祁连山青海云杉林土壤氮的含量特征.pdf

土 壤 (Soils), 2013, 45(4):616–622 祁连山青海云杉林土壤氮的含量特征① ( 734000) () ①1.78 ~ 7.89 g/kg 1.50 ~ 4.39 g/kg6.33 ~ 24.96 mg/kg 0.37 ~ 23.60 mg/kg5.23 ~ 20.74 mg/kg 0.20 ~ 10.19 mg/kg 70.58%87.58%②0 ~ 1010 ~ 2020 ~ 40 cm (P0.05) 0 ~ 10 cm 10 ~ 20 cm (P 0.05)20 ~ 40 cm (P0.05) 0 ~ 10 cm (P 0.05)10 ~ 20 cm 20 ~ 40 cm (P0.05)③ ④ S714.2 1 000 km200 ~ [7] 500 km- [8] [1] [2-3] [4] [4-5] 90% [6] (201204101-4) (1963)E-mail: zhangxuelong0707@163.com 4 617 2