Dry matter production, population structure and environmental conditions of the spring ephemeralErythronium japonicum growing in various habitats differing in sunlight exposure in cool temperate Japan
Dry matter production, population structure and environmental conditions of the spring ephemeralErythronium japonicum growing in various habitats differing in sunlight exposure in cool temperate Japan
复制标题
日本冷温带日照不同生境中生长的春季短命红藻的干物质生产、种群结构和环境条件
DOI：
10.1007/bf02523614
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发表时间：
1997
影响因子：
2
通讯作者：
Nobutaka Nagasawa
中科院分区：
文献类型：
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作者：
S. Sawada;Saori Chida;Yuuki Sawaguchi;Nobutaka Nagasawa
本文研究了生长在落叶阔叶蒙古栎（Quercusmongolicaforest）地上的刺桐（ErythroniumjaponicumDecne）的物候、干物质生产、种群结构和环境条件。林分）、万年青针叶树种柳杉人工林（C.林分）和裸露的土地留下3年后，清除森林组成的CNOQ。蒙古松和赤松（裸林）在日本的冷温带。乔木林的平均种群密度远高于裸地，而开花植物的平均数量却不到裸地的一半。在C. j.林分均低于Q. m.林分的幼苗数。在这一点上，我的立场比在裸露和C。j.stands.它们在前一个林分的1年生存率似乎也明显高于其他林分。裸地林分的地上部分和地下部分比其他两个林分都受到更严重的热胁迫和水分胁迫。生长在Q. m.林分比裸林和C. J.分别。裸地的植物没有像在Q.站，而那些在C。林分的光合作用过程受到万年青针叶种植园地面光照条件的严重限制。本文从环境条件的差异出发，讨论了三种生境中性成熟植物的数量、种群密度和结构以及净生产量的差异。
Phenology, dry matter production, population structure and environmental conditions were examined inErythronium japonicumDecne plants growing on the floor of a deciduous broad-leavedQuercus mongolicaforest (Q.m. stand), an evergreen coniferousCryptomeria japonicaplantation (C. j.stand) and bare ground left for 3 years after the clearing of a forest composed of youngQ. mongolicaandPinus densifloratrees (bare stand) in the cool temperate zone of Japan. The average population density of the plants growing at theQ.m.stand was much higher than that observed at the bare stand, whereas the average number of flowering plants at the former stand was less than half of that at the latter. The population density and number of flowering plants growing at theC. j.stand were both less than 30% of those at theQ. m.stand. The number of seedlings at theQ. m.stand was much more than that at the bare andC. j.stands. Their survivorship rate over 1 year at the former stand also seems to be significantly higher than those at the other stands. Their aboveground and belowground parts at the bare stand were exposed to more severe heat and water stress than those at the other two stands. The net production per leaf area of the plants growing at theQ. m.stand was two and six times larger than those at the bare andC. j.stands, respectively. The plants at the bare stand did not use the available solar radiation as efficiently for dry matter production through photosynthesis as those growing at theQ. m.stand, whereas those at theC. j.stand are strongly restricted in their photosynthetic process by the significantly limited light condition on the floor of the evergreen coniferous plantation. The differences in the number of plants reaching sexual maturity, the density and structure of the population and the net production between their three habitats are discussed here from the standpoint of differences in environmental conditions.
F.Yoshie：“生长温度和冬季持续时间对森林春季地球植物赤藓红叶物候的影响。”
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