青海省乐都区古树名木资源调查与评价

Investigation and Evaluation of Old & Notable Trees in Ledu District at Qinghai Province

为加强古树名木资源的保护管理,采用GPS定位、文献跟踪、资料收集、现地鉴定、数码拍照等方法,开展青海省乐都区古树名木资源的调查与评价。结果表明:古树名木资源共有23株,全部为古树,没有名木,以青杨、柳树、国槐、青扦等树种居多。古树名木中一级保护的有6株、二级保护的有6株、三级保护的有11株。古树名木资源全部以散生状态分布在乡村,权属全部为集体所有。古树名木资源中生长势为正常株的有8株、衰弱株的有11株、濒危株的有4株。古树名木生长环境为良好的有3株、中等的有18株、差的有2株。古树名木树龄分布为108~1008年,平均为336年;树高分布为6~42m,平均为19m;胸围/地围分布为127~870cm,平均为388cm;平均冠幅分布为5~26m,平均为14m。最后提出了有关古树名木资源保护管理的建议。

In order to enhance the protection and management of old & notable trees,we adopted methods of GPS positioning,literature tracking,data collection,field identification,digital photograph and so on, old & notable trees in Ledu District at Qinghai Province were investigated and evaluated. The result showed that there were23 plants of old & notable trees in Ledu District at Qinghai Province, all of them were old trees, none was notable tree. Most of them were Populus cathayana,Salix matsudana,Sophora japonica,Picea wilsonii .There were 6 plants of firstly class protection for old trees, 6 plants of secondly class protection,11 plants of thirdly class protection.They were all distributed in a sporadic state, all rights of ownership belonged to the collective.There were 8 plants in normal conditions of growth,11 plants in flagging conditions of growth, 4 plants in endangered conditions of growth.There were 3 plants in favorable growing environment,18 plants in moderate growing environment,2 plants in poor growing environment.The distribution range of tree age was108-1 008 a, average value was 366 a;the distribution range of tree height was 6-42 m, average value was19 m;the distribution range of tree bust(ground perimeter) was127-870 cm, average value was 388 cm;the distribution range of average crown width was 5-26 m, average value was14 m. Finally, some suggestions on the conservation and management of old & notable trees were put foruard.