求翻译：经济有效性是指人们在积极发展旅游经济时,应最有效地利用生态资源。生态安全性是指人们在组织旅游经济活动时,应该有效地保护自然生态系统和自然资源,使之保持存在和再生的能力。是什么意思？

Cost-effectiveness refers to the positive development of people in the tourism economy should be the most effective use of ecological resources. Ecological security is that people in the organization of tourism in economic activities, should effectively protect natural ecosystems and natural resourc

Economic Validity means that it is in active development of tourism economy, should be the most effective use of ecological resources. ecological security means that people in organizations, tourism economic activity should be effective in protecting the natural ecosystems and natural resources to m

The economical validity is refers to the people when develops the traveling economy positively, should effectively use the ecology resources.The ecology security is refers to the people when the organization traveling economic activity, should effectively protect the natural ecosystem and the natura

Economic efficiency means when people are actively developing tourist economy, should be the most effective use of ecological resources. Ecological safety refers to the people in the tourism economy activities, should be effectively protected natural ecosystems and natural resources, to keep existin

The economic validity means when people are developing tourist economy actively, should utilize ecological resources most effectively. The ecological security means when people are organizing the economic activity of travelling, should protect natural ecosystem and natural resources effectively, abi