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我省中东部低山丘陵区是营造用材林和水土保持林的重要基地。为了按不同立地条件类型选择不同的造林树种,采取不同的造林技术措施,达到适地适树,速生丰产的目的。我们于82年4—8月对我省东部地区造林较好的十三个林场、三个公杜进行了不同的立地条件下人工林生长情况的调查。在综合分析资料的基础上,初步提出了我省中东部海拔1000米以下的低山丘陵地区,造林地立地条件类型的划分和造林类型设计。现将有关的几个问题分述如下,供讨论。一、自然概况本次调查为我省中东部海拔1000米以下的低山丘陵区。其地理位置为东经124°47′至131′19′,北纬42°52′至44°37′。包括延边、通化、吉林地区各县(市);长春地区的九台、
The hilly area in the central and eastern part of our province is an important base for creating timber forests and soil and water conservation forests. In order to select different afforestation species according to the different types of site conditions, different afforestation techniques and measures are adopted to achieve the goal of suitable tree-fitting and fast-growing and high-yielding. From April to August in August of 1982, we conducted surveys on the growth of plantations under different site conditions in thirteen farms afforestation well in the eastern part of our province. On the basis of the comprehensive analysis of the data, we initially proposed the division of the types of site conditions and design of afforestation types in the hilly areas below 1000 meters above sea level in the central and eastern part of our province. The relevant issues will now be described below for discussion. First, the natural profile The survey for the eastern part of our province at an altitude of 1000 meters below the hilly area. Its geographical location is longitude 124 ° 47 ’to 131’19’ and latitude 42 ° 52 ’to 44 ° 37’ north. Including Yanbian, Tonghua, Jilin counties (cities); Changchun area of Jiutai,