利用3S 技术估算鹿门寺林场马尾松林生物量

为了估算鹿门寺林场马尾松林生物量，在利用GPS定位进行野外调查的基础上，设立样地，测定了鹿门寺林场的马尾松林的生物量。利用遥感解译软件Erdas imagine 8.5提取Landsat5 TM影像数据中的TM3、TM4、NDVI、RVI 反射光谱特征图像，并将GPS 采样点的数据经投影转换后使之与反射光谱特征图像匹配、叠置，在统一的几何基础上,进行采样点数据与TM 图像信息的复合比较研究，建立了森林生物量与反射光谱的关系模型。根据模型计算出鹿门寺林场2006年6月份马尾松林总生物量为69 947 t，每公顷生物量为36.27～136.74 t。西北林学院学报22卷第6期吴展波等利用3S 技术估算鹿门寺林场马尾松林生物量

Estimation of Pinus massoniana Biomass in Lumensi Forest Farm by 3S Technology

Based on field survey with GPS to fixed position,Pinus massoniana biomass in Lumensi forest farm were measured by setting up sample plots. Reflection spectrum characteristic images of TM3 ,TM4 ,NDVI and RVI of landsat5 TM data were translated by making use of the remote sense software Erdas Imagine (version 8.5) ,then the sample data were matched to these images after projection transformation. Comparison research between the sample data and TM image information on unified geometry basis was carried out. At last the relation model between the biomass of three kinds of terrestrial natural vegetation and spectrum reflecting was established. The results showed that the biomass of P. massoniana in Lumensi forest farm were 36.27～136.74 t·hm-2,and the total P. massoniana biomass amounts were 69 947 t in June 2006.