建三江地区土壤氮磷生态化学计量空间异质性特征及其影响因素分析

房娜娜, 杨泽, 刘国栋, 戴慧敏, 刘凯

Spatial heterogeneity and influencing factors of the ecological stoichiometry of soil nitrogen and phosphorus in the Jiansanjiang area

FANG Na-Na, YANG Ze, LIU Guo-Dong, DAI Hui-Min, LIU Kai

图8 建三江地区不同地貌类型土壤全氮(a)、全磷(b)含量和氮磷比(c)变化 A—冲洪积浅丘状砂砾石台地;B—冲洪积沙土漫滩阶地;C—冲积-湖积低平原;D—冲积微起伏低平原;E—构造剥蚀丘陵

Fig.8 Changes of soil total nitrogen(a), soil total phosphorus(b) and N/P ratio(c) in different geomorphic types in Jiansanjiang area A—alluvial-diluvial shallow mound sandy gravel platform;B—alluvial-diluvial sandy floodplain terrace;C—alluvial-lacustrine low plain;D—alluvial undulate low plain; E—tectonically denuded hills