关键词: 沼泽湿地, 垦殖, 土壤温度, 动态, 土壤呼吸

Abstract: With the Kmeria septentrionalis in Mulun National Nature Reserve of Guangxi as test object, its seed rain and natural germination, growth status of seedlings and young trees, and seed predation by rodents were investigated. The results showed that K. septentrionalis seeds had dormancy character, i.e., didn’t germinate immediately after falling onto the ground until the beginning to the middle ten days of next April. The predation of rodents on seeds (including those on the ground and in the soil) lasted long term, from the initial stage of seed falling to germination. The germination rate of perfect seeds was low, even under the protection of enclosure and no rodent damage. There was a serious obstacle in the natural generation of K.septentrionalis during the development stage from seed to seedling. The low seed germination rate could not satisfy the normal generation of K.septentrionalis.

Key words: Marsh, Cultivation, Soil temperature, Dynamic, Soil respiration