关于模型更新监测森林资源动态变化的研究

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根据第三次(1984—1988年)全国森林资源清查结果,反映我国森林资源仍为消耗量大于生长量、森林蓄积持续减少、质量下降、可供采伐的用材林成过熟林大幅度减少、资源危机的局面十分严峻的形势,部领导提出要在全国建立森林资源监测体系,要求每年提供一次全国和各省(自治区、直辖市)森林资源监测成果,每五年提供一次全国和各省(自治区、直辖市)森林资源连续清查成果与森林资源发展趋势的预测。为摸索一套适合我国国情的监测办法,经有关专家、教授及广大林业调查规划设计人员共同研究,提出了以森林资源连续清查成果为基础数据,结合收集当年与资源消长有关信息,采用数学模拟办法,监测全国和各省(自治区、直辖市)森林资源。1989年在吉林等四省进行试生产监取得成功,今年在全国范围开展工作。由于这是一项新的工作,有些人对这种方法不太了解或有异议,提出一些问题和看法,为此我们请资源和林政管理司的同志对这项工作进行了探讨并回答大家关心的主要问题。这项工作刚起步,使用的数据模型程序还需在实践中不断完善与优化,信息点调查还要不断总结,欢迎大家共同探讨並提出收进建议。 According to the results of the third national forest inventory (1984-1988), it shows that the forest resources in our country still consume more than the amount of growth, the forest reserves continue to decrease, the quality is declining, and the timber forests available for harvesting have significantly reduced over-mature forests. Resources The situation of the crisis is very grim. The ministry leaders proposed to set up a monitoring system for forest resources throughout the country and requested that the results of forest resources monitoring in the whole country and in all provinces (autonomous regions and municipalities directly under the Central Government) be provided once every year. The national and provincial (autonomous regions and municipalities) The Result of Continuous Inventory of Forest Resources and the Prediction of the Development Trend of Forest Resources. In order to explore a set of monitoring methods suitable for China’s national conditions, the experts, professors and the majority of forestry survey planning and design personnel to jointly study, made a continuous inventory of forest resources based on the results of data collection, combined with resource consumption and growth of the year, the use of mathematical simulation Measures to monitor the forest resources of the whole country and provinces (autonomous regions and municipalities directly under the Central Government). In 1989, trial production was conducted in the four provinces of Jilin Province successfully. This year, work was carried out throughout the country. Since this is a new job, some people do not understand or disagree with this method and ask some questions and opinions. Therefore, we ask the comrades of the Division of Forestry and Forestry Affairs to discuss this issue and answer everyone’s concern The main problem. This work has just started, the data model used in the program need to continue to improve and optimize in practice, the information point survey should continue to summarize, and we welcome everyone to discuss and put forward suggestions for income.
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