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世界栽培水杉的调查(1947~2007年)

A Worldwide Survey of Cultivated Metasequoia glyptostroboides Hu and Cheng(Taxodiaceae) from 1947 to 2007

  • 摘要: 自第一批种子于1947年12月底走出中国国门,著名‘活化石’水杉已在世界上栽培了60年。过去的5年间通过各种调查方式获得了6大洲近50个国家的2535份资料。调查结果显示,水杉除在欧美及东亚等国家栽培非常普遍外,阿根廷、澳大利亚、智利、印度、墨西哥、尼泊尔、新西兰、南非、泰国、土耳其、津巴布韦等国也有成功的栽培。生长最好的是北美植物耐寒带5-9及欧洲和东亚相似气候地区的栽培水杉,植株最高已达38m,最大胸围已达6.2m。调查内容包括引种的时间、栽培地点、株数、高度及胸围,调查单位不仅包括公立的单位,还包括不对外开放的私人住宅。另外,还讨论了栽培用途、限制因子以及原生种群的资源保护等。

     

    Abstract: Since the first group of seeds sent out from China in December 1947,the famous ’living fossil’,Metasequoia glyptostroboides Hu and Cheng,has been cultivated in the world for sixty years.The worldwide survey has been conducted in the past five years through requests at www.metasequoia.org,special announcement in professional journals,citations from various publications,direct correspondences by emails,personal measurement,and herbarium consultation as well as internet searches.The survey yielded 2535 accessions from nearly fifty countries in every continent.Besides most popular in Europe and N.America,this tree has also been successfully cultivated in Argentina,Australia,Chile,India,Japan,the Koreas,Mexico,Nepal,New Zealand,South Africa,Thailand,Turkey and Zimbabwe.The best performance of growth is in the USDA Plant Hardiness Zones 5-9 in North America and Europe as well as the similar area in East Asia.The tallest individual is about 38 meters in height,and the largest is about 6.2 meters in girth.The details of every accession,both in private property and in public institutions around the world,including place cultivated,recent size of height and circumference,and introduction information if available,have been summarized,with further cultivation issues discussed.

     

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