【摘要】 对分布在我国西南地区的云南箭竹的资源状况进行调查。结果发现云南箭竹的分布范围较广,其分布区介于北纬24°13~′28°58′之间,其生长适应海拔范围大概为1 700~2 600 m;最冷月的平均气温要大于4.2℃,年平均气温要介于17.8~19.7℃,年极端低温不能低于-11.2℃,≥10℃的积温不低于3 788.3℃;年降雨量平均为1 054.8 mm,介于559.4~1 600.0 mm之间,年平均有霜日数不能多于123.5d。目前发现云南箭竹共有3个变异类型即原变型,东坡竹和脱毛昆明实心竹,东坡竹主要分布在大理鸡足山,脱毛昆明实心竹主要分布在昆明市西山和嵩明县。更多还原

【Abstract】 The resource status of F.yunnanensis distributed in Southwest China was investigated.The results showed that F.yunnanensis widely distributed between latitude 24°13′-28°58′ and altitude of 1 700-2 600 m.The mean air temperature of the coldest month is higher than 4.2℃ and the mean annual temperature is between 17.8-19.7℃,the annual extremely lowest temperature can not be lower than-11.2℃ and the annual accumulated temperature of 10℃ can not be lower than 3 788.3℃.The mean annual precipitation is 1 054.8 mm that is between 559.4-1 600.0 mm and the mean annual frost days are less than 123.5 days.Currently,three variation types have been found,including original variation type,Dongpozhu and Tuomao Kunmingshixinzhu.Dongpozhu is mainly distributed in Jizushan mountain and Tuomao Kunmingshixinzhu is mainly distributed in Xishan mountain and Songming county in Kunming city.更多还原