森林多功能评价与表达方法

Methods of Evaluation and Expression of Multi-functions of Forests

以大边沟林场为例,采用多学科交叉融合的方法,对森林多功能评价与表达方法进行了研究。从森林多功能经营的需求与森林自身特点出发,提出了基于小班森林多功能经营要求的计量与评价方法,对14个小班的水土保持与水源涵养、减少温室气体、保护生物多样性和可持续木材生产等主要功能进行了评价。引入雷达图法,提出了多功能值和多功能指数的概念及其计算公式,用以表达小班整体功能,划分为优势齐备型、稳定平衡型、弱势缺失型等3个多功能类型。建立多种评价指标对小班多功能进行评价,用相对值比较法,即用"高、中、低"表达小班各种功能大小,并以此为基础,将各小班的多功能用雷达图方法全面表达,实现小班层次的多功能与整体功能评价与表达一体化。

A study was performed to evaluate and express the multi-functions of forests in Dabiangou Forest Farm of Qingyuan County,Liaoning Province by multidisciplinary integration.Methods of measurement and evaluation on forest compartments were put forward based on the needs of multifunctional forest management and characteristics of the forest itself.The functions of 14 forest compartments,such as soil and water conservation,greenhouse gas reduction,conservation of biological diversity,and sustainable wood production,were evaluated.The method of radar chart was applied to propose the concepts of multi-index and multi-values in order to express the overall function and classify the types of multifunctional forests.The study area was classified into three types as fully advantageous type,stable and balanced type,as well as weak and lacking type.Parameters for evaluating the multi-functions of each forest compartment were determined by using high,medium,and low categories to express the functional levels.Based on this,the multi-functions of forest compartment could be expressed by the method of radar chart to achieve full expression of overall functions.