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OALib Journal期刊
ISSN: 2333-9721
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森林盗伐的数字摄影测量方法及应用
DOI: 10.3969/j.issn.1000-2006.2015.05.014, PP. 87-92
Keywords: 森林调查,盗伐林木,摄影测量,地径,胸径,材积
Abstract:
为了解决盗伐林木材积测定困难的问题,以普通数码相机或3d数码相机为信息采集手段,采用现代近景摄影测量技术,通过计算机相关程序进行图像处理,提取立木测树因子数据信息,编写地径-胸径拟合程序,利用已有的地方各树种的一元材积数学模型库进行立木胸径、材积的预测,并以北京地区25株速生杨的地径、胸径、材积的摄影测量值与外业实测值为例对模型进行验证。结果表明:北京市速生杨一元材积模型为v=0.000065678d1.31.94106[22.126×(1-e-0.07204d1.3)1.3738]0.84929,利用数字摄影测量方法进行盗伐林木材积的计算,所获取的立木地径、胸径、材积参数与实际外业测量参数平均误差分别为1.94%、3.49%、6.82%,以该方法能够获取较为准确的地径、胸径和材积数据。
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