水土保持学报2011，Vol.25Issue(4)：217-220,4.
冀北山地华北落叶松林生态系统水化学特征
Precipitation Hydro-chemical Characteristic of North Deciduous Pine of North Mountain of Hebei Province
摘要
Abstract
Because of precipitation serves as one of major approaches of nutrient input into the forest ecosystem,the accurate measurement of its volume and ion concentration is of prime importance in an evaluation of nutrient biogeochemical cycle.The contents of six nutrient elements（Ca,Fe,K,Mg,Mn,Zn） in through-fall,stem-flow and litter water were measured in the larch forest of North Mountain of Hebei Province.The results showed that：（1）Precipitation canopy layers after its hydrochemistry characteristic obviously changed,chemical element content to have the varying degree increase,chemical element content Ca〉K〉Mg〉Fe〉Mn〉Zn,among the growth of most multiples was Mn,but Mn and Zn concentrations had shown negative growth in June.Trunk run off each index all increased a lot,chemical element content CaKMgMnFeZn.Withered falling objects water K and Ca element concentration increased the maximum.（2）The largest variation coefficient was Zn,in the rainfall of atmospheric,was 2.853;the smallest was K and Ca,was 0.158,0.163.Deciduous pine tree trunks through rain,withered stalk flow and variation coefficient were largest in permeable Fe elements for 3.115,Mg elements for 1.288,Fe element for 2.139.（3）Through leaching after samples of each element in the concentration increased,penetrate water,trunk run off and the withered permeable of K and Ca increased considerably,Fe,Zn leached of less.关键词
华北落叶松林/大气降雨/穿透雨/树干茎流/枯透水/养分输入Key words
north deciduous pine/precipitation/through-fall/stem-flow/withered permeable/nutrient input分类
农业科技引用本文复制引用
张伟,杨新兵,李军..冀北山地华北落叶松林生态系统水化学特征[J].水土保持学报,2011,25(4):217-220,4.基金项目
林业公益性行业科研专项子课题“冀北山区典型森林生态系统健康经营技术研究与示范” （）
