CAJ | 학술논문

对广东廉江石岭林场尾细桉等5种7.5年生桉树无性系的生物量和能量进行了研究.结果表明:不同无性系各组分生物量的分布规律均以干的最大、叶的最小,枝、根、皮介于中间;5种桉树无性系各组分的生物量排序为:赤桉、尾细桉、巨尾桉为干>根>枝>皮>叶,雷林1号桉为干>根>皮>枝>叶,尾叶桉为干>枝>根>皮>叶.人工林生物量现存量的排列顺序为尾细桉(161.60 t·hm~(-2))>巨尾桉(127.96 t·hm~(-2))>尾叶桉(112.60 t·hm~(-2))>赤桉(83.81 t·hm~(-2))>雷林1号桉(71.36 t·hm~(-2)).各组分的灰分含量各不相同,以叶最高(4.08%～6.88%),干最低(0.17%～0.43%).不同组分的干质量热值介于17.94～21,06 kJ·g~(-1)间,去灰分热值介于18.57～22.12 kJ·g~(-1)间,均以叶的值最高.植株体的平均干质量热值和去灰分热值分别为19.02～19.32、19.49～19.85 kJ·g~(-1),平均干质量热值的排序为雷林1号桉>尾叶桉>尾细桉>赤桉>巨尾桉,平均去灰分热值的排序为雷林1号桉>赤桉>尾叶桉>尾细桉>巨尾桉.5种桉树无性系林的能量现存量为1 360.73～3 067.47GJ·hm~(-2),大小顺序为尾细桉>巨尾桉>尾叶桉>赤桉>雷林1号桉.综合生物量和能量现存量分析,尾细桉选作能源树种最为理想,巨尾桉和尾叶桉次之,赤桉与雷林1号桉最差.
대엄동렴강석령림장미세안등5충7.5년생안수무성계적생물량화능량진행료연구.결과표명:불동무성계각조분생물량적분포규률균이간적최대、협적최소,지、근、피개우중간;5충안수무성계각조분적생물량배서위:적안、미세안、거미안위간>근>지>피>협,뢰림1호안위간>근>피>지>협,미협안위간>지>근>피>협.인공림생물량현존량적배렬순서위미세안(161.60 t·hm~(-2))>거미안(127.96 t·hm~(-2))>미협안(112.60 t·hm~(-2))>적안(83.81 t·hm~(-2))>뢰림1호안(71.36 t·hm~(-2)).각조분적회분함량각불상동,이협최고(4.08%～6.88%),간최저(0.17%～0.43%).불동조분적간질량열치개우17.94～21,06 kJ·g~(-1)간,거회분열치개우18.57～22.12 kJ·g~(-1)간,균이협적치최고.식주체적평균간질량열치화거회분열치분별위19.02～19.32、19.49～19.85 kJ·g~(-1),평균간질량열치적배서위뢰림1호안>미협안>미세안>적안>거미안,평균거회분열치적배서위뢰림1호안>적안>미협안>미세안>거미안.5충안수무성계림적능량현존량위1 360.73～3 067.47GJ·hm~(-2),대소순서위미세안>거미안>미협안>적안>뢰림1호안.종합생물량화능량현존량분석,미세안선작능원수충최위이상,거미안화미협안차지,적안여뢰림1호안최차.
Abstract:The biomass and energy of 7.5-year-old trees of Eucalyptus urophylla ×E.tereticornis and other four eucalypt clones,growing in Shiling Forest Farm of Lianjiang City in Guangdong Province were studied.The results showed that the biomass of various above and below ground components of trees were significantly different with stem-wood having the highest biomass and leaves the lowest;biomasses of branches,roots and bark were intermediate between that of stem-wood and leaves.The order of various components by decreasing biomass for the clones of E.camaldulensis,E.urophylla × E.tereticornis and E.grandis ×E.urophylla was stem-wood>roots >branches>bark>leaves.For the clone E.Leizhou No.1 the order was stem-wood>roots>bark>branches>leaves and for the clone of E.urophylla the order was stem-wood>branches>roots>bark>leaves.The clones by decreasing order of total retained biomass of plantation were:E.urophylla ×E.tereticornis(161.60 t·hm~(-2))> E.grandis ×E.urophylla(127.96 t·hm~(-2))> E.urophylla(112.60 t·hm~(-2))> E.camaldulensis(83.81 t·hm~(-2))>E.Leizhou No.1(71.36 t·hm~(-2)).Ash contents of leaves of different clones ranged from 4.08% to 6.88%,and were the highest of all components,whilst the ash contents of stem-wood of different clones ranged from 0.17% to 0.43% and were the lowest of all components.Gross caloric values(GCV)and ash free caloric values(AFCV)of different components ranged from 17.94 to 21.06 kJ·g~(-1) and 18.57 to 22.12 kJ·g~(-1) respectively.Of all the components,leaves had the highest GVCs and AFCVs.The average GVC and AFCV of the five clones ranged from 19.02 to 19.32 kJ·g~(-1) and 19.49 to 19.85 kJ·g~(-1) respectively.The order of five clones by decreasing GCV was E.Leizhou No.1>E.urophylla>E.urophylla×E.tereticornis>E.camaldulensis>E. Grandis× E.urophylla and by decreasing AFCV the order was E.leizhou No.1>E.camaldulensis>E.urophylla >E.urophylla×E.tereticornis>E.grandis× E.urophylla.The average energy values of five clone plantations ranged from 1 360.73 to 3 067.47 GJ·hm~(-2) with the decreasing order:E.urophylla×E.tereticornis >E.grandis ×E.urophylla>E.urophylla>E.camaldulensis>E.Leizhou No.1.According to biomass and energy,E.urophylla×E.tereticornis was the best clone for bioenergy,followed by both the E.grandis× E.urophylla and E.urophylla and the poorest were E.camaldulensis and E.Leizhou No.1.