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Observations from the United States and Denmark. Metasequoia glyptostroboides 50 years out of China. Allgemeine Forst Zeitschrift 53: 1521–1523 (in German).
Metasequoia trees series#
Proceedings of the California Academy of Sciences, Fourth Series 28: 25–58. The California Academy-Lingnan dawn-redwood expedition. Nederlands Bosbouwtijdschrift 64: 219–315 (in Dutch). Growth and form of Metasequoia glyptostroboides (water-cypress) in the Netherlands. VIIième Congrès International de Botanique 125–130. Théorie et classification des climats et des microclimats du point de vue phytogégraphicque. China Plant Red Data Book-Rare and Endangered Plants, Volume 1. An ecological reconnaissance in the native home of Metasequoia glyptostroboides. Response of Metasequoia glyptostroboides in Leningrad to changes in temperature and moisture regime. Metasequoia glyptostroboides-35 years in cultivation at the Kórnik Arboretum. Schweiziterische Zeitschrift fur Forstwesen 138: 139–153 (in German).īugala, W. Juvenile growth of various tree species in the Copera afforestation trial. Journal of the Arnold Arboretum 64: 105–128.īuffi, R. Metasequoia glyptostroboides-Its present status in central China. Most notably, shrubby varieties are known from a mixture of cold climates, but are not always found in extremely cold areas. A mixture of environmental factors may alter M. glyptostroboides through time indicates that trees from different seedlots grown in common garden experiments remain static in their relative growth rates through time trees that grew quickly from the outset continued to outpace slower growing trees eight years later. Based on measurements of the trees from its natural range, maximum height may be just over 50 m. Metasequoia glyptostroboides grows tall quickly and is capable of obtaining stem lengths in excess of 30 m in less than 50 years. No cultivated Metasequoia glyptostroboides Hu et Cheng are known to exist without supplemental water in areas that receive less than ca. Whereas the variability of climate across its natural range is minute, under cultivation it grows across a gradient of 16.3☌ of mean annual temperature and 2360 mm of mean annual precipitation. It is a riparian species that thrives under conditions of abundant growing season moisture availability, although as is shown by its distribution in cultivation, it is capable of sustained growth under drier conditions as well. While it is unlikely that this species will become Extinct due to its wide use as an ornamental tree and presence in many ex situ collections around the world, wild populations remain at risk and conservation measures in situ are a high priority.Metasequoia Miki is a deciduous conifer with a highly restricted natural distribution in central China. The Arnold Arboretum and several partner institutions helped to collect the species from the wild in 1947, then distributed seeds to locations worldwide. This taxon provides a good example of international collaborative conservation efforts. The Global Survey of Ex situ Conifer Collections(Shaw & Hird, 2014) reports that this is the most common threatened conifer taxa reported in ex situ collections globally, with 316 collections.
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The large mature trees have all been afforded some level of protection, although efforts to protect the species more widely are currently lacking. The several subpopulations are all reduced to a few mature individual trees with little chance of natural regeneration due to changes in land use.
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It is a riparian species that occurs only in a limited region in the border area between Hubei and Hunan and in Chongqing Municipality. The bark and foliage are very similar to the other redwood species but unlike these other species, the dawn redwood is deciduous – its needles turn from green to a foxy reddish brown in autumn. Endemic to central China, this species is a living fossil first discovered in the wild in 1943. Although smaller than both of these giant species, it can still grow to a height of at least 60m. The Dawn Redwood is the last surviving member of ancient genus – Metasequoia. It is related to two other members of the cypress family also known as Redwoods: the Coast Redwood and the Giant Redwood.