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付纪建 《内蒙古林业调查设计》2011,34(3):62-65
文章根据森林立地分类原则及多伦县地形地势、土壤和植被差异,采用立地类型小区立地类型组———立地类型三级分类,共划出4个立地类型小区、8个立地类型组和26个立地类型,旨在满足多伦县森林资源规划设计调查和经营方案编制的需要。 相似文献
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本文对辽宁省刺槐人工林立地类型进行了划分。依据刺槐的生物学及生态学特性,分级序将辽宁省刺槐人工林立地共划分为2个立地区域,5个立地区,5个立地亚区,5个立地类型小区,15个立地类型组,38个立地类型,并预估了各主要立地类型的生产潜力。 相似文献
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文章对鄂温克族自治旗森林立地进行了分类,共划出4个立地类型小区、6个立地类型组和15个立地类型。 相似文献
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文章在分析广灵县自然地理条件基础上,根据立地类型小区、立地类型组和立地类型的划分原则,将广灵县划分为2个立地类型小区,13个立地类型组和25立地类型。 相似文献
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浙江省沿海立地区立地分类的研究 总被引:1,自引:0,他引:1
阐述了浙江省沿海立地区立地分类系统的构成和分类依据,并将我省“沿海立地区”划分成4个立地类型区、7个立地类型组和26个立地类型。 相似文献
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StudysiteThestudysiteislocatedintheeasternslopeofDaxing'anMountains(47"25'~49'37'N,119'37'-122"45'E),whichbelongstotheBalinForestryBu-reauofNeiMenggol.ThemaintopographyislowermountainsandhilIs.Thealtitudeis4oo~1ooom.Theannualaccumulativetemperature(>=1oC)isabout1845oC.AnnuaIprecipitationis42omm.Annualaveragetemperatureis-15t.Thefrost-freeperiodis97d.lnthisarea,thezonalsoilisbrownconiferousforestsoil,theothertypeofsoilismeadowsoilandbogsoiI.ThemainfundamentaIrockisgrinite.ThebasaItisse… 相似文献
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Based on the plot data from the investigation and the theory of forest ecology and ecological system, the site classification
of the eastern forest region of Daxing’an Mountains was made by mean of mathematical method. The main factors were slope,
thickness of soil layer, slope position and slope aspect. Grades of slope were used as the division standard for site type
group. The slope aspect, slope position and thickness of soil layer were used as the division standards for site type. Altogether
7 site type groups and 15 main site types were determined the region. It provided reliable fundamental basis for the reasonable
management and planting design in the area.
Responsible editor: Zhu Hong 相似文献
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利用我国湿地松分布区内222个气象站点的10a气候资料的平均值,用主成分分析法,将湿地松栽培区划分为4个立地气候区,即:Ⅰ.南亚热带、热带沿海立地气候区;Ⅱ.中亚热带丘陵立地气候区;Ⅲ.暖温带、北亚热带丘陵、平原、岗地立地气候区;Ⅳ.湘、鄂、川接壤山地,四川盆地,黔东南立地气候区.再在各气候区内实测有代表性的8~10a的湿地松标准地171块,分别采用平均胸径、平均树高、平均单株材积证实各气候区内湿地松生长差异.这4个立地气候区可作为湿地松人工林立地类型划分、立地质量评价等经营数表编表单元的依据. 相似文献
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Lin WendiNanjing Forestry University 《林业研究》1993,4(2):18-32
Land for protective forest on the coast has special site conditions,and siteclassification is the scientific basis for seaboard afforestation.The site classification systemon the coast zone and islands of China may be classified into five levels-site region(sub-region),district,class,group,and type.The land division for afforestation is carried outby the principle of enviornmental heterogeneity among regions,sub-region and district onlarge scale,according to the difference of air temperature,moisture and type of coastgeomorphy.It may be classified into 7 regions,12 sub-regions and 55 districts.Themedium and small scaled division for site class,group and type,subdivided in a sitedistrict,are based on medium topography,topographic climate,micro-relief and soil conditions. 相似文献