杨树人工林林木蓄积量调查方法对比研究

Comparative study on investigation methods of volume in poplar plantation

采用全林每木检尺法、标准地调查法、样圆调查法、角规调查法对同一块杨树人工林林木蓄积量进行调查,比较了不同调查方法的调查精度与工作量大小。结果表明:四种调查方法调查所得林木蓄积量无明显差异。以全林每木检尺法调查的林木蓄积量为标准值,标准地调查法所测数据精度最高,其次为样圆调查法、角规调查法。从调查工作量上来看,全林每木检尺法工作量最大,样圆调查法与角规调查法操作容易,工作效率较高。

By using the methods of every tree measuring, standard plot investigation, circular sampling investigation, angle gauge investigation, the volume on the same piece of poplar plantation woodland were investigated, and the accuracy and workload of four methods were compared. The results showed that, there was no significant difference in volume among the four methods. With volume of every tree measuring method as the standard values, the measured data using standard plot method had the highest accuracy, secondly for circular sampling method and angle gauge method. On workload from investigation, the heaviest workload was every tree measuring method, while circular sampling method and angle gauge method were simple and efficient.