海拔对马衔山生态系统土壤-微生物碳氮磷计量特征的影响
李玉倩, 王旭洋, 林宏东, 牟晓明, 刘伟媛, 连杰, 李玉强

Effects of altitude gradient on soil microbial carbon, nitrogen and phosphorus stoichiometric characteristics in Maxian Mountain ecosystem
Yuqian Li, Xuyang Wang, Hongdong Lin, Xiaoming Mou, Weiyuan Liu, Jie Lian, Yuqiang Li
表2 不同海拔植被条件下土壤基本理化性质
Table 2 Basic physical and chemical properties of soil at different elevations
因子高山草原(AG)亚高山灌丛(SS)高山灌丛(AS)高山草甸(AM)
温度/℃0~20 cm29.37±6.30a22.88±1.09b20.07±2.44b18.30±4.90b
20~40 cm29.25±6.30a22.67±1.01b19.78±2.51b17.75±4.53b
地下生物量/g0~20 cm18.15±7.62a12.46±5.88a20.86±6.89a44.13±56.48a
20~40 cm4.33±2.24a4.55±4.53a7.02±7.24a7.83±16.89a
容重/(g·cm-30~20 cm2.19±0.33a1.49±0.57bc1.16±0.16c1.83±0.36ab
20~40 cm2.71±0.46a1.98±0.66b1.61±0.31b2.03±0.19b
含水率/%0~20 cm9.37±4.48b36.12±24.91a48.76±13.92a51.54±6.74a
20~40 cm6.86±1.11c26.54±16.10b40.39±9.38ab43.17±14.71a
pH0~20 cm8.12±0.06a7.11±0.21b6.78±0.11c6.08±0.15d
20~40 cm8.30±0.05a7.34±0.29b6.88±0.09c6.29±0.07d
电导率/(S·m-10~20 cm115.42±5.22a83.42±17.53b93.80±14.27b114.92±17.88a
20~40 cm126.98±12.65a73.82±13.58b72.18±14.25b63.87±12.18b
砂粒(w/w)/%0~20 cm14.78±4.08ab8.10±1.92b8.62±3.81b18.22±10.50a
20~40 cm14.32±4.86a6.53±2.28b8.73±4.88b8.20±4.92b
黏粉粒(w/w)/%0~20 cm85.22±4.08ab91.90±1.92a91.38±3.81a81.78±10.50b
20~40 cm85.68±4.86b93.47±2.28a91.27±4.88ab91.80±4.92a