摘要
松嫩平原西部盐沼湿地水环境碱化程度高 ,水中的 p H值普遍高于 8.0 ,多数为苏打钠型水。在对本区盐沼基本水环境化学特征阐述的基础上 ,通过对水化学的基本变量 CO3 2 -、HCO3 2 -、 Cl-、 Ca2 + 、 Mg2 + 、 SO42 -、 Na+ 和派生变量 (Cl-+SO42 -) / HCO3 2 -及 Na+ / (Ca2 ++Mg2 + )等的相关分析 ,得出各水化学变量之间的相关关系 ,并以 p H值为分类基础得到了判别函数和判别区域图 ,对区域盐沼湿地水环境化学特征的研究方法作出了有意义的尝试。
In the west of Songnen Plain , the saline alkali degree is high in saline water body and marsh where pH value is generally over 8 0, and the chemical type of water is HCO 3 2- -Na +. Through analysis on the basic saline alkali variables such as O 3 2- , HCO 3 2- , Cl -, Ca 2+ , Mg 2+ , SO 4 2- , Na + etc. and the composed variables such as (Cl -+SO 4 2- )/HCO 3 2- and Na +/(Ca 2+ +Mg 2+ ), the relationships between different variables were found, and the discriminating function and critical region map were got basing on the pH value, by which the significant study method on saline alkali water body was attempted.
出处
《地理研究》
CSCD
北大核心
2000年第2期113-119,共7页
Geographical Research
基金
中国科学院湖沼基金!(二期 )资助项目 ( zkhz- 2 - 3)
关键词
盐沼湿地
水化学特征
相关分析
判别分析
水环境
salt marsh
chemical characteristics of water
correlation analysis
discriminatory analysis
