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对森林效益进行科学的计量及评价,不仅可以为制定正确的环境政策提供重要依据,同时也将为科学地划分林种、多种目的地利用森林、拟定合理的森林经营措施开辟新的途径。至于计量及评价的成果在实践中能否真正发挥这样的作用,首先决定于计量及评价所依据的数据是否可靠和充分,同时还与是否正确理解和应用计量及评价的方法有密切的关系。正是在这两方面,《林业调查规划》1982年第一期刊载的《关于西双版纳傣族自治州森林涵养水源功能的计量和评价》一文存在不少值得商榷的地方。本文将仅从方法论的角度对其中的几个主要问题进行讨论。
Scientific measurement and evaluation of forest benefits can not only provide an important basis for formulating correct environmental policies, but also open up new avenues for scientifically demarcating forest types and using forests for various purposes and formulating sound forest management measures. Whether the metrological and evaluation achievements can really play such a role will depend primarily on the reliability and adequacy of the data on which the measurement and evaluation are based and on the correct understanding and application of the measurement and evaluation methods. It is on these two aspects that there are many debatable issues in the article “Measurement and Evaluation of Water Conservation Function of Forest in Xishuangbanna Dai Autonomous Prefecture” published in the first issue of “1982 Forestry Surveying and Planning”. This article will discuss just a few of the major issues from a methodological point of view.