Study On Growth Models Of Four Deciduous Broad-leaved Trees In Hefei

Platanus acerifolia, Sophora japonica, Sapindus mukorossi Gaertn and Koelrenteria integrifoliola Merr were not only widely used, but also had long history with luxuriant foliage, full of vitality. In order to follow the step of construction in Hefei, increasing of green quantity in short time plays crucial role. Take those trees as objects, forecasting their growth model were very meaningful.1.The DBH growth model of Platanus acerifolia on street's roadside was(Weibull): X₂=62.6977*(1-EXP(-((X₁+338.2662)/382.0186)^17.4109)). Height growth model was(Weibull): X₂=360.3342/(1+EXP(3.9455-0.017401X₁)). Crown width growth model was(Weibull): X₂=191.2952*(1-EXP(-((X₁+343.9426)/583.2232)^7.2290)).2.The DBH growth model of Platanus acerifolia in the parks and units was (Richards): X₂=60.0795/((1+1.6626*EXP(-0.077768*X₁))^(1/0.308899)). Height growth model was(Weibull): X₂=55.2708*(1-EXP(-((X₁-7.6670)/52.5386)^0.530103)). Crown width growth model was(Weibull): X₂=17.4365*(1-EXP(-((X₁+90.2931)/117.7319)^5.7594)). Under branch height model was(Richards): X₂=4.7611/((1+72.9332*EXP(-0.082722*X₁))^(1/3.1132)).3.The DBH growth model of Sophora japonica on street's roadside was(Weibull): X₂=41.5611*(1-EXP(-((X₁-0.263848)/23.7872)^0.701437)). Height growth model was(Richards): X₂=0.000550/((1+4.2086*EXP(0.008723*X₁))^(1/-0.182570)). Crown width growth model was(Richards): X₂=1.1265/((1-0.995723*EXP(0.000164*X₁))^(1/4.0114)). Under branch height model was(second-degree curve): X₂=0.957736+0.214655*X1-0.005494*X₁*X₁.4.The DBH growth model of Sophora japonica in the parks and units was (Weibull): X₂=45.9999/((1+2.0658*EXP(-0.108270*X₁))^(1/0.336217)). Height growth model was(Weibull): X₂=84.7762*(1-EXP(-((X₁-8.1693)/878.6856)^0.48490. Crown width growth model was(Richards): X₂=31943.9244/((1+44387.5498*EXP(-0.045729*X₁))^(1/1.2030)). Under branch height model was(Richards): X₂=3.3327/((1+472902.0570*EXP(-0.329221*X₁))^(1/11.1146))5.The DBH growth model of Sapindus mukorossi Gaertn in the parks and units was(Weibull): X₂=73.7959*(1-EXP(-((X₁-0.764989)/111.7601)^0.735701)). Height growth model was(Weibull): X₂=138.1834*(1-EXP(-((X₁+0.520845)/273.2348)^0.871592)).Crown width growth model was(Weibull): X₂=150.1045*(1-EXP(-((X₁-8.4191)/1814.5397)^0.528083)). Under branch height model was(Weibull): X₂=58.1658*(1-EXP(- ((X₁-2.5307)/334.5600)^0.943273)).6.The DBH growth model of Koelrenteria integrifoliola Merr in the parks and units was(Weibull): X₂=1238.1163*(1-EXP(-((X₁-0.492522)/17412.5536)^0.635666)). Height growth model was(second-degree curve) X₂=21.0416-1.4113*X₁+0.052730*X₁*XCrown width growth model was(Weibull): X₂=23.2776*(1-EXP(-((X₁+5.3226)/42.4256)^1.8526)). Under branch height model was(Weibull):X₂=29.5451*(1-EXP(-((X₁-8.0424)/119.5056)^0.859615))Comply with Form window complicated by Visual Studio, 2008 C#.NET, realized the visualization of Platanus acerifolia in the parks and units. It can reflect the dynamic growth of Platanus acerifolia more directly, implying scientific basic data for landscape designer. The discussion of visualization will provide the foundation for further study of landscape emulation technique in Hefei.