摘要
以防风固沙林生态系统的稳定性、科学性、防护性、可持续性为目标,以指标的代表性、科学性、系统性、独立性、实用性为原则,按照控制指标、评价指标和调查指标3层指标,从防风固沙林生态健康的稳定性、生态健康的持续性、生态健康的完备性3个方面,以防风固沙林的生长要素、结构要素、生境要素、树势要素、胁迫要素5项要素和18个调查指标构建防风固沙林生态健康指标评价体系。以防风固沙林生态学和固沙理论为基础,采用专家评议几何平均法计算划分指标的权重,结合宁夏毛乌素沙地的自然条件和防风固沙林具体情况,提出了一套综合评价防风固沙林生态系统健康指标体系及评价方法,并以宁夏毛乌素沙地防风固沙林为研究对象开展了实例研究。为宁夏毛乌素沙地防护林的健康持续发展提供了科学理论支撑,指导了该区域防风固沙林的抚育管理。
With the aim of pursuing stability, science, functionality and sustainability of eco-system of the sand fixation sheherbelt, and the principle of showing representation, science, systematization, independence and practice, an indicator appraisal system for ecological healthy sand fixation shelterbelt is introduced in the article according to 3 classified indicators （control, appraisal and investigation）, which is consisted of 5 elements （growth, structure, habitat, growth potential and risks） and 18 investigated indexes from the entering point of stability, sustainability and sound functionality. Meanwhile, with the help of mathematic method to define the indicator weight, considering natural condition of the Mu Us Sandland and actual situation of local sand fixation shelterbehs, the author presents a set of indicators and their appraisal ways for comprehensively assessing healthy eco-system of sand fixation shelterbelt based on theories of sand fixation shelterbelt ecology and sand fixation. Additionally, the author proposes theory support to healthy and sustainable development of shelterbelt in the Mu Us Sandland, and provides guidance to pruning management for sand fixation shelterbelt establishment in this region.
出处
《宁夏农林科技》
2012年第12期29-35,共7页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
防风固沙林
生态系统
森林健康
指标体系
Sand fixation shelterbelt
Ecological system
Forest health
Indicator system
