抚远地区三种林型叶面积指数的估测
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摘要
利用半球摄影法(间接法)和凋落物法(直接法),测定了抚远地区蒙古栎林、山杨林和落叶阔叶林的叶面积指数(LAI),对半球摄影法参数?、?E进行了计算,并对该方法获得的叶面积指数值进行了校正。对比分析了不同季节半球摄影法和凋落物法测定的叶面积指数。结果表明:?值范围为4.2%~15.36%之间;山杨林的平均?E最高(0.75),其次是落叶阔叶林(0.72),蒙古栎林最低(0.71);样点?E的最大值出现在山杨林,最小值是蒙古栎林,3种林型?E的最大值和最小值都相差较大;3种林型DHP获得的有效叶面积指数(LAIe)整体趋势是相同的,最大值都出现在8月,获得的LAIe的平均值依次为:蒙古栎林(1.15)>落叶阔叶林(1.04)>山杨林(0.89);凋落物法获得的LAIt,蒙古栎林、山杨林、落叶阔叶林分别为3.67、4.28和3.17,最小值分别为0.33、0.68、0.20。
The leaf area index(LAI)of Quercus mongolica forest,Populus davidiana forest,and deciduous broadleavedforest in Fuyuan study area were measured with digital hemispherical photography(DHP)(indirect method) and litterfallmethod(direct method). The parameter of digital hemispherical photography ?、?E were calculated and the LAI valueobtained by this method was calibrated. The leaf area index value of different seasons obtained by digital hemisphericalphotography and litterfall method were compared. The results showed that ? value ranged between 4.2% and 15.36%;Theaverage ?E value of Populus davidiana forest was the highest(0.75),followed by the deciduous broadleaved forest(0.72),Quercus mongolica forest with the lowest value(0.71);Sample ?E maximum value appeared in Populus davidianaforest,while the minimum value was the Quercus mongolica forest;The maximum and minimum values of ?E in the threeforest types differred greatly. The overall trend of the effective leaf area index(LAIe) value obtained by the DHP method inthe three forest types was the same,with the maximum value appearing in August. The average value of LAIe obtained wereas follows:Quercus mongolica forest(1.15)> Deciduous broadleaved forest(1.04)> Populus davidiana forest(0.89);The true leaf area index(LAIt)obtained by litterfall method was 3.67,4.28 and 3.17 for Quercus mongolica forest,Populus davidiana forest,and deciduous broadleaved forest respectively,and the minimum value were 0.33,0.68 and 0.20 respectively.
The leaf area index(LAI)of Quercus mongolica forest,Populus davidiana forest,and deciduous broadleavedforest in Fuyuan study area were measured with digital hemispherical photography(DHP)(indirect method) and litterfallmethod(direct method). The parameter of digital hemispherical photography ?、?E were calculated and the LAI valueobtained by this method was calibrated. The leaf area index value of different seasons obtained by digital hemisphericalphotography and litterfall method were compared. The results showed that ? value ranged between 4.2% and 15.36%;Theaverage ?E value of Populus davidiana forest was the highest(0.75),followed by the deciduous broadleaved forest(0.72),Quercus mongolica forest with the lowest value(0.71);Sample ?E maximum value appeared in Populus davidianaforest,while the minimum value was the Quercus mongolica forest;The maximum and minimum values of ?E in the threeforest types differred greatly. The overall trend of the effective leaf area index(LAIe) value obtained by the DHP method inthe three forest types was the same,with the maximum value appearing in August. The average value of LAIe obtained wereas follows:Quercus mongolica forest(1.15)> Deciduous broadleaved forest(1.04)> Populus davidiana forest(0.89);The true leaf area index(LAIt)obtained by litterfall method was 3.67,4.28 and 3.17 for Quercus mongolica forest,Populus davidiana forest,and deciduous broadleaved forest respectively,and the minimum value were 0.33,0.68 and 0.20 respectively.
引文
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[15]马泽清,刘琪璟,曾慧卿,等.南方人工林叶面积指数的摄影测量[J].生态学报,2008,28(5):1971-1980.
[16]赵传燕,沈卫华,彭焕华.祁连山区青海云杉林冠层叶面积指数的反演方法[J].植物生态学报,2009,33(5):860-869.
[17]刘志理,金光泽.光学仪器法测定叶面积指数季节变化的误差分析[J].林业科学,2016,52(9):11-21.
[18]Mason E G,Diepstraten M,Pinjuv G L,et al.Comparison of direct and indirect leaf area index measurements of Pinus radiata D.Don[J].Agricultural andForest Meteorology,2012,166-167,113-119.
[19]Beaudet M,Messier C,Canham C D.Predictions of understorey light conditions in northern hardwood forests following parameterization,sensitivity analysis,and tests of the SORTIE light model.[J].Forest Ecology&Management,2002,165(13):235-248.
[20]Eriksson H,Eklundh L,Hall K,et al.Estimating LAIin deciduous forest stands[J].Agricultural and Forest Meteorology,2005,129,27-37.
[21]刘志理,金光泽.利用凋落物法和林木因子模拟小兴安岭阔叶红松林叶面积指数[J].生态学报,2015,35(10):3190-3198.
[2]Bréda N J J.Ground-based measurements of leaf area index:A review of methods instruments and current controversies[J].Journal of Experimental Botany,2003,54(392):2403-2417.
[3]Bequet R,Campioli M,Kint V,et al.Leaf area index development in temperate oak and beech forests is driven by stand characteristics and weather conditions[J].Trees,2011,25(5):935-946.
[4]刘志理,金光泽,周明.利用直接法和间接法测定针阔混交林叶面积指数的季节动态[J].植物生态学报,2014,38(8):843-856.
[5]Watson D J.Comparative physiological studies on the growth of field crops:I.Variation in net assimilation rate and leaf area between species and varieties,and within and between years[J].Annals of botany,1947,11(41):41-76.
[6]Bolstad P V,Gower S T.Estimation of leaf area index in fourteen southern Wisconsin forest stands using a portable radiometer[J].Tree Physiology,1990,7(1-2-3-4):115-124.
[7]任海,彭少麟.鼎湖山森林群落的几种叶面积指数测定方法的比较[J].生态学报,1997,17(2):220-223.
[8]王猛,李贵才,王军邦.典型草原通量塔通量贡献区地上生物量和叶面积指数的时空变异[J].应用生态学报,2011,22(3):637-643.
[9]Chen J M,Rich P M,Gower S T,et al.Leaf area index of boreal forests:theory,techniques,and measurements[J].Journal of Geophysical Research,1997,102(D24),29429-29443.
[10]向洪波,郭志华,赵占轻,等.不同空间尺度森林叶面积指数的估算方法[J].林业科学,2009,45(6):139-144.
[11]刘志理,金光泽.小兴安岭三种林型叶面积指数的估测[J].应用生态学报,2012,23(9):2437-2444.
[12]苏宏新,白帆,李广起.3类典型温带山地森林的叶面积指数的季节动态:多种监测方法比较[J].植物生态学报,2012,36(3):231-242.
[13]Sprintsin M,Cohen S,Maseyk K,et al.Long term and seasonal courses of leaf area index in a semi-arid forest plantation[J].Agricultural and Forest Meteorology,2011,151(5),565-574.
[14]刘志理,金光泽.小兴安岭白桦次生林叶面积指数的估测[J].生态学报,2013,33(8):2505-2513.
[15]马泽清,刘琪璟,曾慧卿,等.南方人工林叶面积指数的摄影测量[J].生态学报,2008,28(5):1971-1980.
[16]赵传燕,沈卫华,彭焕华.祁连山区青海云杉林冠层叶面积指数的反演方法[J].植物生态学报,2009,33(5):860-869.
[17]刘志理,金光泽.光学仪器法测定叶面积指数季节变化的误差分析[J].林业科学,2016,52(9):11-21.
[18]Mason E G,Diepstraten M,Pinjuv G L,et al.Comparison of direct and indirect leaf area index measurements of Pinus radiata D.Don[J].Agricultural andForest Meteorology,2012,166-167,113-119.
[19]Beaudet M,Messier C,Canham C D.Predictions of understorey light conditions in northern hardwood forests following parameterization,sensitivity analysis,and tests of the SORTIE light model.[J].Forest Ecology&Management,2002,165(13):235-248.
[20]Eriksson H,Eklundh L,Hall K,et al.Estimating LAIin deciduous forest stands[J].Agricultural and Forest Meteorology,2005,129,27-37.
[21]刘志理,金光泽.利用凋落物法和林木因子模拟小兴安岭阔叶红松林叶面积指数[J].生态学报,2015,35(10):3190-3198.