By comprehensive utilization of biogas rural economics and eco - environmental sanitation can be improved and good ecological cycle can be formed.
开展沼气综合利用，能够促进农村生态环境的良性循环，改善农村环境卫生条件。
Session 4 points out the limitation of tourism geography, environment economics, tourism economics and landscape ecology in the eco-tourism planning.
本章第四节分别指出了旅游地理学、环境经济学、旅游经济学和景观生态学在生态旅游规划与管理中的矛盾和局限性。
Session 4 points out the limitation of tourism geography, environment economics, tourism economics and landscape ecology in the eco-tourism planning.
本章第四节分别指出了旅游地理学、环境经济学、旅游经济学和景观生态学在生态旅游规划与管理中的矛盾和局限性。
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