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1、浙江林学院学报2008,25(2):206-210JournalofZhejiangForestryCollege千烟洲湿地松中幼林树冠生物量及生长量分析123涂洁,刘琪,简敏菲(11南昌工程学院水利系,江西南昌330029;21中国科学院地理科学与资源研究所,北京100101;31江西师范大学生命科学学院,江西南昌330022)摘要:运用枝条解析法对江西省千烟洲19年生湿地松Pinuselliottii枝条生物量及生长量进行估算,建立了树冠生物量3100612及生长量回归模型。结果如下:枝生物量(WB)与枝径(DB)间呈WB=010178DB的幂函数相关,r为018408。
2、分1154182枝断面积合计(ATB)与胸径(DBH)间呈ATB=118502DBH的幂函数相关,r为017509。树冠生物量(WC)与胸径间呈2159652WC=711059DBH的幂函数相关,r为019205。树冠生物量模型的参数估计及分组检验结果表明:方程的总相对误012554差在允许范围内,预估精度总体在90%左右。树冠生长量(y)与胸径生长量(x)间呈y=2913541x的幂函数相关,2r达019566。图3表1参23关键词:植物学;湿地松;树冠生物量;生长量;枝条解析中图分类号:S71814文献标志码:A文章编号:100025692(2008)0220206205
3、Crownbiomassandincrementinmid2young2agedPinuselliottiiplantationfromQianyanzhou123TUJie,LIUQi2jing,JIANMin2fei(11DepartmentofWaterConservancyofEngineering,NanchangInstituteofTechnology,Nanchang330029,Jiangxi,China;21InstituteofGeographicalScienceandNaturalResourcesResearch,ChineseAcademyofS
4、cience,Beijing100101,China;31CollegeofLifeScience,JiangxiNormalUniversity,Nanchang330022,Jiangxi,China)Abstract:Toincreasefutureforestresearchefficiencyandmanagement,amodelofbranchbiomassandgrowthincrementformid2young2agedPinuselliottiiwasdetermined.Estimatesweremadeusingthebranchanalysisme
5、thodwithregressionmodelsofcrownbiomassandincrement2established.Resultsshowedasignificantpower3100612correlationexistedbetweenbranchbiomass(WB)andbranchdiameter(DB)(WB=010178DB)withr=018408(P<0101).Correlationbetweenareaofthetotalbranchsection(ATB)anddiameteratbreast1154182height(DBH)waswell
6、fittedbyATB=118502DBHwithr=017509(P<0101).Asignificantpower2159652correlationalsoexistedbetweencrownbiomass(WC)andDBH(WC=711059DBH)withr=019205(P<0101).Parameterevaluationandgrouptestresultsshowedthatthecrownbiomassmodelcouldsatisfythepracticalrequirementswellwithapredictionexactnessofabout
7、90%andwiththetotalrelativestandarderrorwithinpermittedlimits.Correlationbetweencrownincrement(y)andDBHincrement(x)wasalsowell0125542fittedbyy=2913541xwithr=019566(P<0101).[Ch,3fig11tab123ref.]Keywords:botany;Pinuselliottii;crownbiomass;increment;branchan
