基于GIS的东宁县高保护价值森林景观格局分析

以黑龙江省东宁县1:50000林相图和二类调查数据作为基础,根据<黑龙江省高保护价值森林判定标准>,对东宁县高保护价值森林进行了判定和区划;利用ArcGIS和Fragstats软件,从景观格局的总体特征、景观要素形状特征、景观的异质性和多样性3方面对东宁县高保护价值森林的景观格局进行了分析.结果表明:①东宁县高保护价值...

Landscape Patterns of High Conservation Value Forests in Dongning County,Heilongjiang Province

A study was conducted to identify and map high conservation value forests(HCVF) in Dongning County using the forest type map(1∶50 000) and Class II survey data of Dongning County as the basic information sources,according to the criterion of HCVF in Heilongjiang Province.The landscape patterns of HCVF in Dongning County were analyzed with ArcGIS and Fragstats in terms of overall landscape characteristics,landscape pattern index,landscape heterogeneity and diversity.Results showed that the total area of HCVF in Dongning County was 190 735 hm2,and HCVF exhibited biodiversity value,ecological service value as well as social and cultural values.HCVF in Dongning County were mainly natural forests,and oak forests and broad-leaved mixed forest accounted for 30.17 percent and 30.71 percent of the total area respectively.Patches with complicated shapes and high edge complexity were relatively concentrated.The index of the landscape diversity was 1.983 8,and the landscape heterogeneity was high.The oak forests and broad-leaved mixed forests were dominant landscape patterns.The HCVF in this area was heavily disturbed by human activities,and the landscape structure was unreasonable.Patch structures should be adjusted to meet the need of sustainable forest management.