河南省日本落叶松适生区研究

根据影响日本落叶松生长的主要因子 ,用灰色关联分析、数量化 -灰色关联分析以及多项式回归等方法 ,对河南省日本落叶松适生区域进行了研究 .结果表明 :河南省适宜日本落叶松生长的海拔范围为 770～ 2 32 0m .其中 ,最适生区海拔为 1 0 30 ,1 6 5 0 ]m ;适生区海拔为 (1 6 5 0 ,2 32 0 ]m ;次适生区海拔为 770 ,1 0 30 )m .影响日本落叶松生长的立地因子大小依次为 :海拔、坡向、土层厚度、土壤种类和坡位 ;气象因子大小依次为 :降水量、相对湿度、日照时数、7月份平均气温、无霜期、蒸发量、年均气温、≥ 1 0℃积温、1月份气温

The suitable area of Larix kaempferi in Henan Province

Based on the main factors affecting the growth of Larix kaempferi , the study on suitable area of Larix kaempferi was carried out by means of gray relating analysis,quantification analysis,polynomial regression and so on. The result shows that the suitable altitude to Larix kaempferi is 770～ 2 320 m; the most suitable area for Larix kaempferi is 1 030 , 1 650 ] m;the suitable area is(1?650, 2?320]m; the less suitable area is 770, 1?030)m. The site factors affecting the growth of Larix kaempferi are altitude, aspect, soil layer thick, the kind of soil, slope site, respectively. Meteorological factors are amount of precipitation, relative humidity, sunshine duration, average temperature in July, frost free period, amount of evaporation, average temperature, more than 10?℃ temperature summation, temperature in January. m; the less suitable area is 770, 1?030)m. The site factors affecting the growth of Larix kaempferi are altitude, aspect, soil layer thick, the kind of soil, slope site, respectively. Meteorological factors are amount of precipitation, relative humidity, sunshine duration, average temperature in July, frost free period, amount of evaporation, average temperature, more than 10?℃ temperature summation, temperature in January.