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当前位置: 首页 > 文章 > 基于灰色关联投影法的森林生态系统健康评价 西北农林科技大学学报(自然科学版) 2010,38 (8) 97-103
Position: Home > Articles > Health assessment of forest ecosystem based ongrey relation projection method Journal of Northwest A & F University(Natural Science Edition) 2010,38 (8) 97-103

基于灰色关联投影法的森林生态系统健康评价

作  者：
张晶晶;赵忠;宋西德;张永
单  位：
西北农林科技大学西部环境与生态教育部重点实验室
关键词：
灰色关联投影法;渭北黄土高原;人工刺槐林;健康评价
摘  要：
【目的】探寻一种简便易行、可操作性强的渭北黄土高原地区人工刺槐林健康评价方法,为渭北地区人工林的健康经营提供理论依据。【方法】基于灰色系统理论和矢量投影原理,建立森林生态系统健康评价灰色关联投影模型,并以永寿县槐平林场为例,利用21个刺槐林小班的调查数据,通过建立健康评价指标体系,采用灰色关联投影法,对该林场人工刺槐林的健康状况进行评价。【结果】建立的森林生态系统健康灰色关联投影模型将参评小班及各级指标视为矢量,分别向同一矢量(健康标准)进行投影,根据投影值的大小确定小班的健康级别,并对小班的健康状况进行排序。利用该评价模型对永寿槐平林场的评价表明,研究区健康的刺槐小班约占样本总数的38.10%,亚健康、不健康的刺槐小班分别占样本总数的19.05%和42.85%,表明该区域人工刺槐林整体上健康状态较差,评价结果与实际相符。【结论】建立的森林生态系统健康评价方法简便易行,能够比较客观地反映所调查森林的健康状况,具有一定的科学性和可操作性,对森林生态系统健康经营具有一定参考价值。
译  名：
Health assessment of forest ecosystem based ongrey relation projection method
作  者：
ZHANG Jing-jing,ZHAO Zhong,SONG Xi-de,ZHANG Yong(Key Laboratory of Environment and Ecology in Western China,Ministry of Education,Northwest A&F University,Yangling,Shaanxi 712100,China)
关键词：
grey relation projection method;Weibei Loess Plateau;planted forest;health assessment
摘  要：
【Objective】The study was done to seek a new method with the advantages of easy operation,good stability and high precision in order to testify health management of artificial forest in Weibei Loess Plateau.【Method】A grey relation projection model for ecosystem health assessment was established based on grey system theory and vector projection principle.According to the investigation data of 21 R.pseudoaciaforest in Yongshou,assessment index system of ecological health was established using grey relation projection method to assess the ecological health status.【Result】The established model took evaluated samples and classified standards as vectors,and projected on the same ideal sample.Then,evaluated samples were classified and arranged in the projective value.In Huaiping forest farm of Yongshou R.pseudoaciaforest in healthy condition accounts for 38.10%,the sub healthy forest 19.05%,the ill healthy forest subcompartments 42.85%,which shows that most of these forest subcompartments are in unhealthy condition.The assessment result is in correspondence with actual condition.【Conclusion】The assessing method established based on grey system theory can reflect the health status of the sample plots objectively and it offers a certain reference to the forest ecosystem health management.

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