摘要
对黑龙江省东部山地白桦人工林生态系统的大气降水、穿透水、树干茎流和地表径流中的pH值、溶解氧、浊度、总溶解固体、电导率、氧化还原电位、K、Na、Ca、Mg、Cu、Zn、Mn和Fe等水质指标进行了测定。结果表明:大气降水经过白桦人工林生态系统后,浊度和总溶解固体值逐渐升高。穿透水除Ca元素外,其他化学元素含量均有不同程度的增加,化学元素含量排序为:K>Ca>Na>Mg>Mn>Fe>Zn>Cu。树干茎流中各化学元素含量排序为:K>Ca>Mg>Na>Fe>Mn>Zn>Cu。地表径流中各化学元素含量为:K>Ca>Na>Mg>Fe>Mn>Zn>Cu。除Na、Ca元素外,大气降水中其他元素的变异系数均较大。穿透水和树干茎流中Cu元素的变异系数大于其他元素,地表径流中Zn元素的变异系数最大。根据淋溶系数的大小排列,穿透水中各化学元素的淋溶序列是:Mn>K>Mg>Fe>Cu>Zn>Na>Ca。树干茎流中各化学元素的淋溶序列是:K>Mn>Mg>Fe>Cu>Zn>Ca>Na。经过淋洗后,穿透水和树干茎流中K和Mg元素增加较多,Ca元素出现负淋溶。
The water quality of rainfall, throughfall, stemflow and runoff in Betula platyphylla plantations at moun- tainous region in east Heilongjiang Province was studied. The water quality indexes, including pH, DO, TURB, TDS, COND, ORP, K, Na, Ca, Mg, Cu, Zn, Mn and Fe were analyzed. There was a gradual increase in TURB and TDS of rainfall after passing through the forest canopies. With the exception of Ca, there were different degrees of increase in other chemical elements in the throughfall. The content of chemical elements in throughfall followed the order of K 〉 Ca 〉 Na 〉 Mg 〉 Mn 〉 Fe 〉 Zn 〉 Cu. The content of chemical elements in stemflow followed the or- der of K 〉 Ca 〉 Mg 〉 Na 〉 Fe 〉 Mn 〉 Zn 〉 Cu. The content of chemical elements in runoff followed the order of K 〉 Ca 〉 Na 〉 Mg 〉 Fe 〉 Mn 〉 Zn 〉 Cu. The variance coefficient of elements in rainfall was higher except Na and Ca. The variance coefficient of Cu was higher than other elements in throughfall and stemflow. And the variance coeffi- cient of Zn was the highest in runoff. The leaching coefficient of the elements in throughfall was observed to be in the following order： Mn〉K〉Mg〉Fe〉Cu〉Zn〉Na〉Ca. The order for stemflow was K〉 Mn〉Mg〉 Fe〉Cu〉Zn〉Ca〉Na. After leaching, K and Ca increased in throughfall and stemflow.
出处
《林业科学研究》
CSCD
北大核心
2013年第3期287-291,共5页
Forest Research
基金
国家自然科学基金项目(31070629)
黑龙江省教育厅科学技术研究项目(11553033)
中央高校基本科研业务费专项资金项目(DL09BA29)
东北林业大学青年科研基金项目(09052)资助
关键词
白桦人工林
水质
穿透水
树干茎流
地表径流
Betula platyphylla plantations
water quality
throughfall
stemflow
runoff
