防护林科技
防護林科技
방호림과기
Protection Forest Science and Technology
2015年
11期
51-52
,共2页
尾巨桉%厚荚相思%细根%生物量
尾巨桉%厚莢相思%細根%生物量
미거안%후협상사%세근%생물량
Eucalyptus urophylla ×E .grandis%Acacia crassicarpa%fine root%biomass
通过对广西黄冕林场6年生尾巨桉和厚荚相思人工林细根的生物量含量进行研究,结果表明：尾巨桉和厚荚相思人工林细根在春、夏、秋、冬4个季节的生物量分别为0.576、0.765、0.624、0.391 t hm-2和0.416、1.482、1.256、0.288 t hm-2,年平均分别为0.589和0.861 t hm-2,两树种细根生物量的季节变化基本一致,均为夏季>秋季>春季>冬季,但厚荚相思的季节变化幅度明显大于尾巨桉。
通過對廣西黃冕林場6年生尾巨桉和厚莢相思人工林細根的生物量含量進行研究,結果錶明：尾巨桉和厚莢相思人工林細根在春、夏、鞦、鼕4箇季節的生物量分彆為0.576、0.765、0.624、0.391 t hm-2和0.416、1.482、1.256、0.288 t hm-2,年平均分彆為0.589和0.861 t hm-2,兩樹種細根生物量的季節變化基本一緻,均為夏季>鞦季>春季>鼕季,但厚莢相思的季節變化幅度明顯大于尾巨桉。
통과대엄서황면림장6년생미거안화후협상사인공림세근적생물량함량진행연구,결과표명：미거안화후협상사인공림세근재춘、하、추、동4개계절적생물량분별위0.576、0.765、0.624、0.391 t hm-2화0.416、1.482、1.256、0.288 t hm-2,년평균분별위0.589화0.861 t hm-2,량수충세근생물량적계절변화기본일치,균위하계>추계>춘계>동계,단후협상사적계절변화폭도명현대우미거안。
The biomass of the fine roots for six-year-old Eucalyptus urophylla ×E .Grandis and Acacia crassicarpa plantations in Guangxi State-Owned Huangmian Forest Farm were studied.Result shows that he biomass of the fine roots for Eucalyptus urophylla ×E .grandis and Acacia crassicarpa in spring,summer,autumn & winter is 0.576, 0.765,0.624,0.391 t hm- 2 and 0.41 6,1.482,1.256,0.288 t hm- 2 respectively;their annual biomasses of the fine roots are 0.589,0.861 t hm- 2 respectively.The seasonal variation of biomass of fine roots for the two species is unanimous,their descending order all are summer>autumn>spring>winter,but the variation of biomass for A-cacia crassicarpa at different seasons is more obvious than that of Eucalyptus urophylla ×E .grandis .
