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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Monitoring sustainability in tropical forests: how changes in canopy spatial pattern can indicate forest stands for biodiversity surveys
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Monitoring sustainability in tropical forests: how changes in canopy spatial pattern can indicate forest stands for biodiversity surveys

机译：监测热带森林的可持续性：林冠空间格局的变化如何指示森林生物多样性调查的立场

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摘要

Sustainable management of tropical forests has been identified as one of the main objectives for global conservation and management of carbon stocks. Toward this goal, managers need tools to determine whether current management practices are sustainable. Several international initiatives have been undertaken for the development of criteria and indicators to aid managers in moving toward sustainable practices. Despite these efforts, the question of how to apply and assess indicators remains to be answered from an operational, field-based perspective. Field surveys are expensive and time-consuming when management areas are large and in the face of logistical constraints. Thus, there is a need for an approach to prioritization. We sought to determine whether satellite imagery can be used, in conjunction with standard forest management data, to identify and rank priority areas for field surveys of bioindicators. The study area in Costa Rica, in forest areas managed by the Fundacion para el Desarrollo de la Cordillera Volcanica Central (FUNDECOR), was imaged by the Landsat-5 Thematic Mapper in 1986 and 2001. Through spatial statistical analysis applied to the wide dynamic range vegetation index, we were able to quantify and rank changes in canopy spatial structure. The resulting categories can be used by forest managers to identify which areas are in need of field surveys. More generally, we show how to generate a moving baseline for change analysis and evaluate for significant deviations in spatial structure.
机译：热带森林的可持续管理已被确定为全球保护和管理碳储存的主要目标之一。为了实现这一目标，管理人员需要工具来确定当前的管理实践是否可持续。为制定标准和指标已采取了一些国际举措，以帮助管理人员朝着可持续的方向发展。尽管做出了这些努力，但如何从实地的业务角度出发，如何应用和评估指标的问题仍有待解决。当管理区域很大且面对后勤限制时，实地调查既昂贵又费时。因此，需要一种优先级排序方法。我们试图确定是否可以将卫星图像与标准的森林管理数据一起用于识别和排序生物指示剂现场调查的优先区域。 1986年和2001年，Landsat-5专题制图仪对哥斯达黎加的研究区进行了研究，该研究区由中央火山基金会（FUNDECOR）管理的森林区域成像。通过空间统计分析，该研究区域可应用于较宽的动态范围植被指数，我们能够量化和排序冠层空间结构的变化。森林经理可以使用得出的类别来确定哪些领域需要进行实地调查。更笼统地说，我们展示了如何为变化分析生成移动基线并评估空间结构中的重大偏差。

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