Concern over natural ecological environment and cultural landscape is an important research subject of landscape ecology.
对自然生态环境和人类文化景观双重属性的关注是景观生态学的重要研究课题。
This new subject will challenge the previous urban planning concept, energy consumption, ecological environment, economic benefits and the degree of suitable living conditions.
这个课题对城市原来的规划理念、能源消耗、生态环境、经济效益、宜居程度等都提出了新的挑战。
Its research subject is tourism ecosystem which is a compound ecological system of society, economy and nature.
旅游生态学的主要研究对象是旅游生态系统，旅游生态系统是一个社会—经济—自然复合生态系统。
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