Effects of Short-term Enclosure on Soil Respiration Rate of Sub-alpine Meadow in Northwestern Yunnan

doi:10.11924/j.issn.1000-6850.2013-3101

Abstract

Abstract: In our experiment, we study soil respiration, soil temperature and soil water content as well as vegetation coverage of sub-alpine meadow in northwestern Yunnan Province after two-year enclosure in order to learn short-term enclosure effects. The results showed that short-term enclosure not only significantly increased the soil respiration rate in both spring and summer, but also significantly improved vegetation coverage when compared with the control. In the spring, short-term enclosure had no significant effect on soil temperature (P>0.05), whereas it was significantly improved in summer (P<0.01). According to correlation analysis between the soil respiration, soil temperature and soil water content, no significance was observed in both spring and summer after short-term enclosure. However, significant negative correlation was observed between soil temperature and soil water content of alpine meadow without fencing (P<0.05).

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