CAJ | 학술논문

以蒙古栎（ Quercus mongolica）林、杂木林和胡桃楸（ Juglans mandshurica）林3种天然次生林土壤为研究对象，通过对生长季节内土壤微生物生物量碳、氮质量分数以及土壤微生物呼吸速率的测定，探讨辽东山区土壤微生物生物量碳、氮质量分数的季节变化以及与土壤微生物呼吸间的关系。结果表明：次生林群落土壤微生物生物量碳、氮均具明显的季节变化，生长季内呈单峰曲线形状，于7、8月份达到最大值；生长季内，蒙古栎林微生物生物量碳质量分数最高，胡桃楸林微生物生物量最低，但二者间差异不显著。土壤微生物生物量氮质量分数大小顺序与微生物量碳一致，胡桃楸林土壤微生物生物量氮质量分数显著低于蒙古栎林和杂木林；3种次生林群落土壤微生物生物量碳、氮质量分数均与土壤微生物呼吸具有线性关系。
이몽고력（ Quercus mongolica）림、잡목림화호도추（ Juglans mandshurica）림3충천연차생림토양위연구대상，통과대생장계절내토양미생물생물량탄、담질량분수이급토양미생물호흡속솔적측정，탐토료동산구토양미생물생물량탄、담질량분수적계절변화이급여토양미생물호흡간적관계。결과표명：차생림군락토양미생물생물량탄、담균구명현적계절변화，생장계내정단봉곡선형상，우7、8월빈체도최대치；생장계내，몽고력림미생물생물량탄질량분수최고，호도추림미생물생물량최저，단이자간차이불현저。토양미생물생물량담질량분수대소순서여미생물량탄일치，호도추림토양미생물생물량담질량분수현저저우몽고력림화잡목림；3충차생림군락토양미생물생물량탄、담질량분수균여토양미생물호흡구유선성관계。
An experiment was conducted to study the seasonal variations of soil microbial biomass C and N, and its influence on soil microbial respiration in three major forest types ( Mongolian oak forest, broad-leaved mixed forest and Juglans mand-shurica forest) in the mountainous regions of eastern Liaoning Province.During the growing season, soil microbial biomass C and N in three forest types have obvious seasonal variation with a single peak curve shape, and reached the maximum in July or August.The seasonal variations of the contents of soil microbial biomass C and N in the secondary forest communi-ties were similar.Soil microbial biomass C and N contents in Mongolian oak forest were the highest and the lowest in Jug-lans mandshurica forest .The differences of soil microbial biomass C between three forests were not significant .Soil micro-bial biomass N content in Juglans mandshurica forest was significantly lower than that in Mongolian oak forest and mixed forest.Soil microbial biomass carbon, nitrogen and soil microbial respiration in three kinds of secondary forest community had linear relationship.