| Take the Jiufeng country forest park as research ground, by analyzing the variation of composing and content of aerial-plant's volatile organic compounds (VOCs) with times and spaces, we probe into the pertinence between the variation and visitors' activities; And put forward protective measures to tourism environment on this foundation. It is propitious to instruct forest tourism development and management, to promote forest tourism sustainable development.The forest park can be divided into three areas bases on human's active frequency: the activity area, the buffer area and the inactivity area. By using TCT-GC/MS to analyze volatile organic compounds in ambient air in Jiufeng country forest park ,we detected 175 species totally. They contains 7 main composings: the alkanes , the arenes, the esters, the organic acids, the aldehydes , the ketones, and the terpenoids, the relative contents separately are 48.11%, 15.67%. 17.28%, 3.13%, 3.17%, 1.36%, 1.45%; In the activity area, we detected the VOCs species is the most, the buffer area secondly, and the inactivity area minimally, which is consistent with the human's active frequency of each area. The alkanes' relative contents is maximal in aerial VOCs of each ampling area, and is the steadiest composing in aerial VOCs; The arenes, the esters and the organic acids' relative contents changes largerly, there seasonal and annual variation are obvious; the aldehydes, the ketones and the terpenoids are occupy a small proportion in aerial VOCs.Visitors' activities make a obvious impact on aerial of VOCs. There are most visitors in Apr., Oct. and Nov., and the alkanes' variation is the most obvious in these months. The relative content largely reduced, the minimum dropped to 14%, and the monthly largest decrease up to 55%. The six other compounds show a large upward trend. It indicated that aerial-plants'VOCs were susceptible to be impacted by the surrounding. Visitors' activities make a obvious impact on the aerial-plant' VOCs. |
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