CAJ | 학술논문

细根的净生长与周转在城市绿地地下碳过程中具有至关重要的影响。本研究采用微根管法与土钻法相结合，对福建省福州市市区内城市绿地细根生长死亡及其净生产量的季节动态进行研究。结果表明：1）城市片林与城市草坪的细根生长死亡的季节动态明显，且季节动态模式相似。2）气温和降水因子对于城市片林和草坪的细根生长量及死亡量的影响不同。细根的死亡除了与气温、降水等因子有关之外，还与其他因子密切联系。3）城市片林与城市草坪的细根净生产量的季节动态有所不同，且片林的细根年净生产量大于草坪。4）城市片林和草坪的细根年净生产量小于天然森林和天然草原，这可能与人为管理措施的影响以及不同研究方法的偏差有关。
세근적정생장여주전재성시록지지하탄과정중구유지관중요적영향。본연구채용미근관법여토찬법상결합，대복건성복주시시구내성시록지세근생장사망급기정생산량적계절동태진행연구。결과표명：1）성시편림여성시초평적세근생장사망적계절동태명현，차계절동태모식상사。2）기온화강수인자대우성시편림화초평적세근생장량급사망량적영향불동。세근적사망제료여기온、강수등인자유관지외，환여기타인자밀절련계。3）성시편림여성시초평적세근정생산량적계절동태유소불동，차편림적세근년정생산량대우초평。4）성시편림화초평적세근년정생산량소우천연삼림화천연초원，저가능여인위관리조시적영향이급불동연구방법적편차유관。
The net growth and turnover of fine roots have crucial impacts on underground carbon process in urban green space .This study used soil core method and minirhizotron technique to investi-gate seasonal dynamic of fine root growth , fine root death as well as the net production of urban green space in Fuzhou.The results indicates: 1) There were obviously and similar seasonal dynamics in fine root growth and death in urban forests and lawns .2 ) Climatic factors ( air temperature and precip-itation) had different effect on the changes of growth and death of fine root in urban green space , be-sides, there were other factors related to death of fine root .3) Seasonal dynamics of the fine root net production in urban forests and urban lawn were different .The fine root net production in the urban forests was higher than that of urban lawns .4) The net productions of foot root in urban green space were lower than that in natural forests and grasslands , which may be due to the influences of human management and the deviation of different methods .