马尾松林土壤呼吸对去除和添加凋落物处理的响应

doi:10.11707/j.1001-7488.20090105

Abstract

Abstract:

Abstract: We evaluated the impact of litterfall on soil respiration under a Pinus massoniana plantation in Tianjiling National Forest Park of Changsha, Hunan, using a field study with litterfall exclusion and addition in a full factorial design. Soil respiration was measured using an infrared gas exchange analyzer (LI_COR 6400-09) from January to December 2007. There was similar respiration curve with seasons between litterfall exclusion and addition treatment and the control. Soil respiration rate ranges of litterfall exclusion, litterfall addition and control were 34.45～321.16、61.26～649.44 and 38.6～466.49 mgCO₂m^-2h^-1, respectively. The annual mean soil respiration rates were 175.18、310.36 and 234.97 mgCO₂m^-2h^-1, respectively. On average, soil respiration was significantly decreased by litter exclusion, about 24.96% lower to control in Pinus massoniana plantation. On the other hand, litter addition significantly increased soil respiration by 27.36% in Pinus massoniana plantation compared with the control. The Q₁₀ values of the soil respiration in litter exclusion, litter addition and the control plots were respectively 2.16, 2.56 and 2.13.

Key words: Key words: soil respiration, Pinus massoniana plantation, litterfall, soil temperature, soil water, Q₁₀ value

Wang Guangjun;Tian Dalun;Yan Wende;Zhu Fan;Li Shuzhan. Response of Soil Respirations to Litterfall Exclusion and Addition in Pinus massoniana Plantation in Hunan, China[J]. Scientia Silvae Sinicae, 2009, 12(1): 27-30.

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Response of Soil Respirations to Litterfall Exclusion and Addition in Pinus massoniana Plantation in Hunan, China

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