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林业资源管理 ›› 2019, Vol. 0 ›› Issue (4): 117-123.doi: 10.13466/j.cnki.lyzygl.2019.04.017

• 技术应用 • 上一篇    下一篇

GNSS RTK 技术在林木定位及微地形测量中的应用

石君杰1(), 陈忠震1, 孟令宇1, 李永祥2, 李永宁1()   

  1. 1.河北农业大学 林学院 河北省林木种质资源与森林保护重点实验室,河北 保定 071000
    2.河北省木兰围场国有林场管理局,河北 围场 068450
  • 收稿日期:2019-02-28 修回日期:2019-04-12 出版日期:2019-08-28 发布日期:2020-10-20
  • 通讯作者: 李永宁
  • 作者简介:石君杰(1991-),男,河南林州人,在读硕士,主要从事3S技术应用方面研究工作。Email: sjj410521@163.com
  • 基金资助:
    国家重点研发计划项目(2016YFD060020303)

Applications of GNSS RTK Technology to Positioning Forest Location and Measuring Microtopography

SHI Junjie1(), CHEN Zhongzhen1, MENG Lingyu1, LI Yongxiang2, LI Yongning1()   

  1. 1. College of Forestry,Agricultural University of Hebei/Hebei Province Key Laboratory of Forest Trees Germplasm Resources and Forest Protection, Baoding 071000, China
    2. Mulanweichang National Forest Farm Management Bureau of Hebei Province, Weichang 068450, China
  • Received:2019-02-28 Revised:2019-04-12 Online:2019-08-28 Published:2020-10-20
  • Contact: LI Yongning

摘要:

GNSS RTK能提供实时、高精度的定位信息,在林区有广阔的应用前景。研究尝试在几种不同林分类型中进行RTK定位,选取位于龙头山林场的华北落叶松天然林进行了林木分布格局调查和微地形测量。研究结果表明:1)郁闭度是影响RTK在森林中定位可用性的主要因素之一,当郁闭度在0.6以下时,能应用GNSS RTK在森林中进行定位;2)使用RTK进行样地设置时有“直接放样法”和“辅助定位法”,可以灵活选择;3)与全站仪相比,RTK每木定位的平均点位误差为0.143m,可以满足每木定位的需要;4)使用ArcGis分析RTK采集的定位数据可以在每木定位的同时获得样地内坡度、坡向等微地形信息。

关键词: 华北落叶松, 每木定位, 微地形, RTK测量, 可视性分析

Abstract:

GNSS RTK can provide real-time,high-precision positioning information and has broad application prospects in forests.We tried to measure the position of the tree using RTK in several different forest types.In addition,the tree distribution pattern and microtopography were measured on the natural forest of Larix principis-rupprechtii in Longtoushan Forest Farm.Results showed that:1) Crown density is one of the main factors affecting the availability of RTK in forests.The lower the canopy closure,the higher availability of RTK.2) Accuracy and efficiency can be improved by RTK for plot setting.There are two ways to choose,one is “straight measurement lofting”,the other is “auxiliary measurement”.3) Compared with the electronic total station,the average point error of RTK is 0.143m,which fully meets the needs of the work.4) Using ArcGis to analyze the data measured by RTK,microtopography information such as slope and aspect can be obtained.

Key words: Larix principis-rupprechtii, positioning of trees, microtopography, RTK surveying, visibility analysis

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