CAJ | 학술논문

采用根钻取样法对陕西榆林樟子松细根分布特征进行研究。结果表明：樟子松细根根质量密度随着距树干基部距离的增大而减小，细根集中分布在0～150 cm内，超过细根总生物量的50％。细根生物量在南北东西方向上都有差异，南方最少，北方最多，东西相差不大。在垂直方向上，细根根质量密度在0～10 cm的土层中很小，10～120 cm的土层中随着土壤深度的增加而减小，在10～40 cm的土层中细根生物量超过总细根生物量45％。土壤含水率随着土壤深度的增加先增大后减小，在10～70 cm的土层中与细根根质量密度的变化趋势相反。
채용근찬취양법대협서유림장자송세근분포특정진행연구。결과표명：장자송세근근질량밀도수착거수간기부거리적증대이감소，세근집중분포재0～150 cm내，초과세근총생물량적50％。세근생물량재남북동서방향상도유차이，남방최소，북방최다，동서상차불대。재수직방향상，세근근질량밀도재0～10 cm적토층중흔소，10～120 cm적토층중수착토양심도적증가이감소，재10～40 cm적토층중세근생물량초과총세근생물량45％。토양함수솔수착토양심도적증가선증대후감소，재10～70 cm적토층중여세근근질량밀도적변화추세상반。
By the drilling sampling , we studied the distribution of Pinus sylvestris var.mongolica fine roots in Ynlin City , Shaanxi Province .Pinus sylvse tris var.mongolica fine roots weight density decreased with the increasing distance from the base of the trunk , fine roots were mainly concentrated in the range of 0-150 cm, and exceeded 50%of the total fine root biomass.The distribution of fine root biomass were not even under four directions , least at the south, most at the north, and there was no much difference between east and west .In the vertical direction ,the fine roots weight density was less in 0-10 cm of the soil layer , decreased with the depth increasing under the 10-120 cm of the soil layer , and the fine root bio-mass exceeded 45%of the total amount in the 10-40 cm of the soil layer .The trend of soil moisture first increased and then decreased with the soil depth increasing , which showed the opposite trend in the 10-70 cm of the soil layer .