生态学杂志2011，Vol.30Issue(4)：784-789,6.
武夷山不同海拔植被土壤微生物量N时空变异
Spatiotemporal variation of soil microbial biomass N under different vegetations along an altitude gradient in Wuyi Mountains of Southeast China
摘要
Abstract
In order to understand the spatiotemporal variation of soil microbial biomass N and its main controlling factors in subtropical forest regions in China, 0-10, 10-25 , and 25 -40 cm soil samples were collected from the evergreen broadleaf forest ( EBF, 500 m a, s. l. ) , coniferous forest ( CF, 1200 m a. s. l. ) , subalpine dwarf forest ( DF, 1800 m a. s. l. ) , and alpine meadow ( AM, 2100 m a. s. l. ) along an altitude gradient in the Wuyi Mountains National Nature Reserve, Fujian Province from April 2006 to January 2007. With increasing altitude, the soil microbial biomass N increased significantly, being 106. 7, 140. 8, 254. 9 and 355. 8 mg · kg-1 in 0-10 cm soil layer under EBF, CF, SDF, and AM, respectively, and there was a significant difference (P＜0. 05 ) among different altitudes. Soil microbial biomass N was the highest in 0-10 cm layer, and decreased gradually with soil depth. In the four ecosystems, there was a consistent seasonal variation of soil microbial biomass N, i. e. , the highest in winter, tended to decrease in spring, and the lowest in summer. Correlation analysis showed that in 0-10 cm soil layer, the main factors controlling the spatial variation of soil microbial biomass N along the altitude gradient were soil moisture, organic matter, and total N, while the main factors regulating the temporal variation of soil microbial biomass N were soil moisture and temperature.关键词
武夷山/土壤微生物量N/时空变异分类
农业科技引用本文复制引用
王国兵,王丰,金裕华,汪家社,阮宏华..武夷山不同海拔植被土壤微生物量N时空变异[J].生态学杂志,2011,30(4):784-789,6.基金项目
国家自然科学基金项目(30670313)和南京林业大学高学历人才基金项目(163010063)资助. （30670313）
