics of tourism and sustainable development where LT takes its steady state value. This expression is always positive since a the denominator is positive since when steady state condition is satisfied then 1 - Lt TR Lt - vTR Lt NTR Lt - 1 - Lt NtR Lt - gp y 0 T b tTR Lt NTR Lt 0 since LT in the steady state of the optimal solution is always below the golden rule. c tTR Lt nTr Lt 0. d tTR Lt NTR Lt gp ọ since in Appendix I it is shown that LT in the steady state of the optimal solution is below L where tTR L NTR L gp ọ and moreover TR Lt 0 and NTR Lt 0. 4. Tourism increasing returns and welfare Jean-Jacques Nowak Mondher Sahli and Pasquale Sgro 1. INTRODUCTION Tourism has often been regarded as a major source of economic growth and governments often invest in infrastructure to promote tourism and Tourism supplements the foreign exchange earnings already derived from trade in commodities and sometimes finances the imports of the capital goods necessary for the growth of the manufacturing Tourism has also been regarded as a mechanism for generating increased income and employment both in the formal and informal Hazari and Ng 1993 have also highlighted important differences between trade in commodities and However international tourism has also at times been considered an activity that imposes costs on the host country. Much attention in this context has been paid to inflationary and low multiplier effects of tourism expansion 5 increased pollution congestion and despoilation of fragile environments 6 intra-generational inequity aggravation7 and even to adverse sociocultural Less obvious but more important costs of tourism have often been neglected such as the adverse impacts of a tourism boom on other sectors resulting from general equilibrium effects. However theoretical and empirical studies tell us that these effects can be quite substantial and have to be taken into account when assessing the net .
