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李彦. 青海东部6种杨树种质资源调查与优树选择、收集初报[J]. 浙江林业科技, 2019, 39(5): 77-81. DOI: 10.3969/j.issn.1001-3776.2019.05.012
引用本文: 李彦. 青海东部6种杨树种质资源调查与优树选择、收集初报[J]. 浙江林业科技, 2019, 39(5): 77-81. DOI: 10.3969/j.issn.1001-3776.2019.05.012
LIYan. Investigation on 6 Populus Species Germplasm Resources in the Eastern Qinghai Province and Collection of PlusTrees[J]. Journal of Zhejiang Forestry Science and Technology, 2019, 39(5): 77-81. DOI: 10.3969/j.issn.1001-3776.2019.05.012
Citation: LIYan. Investigation on 6 Populus Species Germplasm Resources in the Eastern Qinghai Province and Collection of PlusTrees[J]. Journal of Zhejiang Forestry Science and Technology, 2019, 39(5): 77-81. DOI: 10.3969/j.issn.1001-3776.2019.05.012

青海东部6种杨树种质资源调查与优树选择、收集初报

Investigation on 6 Populus Species Germplasm Resources in the Eastern Qinghai Province and Collection of PlusTrees

  • 摘要: 2015年5-10月,对青海东部湟水、黄河流域10个县(区)的青杨Populuscathayana,小叶杨P. simonii,冬瓜杨P. purdomii,新疆杨P. alba var. pyramidalis,河北杨P. hopeiensis,毛白杨P. tomentosa6种杨树天然林及人工林开展资源调查。结果表明,青海东部湟水、黄河流域6种杨树种质资源主要分布区在海拔1800 ~ 3100 m、年平均气温2 ~ 9℃、年平均降水量300 ~ 500 mm、≥10℃年有效积温700 ~ 3 000℃地区;青杨的分布面积最大(20 978.6 hm2)、数量最多,其次为小叶杨(1 732.21 hm2)、冬瓜杨(950.95 hm2)、新疆杨(91.72hm2)、河北杨(88.94 hm2)、毛白杨分布最少(仅12.31 hm2);从分布区域看,6种杨树资源在互助县分布最多,化隆县最少,分布排序为:互助县>湟中县>大通县>西宁市>民和县>乐都区>循化县>湟源县>平安区>化隆县。结合调查开展优树选择,共异地收集、保存优树549份,建立优良种质资源保存圃1.8hm2。

     

    Abstract: Investigations were implemented during May and October of 2015 ongermplasm resources of Populuscathayana, P. simonii, P.purdomiiP.alba var. pyramidalis, P. hopeiensis andP.tomentosa in the eastern Qinghai province. The result demonstrated that P. cathayanahad the largest distribution area and quantity, followed by P. simonii,P.purdomii, while P.tomentosa the smallest. Based on the investigation, 549 plus trees were collected and conserved, and 1.8 haof germplasm base was established.

     

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