东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2014年
1期
42-46,75
,共6页
森林景观类型%环境因子%典范对应分析%尺度效应%西洞庭湖区
森林景觀類型%環境因子%典範對應分析%呎度效應%西洞庭湖區
삼림경관류형%배경인자%전범대응분석%척도효응%서동정호구
Forest landscape types%Environmental factors%Canonical correspondence analysis%Scale effect%West Dongting Lake area
在ArcGIS平台支持下，提取西洞庭湖区15种森林景观类型和最具代表性的5个环境因子（海拔、坡度、坡位、坡向、土层厚度）数据库为数据源，引入典范对应分析法，对西洞庭湖区森林景观格局与环境的关系及其尺度效应进行了定量研究。结果表明：随尺度变化，各环境因子与排序轴的相关系数大小呈波动趋势，海拔相关性突出；结合CCA排序图，从排序轴特征值、影响程度和差异性看，森林景观格局与环境的关系都随尺度变化呈现出明显的尺度效应，取样尺度为S4时确定为最佳取样尺度。
在ArcGIS平檯支持下，提取西洞庭湖區15種森林景觀類型和最具代錶性的5箇環境因子（海拔、坡度、坡位、坡嚮、土層厚度）數據庫為數據源，引入典範對應分析法，對西洞庭湖區森林景觀格跼與環境的關繫及其呎度效應進行瞭定量研究。結果錶明：隨呎度變化，各環境因子與排序軸的相關繫數大小呈波動趨勢，海拔相關性突齣；結閤CCA排序圖，從排序軸特徵值、影響程度和差異性看，森林景觀格跼與環境的關繫都隨呎度變化呈現齣明顯的呎度效應，取樣呎度為S4時確定為最佳取樣呎度。
재ArcGIS평태지지하，제취서동정호구15충삼림경관류형화최구대표성적5개배경인자（해발、파도、파위、파향、토층후도）수거고위수거원，인입전범대응분석법，대서동정호구삼림경관격국여배경적관계급기척도효응진행료정량연구。결과표명：수척도변화，각배경인자여배서축적상관계수대소정파동추세，해발상관성돌출；결합CCA배서도，종배서축특정치、영향정도화차이성간，삼림경관격국여배경적관계도수척도변화정현출명현적척도효응，취양척도위S4시학정위최가취양척도。
By ArcGIS and canonical correspondence analysis (CCA), with database data of 15 forest landscape types and five environmental factors (altitude, slope degree, slope position, slope aspect and soil thickness) in west Dongting Lake area, the investigation was conducted to quantitatively study the relationship and the scale effect of forest landscape pattern and environment .With the scale variation , the correlation coefficient between each environmental factor and ordination axes presents a fluctuating trend, altitude correlation is particularly significant.Combining with the CCA ordination plot, the re-lationship of forest landscape pattern and environment shows obvious scale effect in the aspect of ordination axes eigenval-ue, forest landscape types or the difference, and thenS 4 sampling scale is determined as the best sampling scale.
