洪泛区湿地土壤-植物系统氮含量与气候因子灰色关联分析

文章以二百方子洪泛区湿地为例，运用灰色关联分析方法探讨了洪泛区温地土壤一植物系统氮含量变化与气候因子之间的关系。结果表明，二百方子湿地土壤氮素含量与月平均风速、月日照时数和月蒸发量的关联性较密切；芦苇地上部分氮素含量与月日照时数、月蒸发量和月平均风速关联较密切，而芦苇地下部分氮含量则与月平均降水量、月蒸发量和月平均气温关联较密切。

Grey Correlation Analysis Between Nitrogen Contents in Soil-Plant Systemnd Climatic Factors in a Floodplain Wetland

Erbaifangzi wetland was chosen as a study area in order to study the relationship between climatic factors and nitrogen contents in the floodplain wetland ecosystem using grey correlation analysis method. Results showed that there were closely grey correlations between nitrogen contents in marsh soils and the monthly mean wind speed, monthly sunshine hours and monthly transpiration. As for nitrogen contents in the reeds, the closely grey correlation was also observed between nitrogen contents in aboveground organs of the reeds（ leaves, sheath,stem etc. ）and the monthly sunshine hours, monthly transpiration and monthly mean wind speed. However, nitrogen contents in the underground organs of the reeds （ shoots and rhizome） had closely grey correlation with the monthly precipitation, monthly transpiration and monthly mean air temperature.