%0 Journal Article %T 水文周期对纳帕海高原湿地草甸土壤碳素的影响 %T Impacts of hydrological periods on organic matters in Napahai wetlands %A 张昆 %A 田昆 %A 莫剑锋 %A 常凤来 %A 陆梅 %A 李宁云 %A ZHANG,Kun %A TIAN,Kun %A MO,Jianfeng %A CHANG,Fenglai %A LU,Mei %A LI,Ningyun %J 湖泊科学 %J Journal of Lake Sciences %@ 1003-5427 %V 19 %N 6 %D 2007 %P 705-709 %K 纳帕海;草甸;水文周期;湿地土壤 %K Napahai wetlands;meadowa;hydrological periods;wetlands soil %X 综合降水量、蒸发能力、周边高山冰雪融水以及地下水资源的季节性变化特点分析了纳帕海湿地草甸水文周期特征,采用野外采样和室内分析相结合的方法,研究了水文周期对草甸土壤有机质变化的影响.结果表明,纳帕海湿地水文特征中草甸水位的周期性变化显著,并且水文周期对纳帕海湿地的草甸土壤有机质影响显著,其有机质变化表现为在0-20 cm土层呈不规则的"W"型多峰曲线变化,而在20-40 cm土层有机质的变化则为不规则的"N"型.水文周期变化对草甸土壤有机质的驱动过程可采用高斯多峰模型模拟,且拟合效果较为理想. %X Characteristics of hydrrology periods was analyzed according to the seasonal characteristics of precipitation,evaporation,dissolved snow and groundwater, and impacts of seasonal hydrological periods on soil organic matters were studied based on field investigation and laboratory analysis in the meadows of Napahai wetlands. The resulfa showed that water level fluctuated greatly in the meadows and soil organic matters were driven greatly by seasonal hydrology periods.巧namics of organic matters in 0-20cm layer appeared in an anomalous"W " shapewhile"N" shape in 20-40cm layer. The driving processes of soil organic matters in the meadows can be fitted inGauasian model. %R 10.18307/2007.0613 %U http://www.jlakes.org/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0