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7 建三江地区不同第四系类型土壤全氮(a)、全磷(b)含量和氮磷比(c)变化 A—全新世冲湖积;B—全新世湖沼积;C—全新世冲积;D—晚更新世冲湖积;E—晚更新世冲积

Fig.7 Changes of soil total nitrogen (a), soil total phosphorus (b) and N/P ratio (c) in different Quaternary types in Jiansanjiang area A—Holocene alluvial lacustrine deposits;B—Holocene lacustrine deposits;C—Holocene alluvium;D—late Pleistocene alluvial lake deposits;E—late Pleistocene alluvium