关于在新西兰种植园林业部门使用地理空间技术的最新调查

IF 1.5 4区 农林科学 Q2 FORESTRY
Sarah de Gouw, J. Morgenroth, Cong Xu
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引用次数: 4

摘要

背景:近几十年来,地理空间技术发展迅速,可以提供详细、准确的数据来支持森林管理。新西兰人工林管理部门对地理空间技术的采用以及采用的障碍的了解是有限的,这将有利于该行业。这项研究是对2013年Morgenroth和Visser的基准研究的更新。方法:对新西兰拥有或经营人工林的29家公司进行在线调查。调查分为七个部分,由多项选择和开放式问题组成,主题包括:人口统计信息、数据门户和数据集、全球导航卫星系统(GNSS)接收器和四种遥感技术。这些包括航空成像、多光谱成像、高光谱成像以及光探测和测距(激光雷达)。每一节的问题涉及每一种遥感技术的获取、应用和创造的产品。还包括与阻碍采用技术的障碍有关的问题。为了确定这些技术的应用进展,研究人员将研究结果与摩根罗斯和维瑟五年前的研究结果进行了比较。结果:23家公司对调查做出了回应,这些公司总共管理了大约117.2万公顷(占新西兰170.6万公顷人工林地产的69% (NZFOA, 2018))。个别公司管理的地产面积从1,000公顷到17.7万公顷不等(四分位数1 = 19,000公顷,中位数= 33,000公顷,四分位数3 = 63,150公顷)。所有公司都使用GNSS接收器,并获得红绿蓝三波段航空图像。分别有48%、9%和70%的公司获得了多光谱图像、高光谱图像和激光雷达数据。这些技术衍生的产品的常见应用是森林制图和描述、采伐规划和割接制图。尽管成本是激光雷达获取的主要障碍,但阻碍公司获取大多数遥感数据的主要障碍是缺乏员工知识和培训。自2013年以来,所有遥感技术的采用都有所增加。激光雷达的使用率进步最大,从17%增加到70%。公司获取数据的方式也发生了变化。2018年,许多公司使用无人驾驶飞行器(UAV)获取航空和多光谱图像,而2013年没有公司使用无人机。ESRI ArcGIS仍然是新西兰森林管理公司使用的主要地理信息系统(91%),尽管22%的公司现在使用免费的GIS软件,如QGIS或GRASS。自2013年以来,用于激光雷达或摄影测量点云分析的专业软件(如FUSION、LAStools)的使用有所增加,但大多数将。las文件处理成各种产品(如数字地形模型)的林业公司都在使用ArcGIS。结论:本研究表明,新西兰人工林管理部门在采用地理空间技术方面取得了进展。然而,仍然存在阻碍充分利用这些技术的障碍。研究结果表明,该行业可以从投资更多与地理空间技术相关的培训中受益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An updated survey on the use of geospatial technologies in New Zealand’s plantation forestry sector
Background: Geospatial technologies have developed rapidly in recent decades and can provide detailed, accurate data to support forest management. Knowledge of the uptake of geospatial technologies, as well as barriers to adoption, in New Zealand’s plantation forest management sector is limited and would be beneficial to the industry. This study provides an update to the 2013 benchmark study by Morgenroth and Visser. Methods: An online survey was sent to 29 companies that own or manage plantation forests in New Zealand. The survey was split into seven sections, composed of multiple-choice and open-ended questions, on the topics of: demographic information, data portals and datasets, global navigation satellite system (GNSS) receivers, and four remote-sensing technologies. These included aerial imagery, multispectral imagery, hyperspectral imagery, and light detection and ranging (LiDAR). Each section included questions relating to the acquisition, application and products created from each remote-sensing technology. Questions were also included that related to the barriers preventing the uptake of technologies. To determine the progression in the uptake of these technologies the results were compared to Morgenroth and Visser's study conducted five years' earlier. Results: Twenty-three companies responded to the survey and together, those companies managed approximately 1,172,000 ha (or 69% of New Zealand’s 1.706 million ha plantation forest estate (NZFOA, 2018)). The size of the estates managed by individual companies ranged from 1,000 ha to 177,000 ha (quartile 1 = 19,000 ha, median = 33,000 ha, quartile 3 = 63,150 ha). All companies used GNSS receivers and acquired three-band, Red-Green-Blue, aerial imagery. Multispectral imagery, hyperspectral imagery and LiDAR data were acquired by 48%, 9% and 70% of companies, respectively. Common applications for the products derived from these technologies were forest mapping and description, harvest planning, and cutover mapping. The main barrier preventing companies from acquiring most remotely-sensed data was the lack of staff knowledge and training, though cost was the main barrier to LiDAR acquisition. The uptake of all remote-sensing technologies has increased since 2013. LiDAR had the largest progression in uptake, increasing from 17% to 70%.  There has also been a change in the way companies acquired the data. Many of the companies used unpiloted aerial vehicles (UAV) to acquire aerial and multispectral imagery in 2018, while in 2013 no companies were using UAVs. ESRI ArcGIS continues to be the dominant geographic information system used by New Zealand’s forest management companies (91%), though 22% of companies now use free GIS software, like QGIS or GRASS. The use of specialised software (e.g. FUSION, LAStools) for LiDAR or photogrammetric point cloud analysis increased since 2013, but most forestry companies who are processing .las files into various products (e.g. digital terrain model) are using ArcGIS. Conclusions: This study showed that there had been a progression in the uptake of geospatial technologies in the New Zealand plantation forest management sector. However, there are still barriers preventing the full utilisation of these technologies. The results suggest that the industry could benefit from investing in more training relating to geospatial technologies.
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来源期刊
CiteScore
2.20
自引率
13.30%
发文量
20
审稿时长
39 weeks
期刊介绍: The New Zealand Journal of Forestry Science is an international journal covering the breadth of forestry science. Planted forests are a particular focus but manuscripts on a wide range of forestry topics will also be considered. The journal''s scope covers forestry species, which are those capable of reaching at least five metres in height at maturity in the place they are located, but not grown or managed primarily for fruit or nut production.
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