CAJ | 학술논문

通过对长白山次生蒙古栎林细根生物量及动态的研究发现：4月末～9月末细根总生物量介于4.023 3～4.916 3 t/hm2,随时间逐渐增加;各月平均有67.2%的细根生物量集中于土壤表层0～10 cm,仅7月末0～10 cm土层细根生物量的比例（59.3%）偏低.细根表现为向深土层生长,不同土层内活细根所占比例的变化与活细根总生物量的季节变化规律基本相同,最低值出现在4月末;该群落细根年生长量为2.228 0 t/hm2,年死亡量为0.782 0 t/hm2,年分解量为0.119 0 t/hm2,年周转率为0.54次/a.
통과대장백산차생몽고력림세근생물량급동태적연구발현：4월말～9월말세근총생물량개우4.023 3～4.916 3 t/hm2,수시간축점증가;각월평균유67.2%적세근생물량집중우토양표층0～10 cm,부7월말0～10 cm토층세근생물량적비례（59.3%）편저.세근표현위향심토층생장,불동토층내활세근소점비례적변화여활세근총생물량적계절변화규률기본상동,최저치출현재4월말;해군락세근년생장량위2.228 0 t/hm2,년사망량위0.782 0 t/hm2,년분해량위0.119 0 t/hm2,년주전솔위0.54차/a.
Fine roots biomass and seasonal dynamics of secondary Mongolian oak forestry were studied in Changbai Mountain.The results showed that the fine roots biomass increased gradually with changing of season and its range was from 4.023 3 t/hm2 to 4.916 3 t/hm2 from late April to late September.The rate of fine roots biomass of different soil layers indicted that the monthly fine roots biomass in 0-10 cm was 67.2%,but it was lower(59.3%)in late July.The biomass was the lowest in late April,and the changing trend of the living fine roots biomass in different layers was the similar to the total living fine root biomass.The annual production of growth,mortality and decomposition were 2.228 0 t/hm2,0.782 0 t/hm2 and 0.119 0 t/hm2 respectively in the forest.And the annual fine root turnover rate was 0.54 times per year.