文献类型：期刊文献

中文题名：基于GIS的县域森林景观空间格局等级特征研究

英文题名：Spatial Characteristics of Forest Landscape in County Level Based on GIS

作者：孟超[1] 王计平[2] 支晓蓉[2] 胡艳萍[3] 张德成[3] 王蕾[4]

第一作者：孟超

通信作者：Wang, Jiping|[a000515bd552f7917d0cf]王计平;

机构：[1]河北农业大学林学院;[2]中国林业科学研究院国家林业局盐碱地研究中心;[3]中国林业科学研究院林业科技信息研究所;[4]北京林业大学林学院

年份：2018

卷号：49

期号：10

起止页码：187-194

中文期刊名：农业机械学报

外文期刊名：Transactions of the Chinese Society for Agricultural Machinery

收录：CSTPCD;;EI(收录号：20185206314766);Scopus(收录号：2-s2.0-85059084575);北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2017ZA007-3;CAFYBB2017MB038);林业软科学研究项目(2018-R5)

语种：中文

中文关键词：县域;景观格局;组织层次;等级特征;GIS;森林健康经营

外文关键词：county;landscape pattern;organizational level;hierarchical characteristics;geographic information system;forest health management

分类号：S757.2;S718.557

摘要：县域作为协调人类活动与自然资源关系的基本单元,是造林绿化和森林景观资源经营的重要空间。以河北省易县为例,以森林资源二类清查资料和土地利用资料为基础,基于GIS技术,通过景观等级类型划分、景观指数筛选和主成分分析法,对县域尺度森林景观空间格局及其等级特征进行了多层次研究。结果表明:林地景观占全域面积的58.4%,杨树、油松、柞树、山杏等林种和经济林是优势森林景观;景观分离度(SPLIT)、多样性指数(SHDI)和斑块密度(PD)等对组织层次变化响应强烈,随着组织层级细化,景观破碎化程度增大,斑块面积、数量等特征逐渐增强;在景观和类型水平,组织层级越高,森林景观蔓延和聚合趋势越明显,组织层次越细,各森林景观类型空间集聚、丛生化程度越明显,景观斑块边缘效应越突出。研究区森林景观与地形、土地利用类型等因素相互耦合,从山区到平原区,随着人类活动影响增强,森林景观破碎化、斑块形状复杂性及空间差异增大,因此森林景观资源健康管理应注重对景观多样性、空间分割程度、核心斑块面积和数量等关键指标的控制。
As a basic unit to coordinate the relationship between human activities and natural resources,county is an important area to carry out afforestation project and forest landscape resources management.The case study site was Yixian County of Hebei Province,which is well known for its landscape diversity,more forestation and high forest coverage.With the support of geographic information system(GIS)and principal component analysis(PCA),and based on the date of forest resources inventory and land use,the forest landscape patterns and its hierarchical characteristics were studied at county scale.The results showed that woodland landscape accounted for more than 58%of the total area,poplar,Pinus tabulaeformis,oak trees,apricot and other economic forest were the dominant forest landscape;splitting index(SPLIT),Shannon s diversity index(SHDI)and patch density(PD)exhibited a strong response to the changes in three levels of organizational hierarchy.With the refinement of the organization level,the degree of landscape fragmentation was increased,the area and quantity of the patch were increased gradually.The higher the organization level in the landscape level and patch type level was,the more obvious the trend of forest landscape contagion and cohesion was,in contrast,the more fine the organization level was,the more obvious the forest landscape aggregation and clumpiness was,and the more prominent the edge effect of the landscape patch was.Moreover,it proved that many factors affected forest landscape patterns and coupled with each other,such as terrain,land use type and living environment.From mountain to plain area,with the enhancement of the human activities and forest landscape,the forest landscape fragmentation,complexity of patch shape and its spatial difference were increased gradually.Therefore,the health management of forest landscape resources should be focused on the key indicators such as landscape diversity,spatial segmentation,core patch area and number,and so on.