Bai Junhong, Deng Wei, Zhu Yanming, Luan Zhaoqing, Zhang Yuxia
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China.
Ying Yong Sheng Tai Xue Bao. 2003 Sep;14(9):1494-8.
This paper studied the spatial distribution characteristics and ecological effects of organic carbon and nitrogen in soils of Huolin River catchment wetland in horizontal and vertical levels. The results showed that the differences of horizontal and vertical distribution of organic carbon and nitrogen were very obvious, and of all the factors such as the period of wetting and drying cycles, leaching, plant and flood etc., the period of wetting and drying cycles was contents the critical one, which caused the differences. Soil organic carbon was significantly correlated with soil nitrogen (r = 0.977). The ratio of carbon and nitrogen (C/N) changed along with the humidity gradient, and soil pH values obviously influenced the concentration of organic carbon and nitrogen. The correlation of C/N values and organic carbon and nitrogen contents in wetland soil and in grassland soil were remarkably different, and the ecological effects mainly included production effect and clarification effect.
本文研究了霍林河流域湿地土壤有机碳和氮在水平和垂直层面上的空间分布特征及生态效应。结果表明，有机碳和氮的水平与垂直分布差异非常明显，在干湿循环周期、淋溶、植物和洪水等所有因素中，干湿循环周期是导致差异的关键因素。土壤有机碳与土壤氮显著相关（r = 0.977）。碳氮比（C/N）随湿度梯度变化，土壤pH值明显影响有机碳和氮的浓度。湿地土壤和草地土壤中C/N值与有机碳和氮含量的相关性显著不同，其生态效应主要包括生产效应和净化效应。
