【摘要】 利用遥感技术和多元回归方法,分析了东北平原杨树人工林的立地因子与TM(thematic mapper)影像的关系,建立杨树林生长与植被因子和土壤因子的关系,拟合立地因子——林木生长模型。结果表明:在吉林省农安县南部的防护林类型中,以可溶性总盐(X1)和pH值(X2)为影响林木高(H)生长的主导因子,回归方程为:H=8.431-119.699X1+1.617X2(P<0.01);在吉林省农安县北部防护林类型中,以有机质含量(X1)和0.01～0.25mm粒级含量(X2)为影响林木高(H)生长的主导因子,回归方程为:H=16.421+2.616X1-0.089X2(P<0.01)。回归关系达到了显著水平,根据立地因子,可以预测东北平原农田防护林中的双杨快杨(Populus×xiaozhuanica)和北京杨(Populus×beijingensis)的林木生长状况。更多还原

【Abstract】 In this paper,based on remote sensing technique and multi-regression method,the relationship between site factors of Populus spp.plantation and TM image information in Northeast plain was analyzed,and then the relationship among tree growth,vegetative factors,and soil factors were established,and the site factors-tree growth model also can be matched.The results showed that in protective forest in southern area of Jilin Province Nong’an County,the soluble salt content(X1) and pH value(X2) were dominant factors influencing height growth(H) of trees,and the regression equation was: H=8.431-119.699X1+1.617X2(P<0.01).In protective forest in northern area of Jilin Province Nong’an County,the organic matter content(X1) and 0.01mm-0.25mm diameter content(X2) were dominant factors influencing height growth(H) of trees,and the regression equation was: H= 16.421+2.616X1-0.089X2(P<0.01).The regression relationships reach significant level,so we could forecast growth situation of Pop-ulus×xiaozhuanica and Populus×beijingensis in farmland protective forest in Northeast plain based on the site factors.更多还原