摘要
在盐城海滨湿地不同植被带下采集土壤样品,研究了土壤有机碳和全氮的空间分布特征,分析了盐沼植物对湿地土壤碳、氮分布的影响.结果表明:在盐城海滨湿地,表层土壤中有机碳和全氮含量分别介于1.71~7.92g·kg-1和0.17~0.36g·kg-1之间,变幅较大,不同植被带之间存在显著差异,且各植被带表层土壤中有机碳、全氮含量均高于光滩.垂直方向上,各植被带土壤中有机碳、全氮的分布均呈自表向下逐渐降低的趋势,15cm以下其含量基本保持稳定.土壤有机碳与全氮、碳氮比呈显著正相关,但全氮与碳氮比无显著相关性.
Soil samples under different salt marsh vegetations in Yancheng coastal wetland were collected, and their organic carbon (C) and total nitrogen (N) were determined, aimed to analyze the influence of salt marsh vegetation on the spatial distribution of soil carbon and nitrogen. The results showed that the organic C and total N contents in top soils varied from 1.71 to 7.92 g · kg^-1 and from 0. 17 to 0. 36 g · kg^-1, respectively, and there were significant differences among different vegetation zones. The top soils organic C and total N contents in vegetation zones were higher than those in mudflat without vegetation. In the soil profiles in vegetation zones, organic C and total N contents had a trend of decreasing with depth, but changed little below the depth of 15 cm. Soil organic C was significantly positively correlated with soil total N and C/N, but soil total N had no significant correlation with soil C/N.
出处
《应用生态学报》
CAS
CSCD
北大核心
2009年第2期293-297,共5页
Chinese Journal of Applied Ecology
基金
江苏省近海资源调查与评价专项资助项目(JS-908-07-07)
关键词
有机碳
全氮
盐沼植被
空间分布
海滨湿地
organic carbon
total nitrogen
salt marsh vegetation
spatial distribution
coastal wetland.