CAJ | 학술논문

对广东省丰顺县不同林龄桉树人工纯林开展研究,旨在阐明桉树林龄的变化对其固碳放氧量的影响.结果表明:桉树人工林平均树高、胸径和公顷蓄积随着林龄增长均有所增加.1~6 a桉树人工林的保存率由95%逐步降低至90%;桉树各器官生物量随着年龄增长均增加,但各器官生物量所占比例却有不同的变化趋势.1~6年生桉树各器官生物量按大小排序均为:树干>树根>树皮>树枝>树叶;随着林龄的增长,桉树吸收CO2量、放氧量以及碳储量均逐年增加,在前5 a碳储量平均增量为5.7 kg ,生长较快,第6 a碳储量仅增加1.9 kg ,增长速度出现变缓趋势.
대광동성봉순현불동림령안수인공순림개전연구,지재천명안수림령적변화대기고탄방양량적영향.결과표명:안수인공림평균수고、흉경화공경축적수착림령증장균유소증가.1~6 a안수인공림적보존솔유95%축보강저지90%;안수각기관생물량수착년령증장균증가,단각기관생물량소점비례각유불동적변화추세.1~6년생안수각기관생물량안대소배서균위:수간>수근>수피>수지>수협;수착림령적증장,안수흡수CO2량、방양량이급탄저량균축년증가,재전5 a탄저량평균증량위5.7 kg ,생장교쾌,제6 a탄저량부증가1.9 kg ,증장속도출현변완추세.
@@@@The study on eucalypt plantations of different ages in Fengshun county of Guangdong Province aimed to clarify how stand age affects eucalypt carbon fixation and oxygen release . The results showed that :average height , DBH and volume per hectare increased with stand age . Conservation of the eucalypt planta-tion aged 1 to 6 years decreases from 95% to 90% . Secondly , the biomass of Eucalyptus organs increased with stand age ,while various organs have different variable trends . The biomass of organs of Eucalyptus aged 1 to 6 years in descending order of magnitude was :stems , roots , barks , branches and leaves . The amount of carbon dioxide absorbed , oxygen released and carbon stored by Eucalyptus was also found to increase with age . The average increment of carbon storage in the first five years was 5 .7 kg , which showed a fast growth