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樟子松(Pimis sylvestris rar.mongolica Litv)自然分布于我国大兴安岭。哲盟从60年代开始,在沙地引种该树种。截至到1987年止,沙地樟子松人工林保存面积已达9万余亩。早期栽植的樟子松已蔚然成林、成材,充分显示了适应沙地,生长快的特性。在哲盟是大有发展前途的树种。一、自然概况与调查方法引种林地区位于北纬42°14′40″～43°42′,东经120°19′40″～123°43′,地处科尔沁沙地腹部,属典型的温带大陆性气候区,年平均气温5.8℃以上,年降水量338mm～446.8mm,多集中于6～8月份,蒸发量大,是降水量的3～6倍;全年八级以上大
Pinus sylvestris (Pimis sylvestris rar.mongolica Litv) naturally distributed in China Daxinganling. Since the 1960s, Zhelei introduced the tree species in the sand. As of 1987, the storage area of Pinus sylvestris var. Mongolica in the sandy land has reached more than 90,000 mu. Early planted Pinus sylvestris has become a natural forest, timber, fully demonstrated the ability to adapt to sand, grow fast. In the philosophy of the League is a promising tree species. First, the natural overview and survey methods Introduction The forest area is located in the latitude 42 ° 14’40 “~ 43 ° 42 ’, longitude 120 ° 19’40” ~ 123 ° 43’, is located in the Horqin Sand abdomen, is a typical temperate continental Climatic zone, the annual average temperature above 5.8 ℃, the annual rainfall of 338mm ~ 446.8mm, and more concentrated in the 6-8 months, the evaporation is large, is 3 to 6 times the precipitation; more than eight large