文峪河上游森林景观格局动态特征分析  

Dynamic Characteristics of Forest Landscape Pattern in the Upper Reaches of Wenyu River

作　　者：苏亚辉 周火艳 张芸香[1] 郭晋平[1] SU Yahui;ZHUO Huoyan;ZHANG Yunxiang;GUO Jinping(College of Forestry,Shanxi Agricultural University//Shanxi Key Laboratory of Cultivation & Development of Functional Oil Trees in the Northern China,Taigu,Shanxi 030801,China)

机构地区：[1]山西农业大学林学院//北方功能油料树种培育与研发山西省重点实验室,山西太谷030801

出　　处：《林业调查规划》2021年第3期126-132,共7页Forest Inventory and Planning

摘　　要：基于3期遥感影像,并结合实地调查数据,运用SVM机器学习的分类方法,从植被覆盖度、景观要素类型动态变化、景观格局指数等方面,综合分析文峪河上游近10年的森林景观格局动态变化特征。结果表明:研究区针叶林和针阔混交林面积之和均超过84%,是研究区域的主要景观要素类型;针阔混交林转为针叶林、疏林灌丛转为针阔混交林、针叶林转为针阔混交林、针阔混交林转为草地、草地转为针阔混交林是景观要素类型转移的5种主要方式;2009—2014年是森林资源快速生长恢复阶段,2014—2018年是森林资源稳定生长期;2009—2018年研究区景观总体呈现破碎度增加、景观异质性增强、斑块形状趋于复杂、景观连通度增加、流域景观多样性基本不变等特征。研究结果可为文峪河流域森林资源今后的保护利用以及经营措施提供重要参考。Based on three periods of remote sensing images and field survey data,this paper used SVM machine learning classification method to comprehensively analyze the dynamic change characteristics of forest landscape pattern in the upper reaches of Wenyu River in recent ten years from the aspects of vegetation coverage,dynamic changes of landscape element types and landscape pattern index.The results showed that the total area of coniferous forest and coniferous and broad-leaved mixed forest exceeded 84%,which were the main types of landscape elements in the study area;the conversions of coniferous and broad-leaved mixed forest to coniferous forest,sparse forest shrubs to coniferous and broad-leaved mixed forest,coniferous forests to coniferous and broad-leaved mixed forest,coniferous and broad-leaved mixed forest to grassland,and grassland to coniferous and broad-leaved mixed forest were the five main ways to transfer landscape elements;the period from 2009 to 2014 was the stage of rapid growth and recovery of forest resources,while the period from 2014 to 2018 was the stable growth stage of forest resources;the overall landscape of the study area from 2009 to 2018 showed the characteristics of increasing fragmentation,increasing landscape heterogeneity,more complex patch shapes,increasing landscape connectivity,and basically unchanged watershed landscape diversity.

关 键 词：森林景观格局 遥感影像 景观要素类型 动态变化 转移矩阵 文峪河上游 

分 类 号：S718.542[农业科学—林学]