Lu Guohong, Zhou Li, Zhao Xianli, Jia Qingyu, Xie Yanbing, Zhou Guangshen
Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2006 Mar;17(3):384-9.
With element analyzer, this paper measured the variation of organic carbon and total nitrogen in different soil depths of reed wetland. The results showed that soil organic carbon, total nitrogen, and C/N ratio were decreased gradually with increasing soil depth, and their accumulation peaks were differed with soil layers and months. Soil temperature and moisture and the growth status of reed were the main factors caused the differences. Soil organic carbon was strongly positively correlated with soil total nitrogen content in July, August and October, the R2 being 0.73, 0.73 and 0.71 respectively, but weakly correlated in September. Soil C/N ratio was negatively correlated to soil organic carbon and total nitrogen, but the correlativity was higher with soil total nitrogen than with soil organic carbon, suggesting that soil C/N ratio was more determined by the content of soil total nitrogen.
利用元素分析仪，本文测定了芦苇湿地不同土壤深度有机碳和全氮的变化情况。结果表明，土壤有机碳、全氮及碳氮比随土壤深度增加而逐渐降低，且其积累峰值随土层和月份而异。土壤温度、湿度及芦苇生长状况是造成差异的主要因素。7月、8月和10月土壤有机碳与土壤全氮含量呈极显著正相关，R2分别为0.73、0.73和0.71，而9月相关性较弱。土壤碳氮比与土壤有机碳和全氮呈负相关，但与土壤全氮的相关性高于土壤有机碳，表明土壤碳氮比更多地由土壤全氮含量决定。
