Wu Gang, Jiang Ping, Wei Jing, Shao Hongbo
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Colloids Surf B Biointerfaces. 2007 Nov 15;60(2):250-7. doi: 10.1016/j.colsurfb.2007.06.022. Epub 2007 Jun 28.
Biomass and nutrients were investigated in 2003, 2004 and 2005 growing seasons by using a chronosequence of five vegetation types in alpine tundra on Changbai Mountains. The objective of this study was to test whether nutrients at biointerfaces were significant differences among five vegetation types. The biomass and elevation are highly related (biomass=-237.3ln(elevation)+494.36; R(2)=0.8092; p<0.05). There were no significant differences in phosphorus (P) and sulphur (S) concentrations of roots, stems and leaves among five vegetation types while there are significant differences in nitrogen (N) and P stocks of roots, stems and leaves and in S stock of stems and leaves among typical alpine tundra vegetation (TA), meadow alpine tundra vegetation (MA), and swamp alpine tundra vegetation (SA) (p<0.05). Vegetation nutrients stock is averagely 72.46kg hm(-2), and N, P, S stocks are 48.55, 10.33 and 13.61kg hm(-2), respectively. Soil N and S concentrations in MA are significantly higher than those in other four soil types. P is higher in SA (p<0.05). Soil nutrients stock (0-20cm) is averagely 39.59t hm(-2), and N, P, S stocks are 23.74, 5.86 and 9.99t hm(-2), respectively.
2003年、2004年和2005年生长季，利用长白山高山冻原五种植被类型的时间序列对生物量和养分进行了调查。本研究的目的是检验生物界面的养分在五种植被类型之间是否存在显著差异。生物量与海拔高度高度相关（生物量 = -237.3ln(海拔)+494.36；R² = 0.8092；p<0.05）。五种植被类型的根、茎和叶中磷（P）和硫（S）的浓度没有显著差异，而典型高山冻原植被（TA）、草甸高山冻原植被（MA）和沼泽高山冻原植被（SA）的根、茎和叶中氮（N）和磷的储量以及茎和叶中硫的储量存在显著差异（p<0.05）。植被养分储量平均为72.46kg·hm⁻²，氮、磷、硫储量分别为48.55、10.33和13.61kg·hm⁻²。MA土壤中的氮和硫浓度显著高于其他四种土壤类型。SA中的磷含量更高（p<0.05）。土壤养分储量（0-20cm）平均为39.59t·hm⁻²，氮、磷、硫储量分别为23.74、5.86和9.99t·hm⁻²。
