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首页> 外文期刊>日本草地学会誌 >ecological consideration for the distribution of natural grassland vegetation zones in relation to the climate and climate change in Japan. 2. The natural grassland vegetation types in relation to the climatic factors
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ecological consideration for the distribution of natural grassland vegetation zones in relation to the climate and climate change in Japan. 2. The natural grassland vegetation types in relation to the climatic factors

机译：与日本气候和气候变化有关的天然草地植被带分布的生态学考虑。 2.天然草地植被类型与气候因素的关系

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Our previous paper showed that the zoning of the Japanese grassland vegetation based upon the climate corresponds to the range of Zoysia japonica-type grasslands, Sasa-type grasslands, Pleioblastus chino-type grasslands. In the present paper we examined the relationships between these types of grassland and the climate factors. The border between the subarctic zone and the cool-temperate zone corresponded to the northern limit of Zoysia japonica type grasslands. In latitudinal distribution, this border corresponded roughly with the line that the coldness index is - 35 deg C o month and that the average minimum temperature of the warmest month is 17 deg C. However, in altitudinal distribution, this border transferred to the cooler and higher-latitude zone. Futher investigation on the climate index of the altitudinal border is needed. The border between the warm-temperate zone and the subtropical zone corresponded to the southern limit of Zoysia japonica-type grassland and the northern limit of Zoysia tenuifolia-type grassland. This border corresponded roughly with the line that the warmth index is 170 deg C month or that the annual mean temperature is 19 deg C. It was indicated that the border between the cool-temperate zone and warm-temperate zone was the southern limit of Sect. Macrochlamys Nakai, Sect. Sasa (Eusasa Nakai) and Sect. Grassinodi Nakai and the northern limit of Pleioblastus china. This border was suggested to correspond to the line that the warmth index is 80-85 deg C - month andthat the maximum snow depth is 40cm. According to the distribution of grassland vegetation based upon the climatic factors in the present study, the distribution of the cool-temperate zone grassalnd including the subalpine zone was expressed to be widerthan that of the actual grassland. This can be corrected by taking account the growth limit of Zoysia japonica-type grasslands in higher altitude at each latitude into consideration. The relationship with the climatic factors still remaines to be solved
机译：我们以前的论文表明，日本草原植被根据气候的分区与结缕草型草原，Sasa型草原，Pleioblastus chino型草原的范围相对应。在本文中，我们研究了这些类型的草地与气候因素之间的关系。亚弧带与冷温带之间的边界对应于结缕草型草原的北界。在纬度分布中，该边界大致对应于以下一条线：冷度指数为-35℃o月，最暖月的平均最低温度为17℃。但是，在纬度分布中，该边界转移到较冷的月份。高纬度区。还需要进一步研究海拔边界的气候指数。温带与亚热带之间的边界对应于结缕草型草原的南界和结缕草型草原的北界。该边界与温暖指数为170摄氏度月或年平均温度为19摄氏度的线大致对应。这表明冷温带和暖温带之间的边界是该区的南边界。 。 Macrochlamys Nakai，Sect。 Sasa（Eusasa Nakai）和Sect。 Grassinodi Nakai和苦竹中国的北部界限。建议该边界与温度指数为80-85℃-月，最大积雪深度为40cm的线相对应。根据气候条件下草地植被的分布，本研究认为包括亚高山带在内的温带草场的分布要比实际草场的分布要宽。可以通过考虑每个纬度上海拔较高的结缕草型草原的生长极限来纠正。与气候因素的关系仍有待解决

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