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当前位置: 首页 > 文章 > 近30年四川小相岭山系植被景观变化分析 草业学报 2010,19 (4) 1-9
Position: Home > Articles > Analysis on the landscape changes of the Xiaoxiangling Mountains in Sichuan Province during approximately 30 years Acta Prataculturae Sinica 2010,19 (4) 1-9

近30年四川小相岭山系植被景观变化分析

作  者：
黄尤优;刘守江;王琼;马永红;田茂洁;胥晓
单  位：
西华师范大学生命科学学院;西华师范大学国土资源学院
关键词：
景观变化;景观格局;植被景观;景观指数;小相岭山系
摘  要：
选用小相岭山系1974,1994和2002年3个时期的遥感图像数据,在实地调查的基础上,结合"优化监督分类法"将研究区域分为常绿落叶阔叶混交林、次生落叶阔叶林、针阔叶混交林、针叶林、亚高山灌丛草甸、高山灌丛、高山草甸、高山流石滩植被和高山永久冰雪带9类,并利用3S技术与景观生态学的数量分析方法,分别从景观和类型水平上定量分析了大熊猫栖息地小相岭山系植被景观在近30a发生复杂相互转化的主要表现和动态变化特征,确定各植被类型具体的变化趋势与变化幅度。结果表明,1)近30a区域内植被景观多样性与均匀度降低、连通性增强,各植被类型不再均匀地散布在整体景观中,逐渐产生优势植被类型,破碎化程度有所缓解。2)针阔混交林是小相岭的基质类型,与针叶林不断增加,并且前20a增加了14.27%,增幅最大;亚高山灌丛草甸呈先增加后减少的变化趋势;高山灌丛则呈先减少后增加的变化趋势,并且前20a下降了11.05%,减幅最大;而高山草甸30a间景观基本保持不变。研究结果不仅可揭示该山系的景观分布结构和景观变化规律,而且也为当地植被生态环境的宏观保护提供参考依据。
译  名：
Analysis on the landscape changes of the Xiaoxiangling Mountains in Sichuan Province during approximately 30 years
作  者：
HUANG You-you1,LIU Shou-jiang2,WANG Qiong1,MA Yong-hong1,TIAN Mao-jie1,XU Xiao1 (1.College of Life Sciences,China West Normal University,Key Laboratory of Southwest China Wildlife Resources Conservation,Ministry of Education,Nanchong 637002,China;2.Land and Resources College,China West Normal University,Nanchong 637002,China)
关键词：
landscape changes;landscape pattern;vegetation landscape;landscape index;Xiaoxiangling Mountains
摘  要：
Based on remote sensing data of 1974,1994 and 2002,the landscape changes of giant panda habitat in the Xiaoxiangling Mountains was quantitatively analyzed by combining 3S technology with quantitative analysis of the landscape ecology in this paper,and the mutual-transformational phenomena and dynamically changed characteristics which took place in the landscape of the Mountains in approximately 30 years were summarized by comparative analysis.At last,the concretely variation trend,the changing amplitude were determined.To analyze the Mountains landscape pattern,we identified 9 vegetation types using "optimize supervised classification method",on field investigations,and a selected group of landscape metrics at the class and landscape level was used to quantify the changing pattern of vegetation landscape in the study region.All of the analyses were performed using a geographic information system and the landscape pattern analysis software Fragstats.The conclusions are as follows:1) The diversity and uniformity of the vegetation landscape has reduced,but connectivity has enhanced,and every vegetation type has no more deposited in the whole landscape and created ascendancy vegetation type gradually,the cracked extent of landscape has relieved in the district in nearly 30 years.2) Coniferous and broad-leaved mixed forest and coniferous forest have unceasingly increased.And coniferous and broad-leaved mixed forest was the background of the area,while it has had the biggest amplification in the first 20 years,increased 14.27%.Sub alpine shrub and sub alpine meadow have variation tendency that change from "increasing at first" to "decreasing at last",while alpine shrub with the contrary variation tendency,and has had the largest damping in the first 20 years,decreased 11.05%.But alpine shrub basically unchanged in approximately 30 years.The research results could not only reveal the distribution structure and change law of its landscape,but also provide referenced datum for macroscopically protection of local ecosystem environment.

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