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Key Issues on Development of Remote Sensing Application in Chinese Forestry

中国林业遥感发展中应该关注的几个问题


对中国林业遥感发展中当前急需解决的4个问题发表看法:1)应全面、准确地了解遥感技术在森林资源调查和管理中的作用。将遥感技术全面地融入现有规程,要扬长避短,并在各方面准确加以应用。不能仅在目视判读中提及,而在面积统计、精度要求、成果提供中均无反映。规程中不能写入遥感技术当前不适或不能解决的问题,如林种识别等。2)要用科学、实用的态度对待不断出现的高分辨率卫星数据。根据项目实际需要选择信息源,不能简单认为分辨率越高越好,要进行投入产出分析。3)为将我国林业遥感技术应用提高到一个新的水平,还需将其他有关学科的新理论、新技术不断引入林业工作的各个方面,如分形理论、大型数据库(Oracle)等,以推进中国林业现代化的进程。4)为使新技术在林业中广泛、迅速地被应用,做好示范、培训、宣传工作是非常必要的。

Four key issues on the development of remote sensing application in Chinese forestry are presented in this paper. The functions of remote sensing in forest resource inventory and management activities should be fully and comprehensively understood.Based on this understanding, remote sensing application should become a necessary part of various forestry regulations, and be applied widely. It was only mentioned in visual interpretation is not enough. The area statistic, accuracy evaluation and final outcome should be mentioned too. In addition, remote sensing is not a versatile tool, one should make best use of its advantages and avoid its disadvantages, some issues such as tree species recognition are not feasible to write in the regulations. The remote sensing data with high spatial resolution should be suitably applied, according to the current situations of China, especially the needs of the on-going programs. Otherwise, the costs will be unreasonably increased not only, the real needs can not be met but also.So to analyze input-output should be make. It is necessary to introduce new theories and technologies from other disciplinarians too, including fractal theory and huge database technology like Oracle etc. Having more training courses and making demonstration in suitable places is essential for promoting the application of remote sensing in Chinese forestry in the near future.


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