林业资源管理
林業資源管理
임업자원관리
FORESTRY RESOURCE MANAGEMENT
2014年
5期
64-68
,共5页
杜昕%岳永杰%李钢铁%李宽
杜昕%嶽永傑%李鋼鐵%李寬
두흔%악영걸%리강철%리관
大兴安岭%白桦%根茎比%根系生物量%生物量模型
大興安嶺%白樺%根莖比%根繫生物量%生物量模型
대흥안령%백화%근경비%근계생물량%생물량모형
the Greater Hinggan Mountains Region%birch%ratio of root and stem%root biomass%biomass model
以内蒙古大兴安岭根河林区白桦根系为研究对象,利用解析木法与全部挖掘法测定不同树龄白桦根系生物量,研究白桦根系生物量的分配规律,结果表明:白桦根茎比在(0.1449±0.0439)~(0.0930±0.0090)之间变动,且随树龄增大呈减小的趋势;各龄组白桦根系小根生物量占比均较少,占比为2%~5%、中根占比为16%~26%、大根与粗根占比合计为60%~80%,证明大根与粗根是根系生物量的主要贡献者;随树龄增大,大根生物量占比不断减小,而粗根生物量占比不断提高,这可能是根系平周生长的结果。基于20株解析木数据,建立了白桦根系生物量回归模型、白桦根系生物量累计生长模型、白桦根系生物量连年生长模型,各模型均具有较高精度,在内蒙古大兴安岭林区具有可用性。
以內矇古大興安嶺根河林區白樺根繫為研究對象,利用解析木法與全部挖掘法測定不同樹齡白樺根繫生物量,研究白樺根繫生物量的分配規律,結果錶明:白樺根莖比在(0.1449±0.0439)~(0.0930±0.0090)之間變動,且隨樹齡增大呈減小的趨勢;各齡組白樺根繫小根生物量佔比均較少,佔比為2%~5%、中根佔比為16%~26%、大根與粗根佔比閤計為60%~80%,證明大根與粗根是根繫生物量的主要貢獻者;隨樹齡增大,大根生物量佔比不斷減小,而粗根生物量佔比不斷提高,這可能是根繫平週生長的結果。基于20株解析木數據,建立瞭白樺根繫生物量迴歸模型、白樺根繫生物量纍計生長模型、白樺根繫生物量連年生長模型,各模型均具有較高精度,在內矇古大興安嶺林區具有可用性。
이내몽고대흥안령근하림구백화근계위연구대상,이용해석목법여전부알굴법측정불동수령백화근계생물량,연구백화근계생물량적분배규률,결과표명:백화근경비재(0.1449±0.0439)~(0.0930±0.0090)지간변동,차수수령증대정감소적추세;각령조백화근계소근생물량점비균교소,점비위2%~5%、중근점비위16%~26%、대근여조근점비합계위60%~80%,증명대근여조근시근계생물량적주요공헌자;수수령증대,대근생물량점비불단감소,이조근생물량점비불단제고,저가능시근계평주생장적결과。기우20주해석목수거,건립료백화근계생물량회귀모형、백화근계생물량루계생장모형、백화근계생물량련년생장모형,각모형균구유교고정도,재내몽고대흥안령림구구유가용성。
The root system of birch in the Genhe area of the Greater Hinggan Mountains region of Inner Mongolia was taken as the research object.The analytical method of wood and all mining method were used to measure different old birch root biomass to study the distribution features of white birch root bio-mass.The results show that ratio of root and stem of birch changes between 0.1449 ±0.0439 and 0.0930 ±0.0090,and has a tendency to decrease with increasing age.For each age group of birch root system small roots account for small proporation,about 2% to 5%,medium roots occupied 12% to 26%,large roots and coarse roots were main contribution part of the biomass,making up 60% to 80%.With the in-crease of tree age,the big root biomass proportion decreases continuously,and coarse root biomass propor-tion enhances unceasingly,this might be the result of roots system periclinal growth.Based on the data of 20 parse trees,birch root biomass regression model,birch root biomass accumulated growth model,birch root biomass current annual growth model was established,each model has a high precision,which can be used in the Greater Hinggan Mountains Region of Inner Mongolia.