原始红松林穿透雨和树干茎流养分特征研究  

Nutrient Characteristics of Through-all and Stem-flow in Virgin Forest of Pinus koraiensis

作　　者：盛后财[1] 蔡体久[1] 朱道光[2] 李华[1] 武秀娟[1] 

机构地区：[1]东北林业大学林学院,黑龙江哈尔滨150040 [2]黑龙江省科学院自然资源与生态研究所,黑龙江哈尔滨150040

出　　处：《水土保持学报》2008年第5期47-51,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金(30771713);中日合作项目“黑龙江支流域生物地球化学过程研究”

摘　　要：对小兴安岭原始红松林穿透雨和树干茎流中的K,Ca,Mg,Mn,Fe共5种养分元素进行了测定,结合水量分配比例,计算了各元素在森林中的净输入量。结果表明:⑴原始红松林穿透雨和树干茎流中,除Fe元素外,所有浓度值均有树干茎流>穿透雨>大气降雨;从各元素平均浓度来看,Ca元素最高,Fe元素最低,其排序为:Ca>K>Mg>Mn>Fe。⑵大气降雨年平均浓度中,K元素变动系数最大,为1.514,Ca元素最小,为0.827;原始红松林穿透雨、树干茎流年平均浓度中变动系数最大的元素分别为Mn,Mg(或Fe);变动系数最小的元素分别为Ca,Mn;各元素年平均浓度的变异系数均为大气降雨>穿透雨>树干茎流。⑶原始红松林各元素净输入量排序为:K>Ca>Mg>Mn>Fe,且Fe元素的净输入量为负值。The contents of five nutrient elements （K, Ca, Mg, Mn, Fe） in through-fall, stem-flow were measured in the Pinus koraiensis virgin forest of Xiaoxing＇an Mountains,and according to the allotment of water amount, net input-quantity of each element in the forest was calculated,the results showed that. （1）The contents of nutrient elements in precipitation,through-fall, and stem-flow were all had the decreased order of stem-flow〉through-fall^precipitation except of Fe. The average contents of different nutrient elements were in the decreased tendency of Ca〉K〉Mg〉Mn〉Fe. （2）The biggest coefficient of variation （Cv） in precipitation was 1. 514 for K element and the least one was 0. 827 for Ca element. The biggest Cv of nutrient elements in through-fall,stem-flow of the Pinus koraiensis virgin forest were Mn, Mg, and Fe,and the least were Ca, Mn. The average contents of the five nutrient elements＇ Cv in precipitation, through-fall,and stemflow had the decreased tendency of precipitation 〉 through-fall 〉 stem-flow. （3）The net input-quantity of nutrient elements in the Pinus koraiensis virgin forest was as follows. K〉 Ca〉 Mg〉 Mn〉Fe, furthermore, the net input-quantity of Fe in Pinuskoraiensis virgin forest was negative.

关 键 词：原始红松林 大气降雨 穿透雨 树干茎流 养分输入 

分 类 号：S715.2[农业科学—林学]