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基于竹子开花标本、分类纪录及一些未经证实的文献,用时间换算法检验开花周期、干旱周期和太阳黑子最大值出现周期等,得出以下结果: 1.从1580年以来,中国的干旱周期是22年,与印度极端干旱周期相接近;洪水周期为39年,与印度的洪水周期更为接近。中国竹子群体开花在干旱期间或干旱后两年中非常频繁地发生。四川在1942—1962年是湿润期,这时竹子群体开花则少见。 2.1870年以后,在喜马拉雅西部出现的干旱周期为33年,与当地总的竹子开花周期相同,但其谐波曲线不同。全部开花都在干旱后1—5年中发生,14种竹子群体开花都发生在这些年份。喜马拉雅东部的竹子群体开花在极端干旱后1—2年中发生。 3.有几个喜马拉雅东部地区的竹子开花,集中在太阳黑子平均11年与22年循环最盛期与最弱期(见表1)。一般来说,这种周期比竹子本身内部开花周期为弱,尽管这种关系的机理还有待于发现。月亮轨迹交点的运行周期为18.6年,它与竹子开花周期关系尚不得而知,但鉴于喜马拉雅东部竹子群体开花周期为20年弱,两者的关系应加以考虑。 4.1901—1976年,在构成中国西藏地震带的主要地区——四川与云南的6次大地震中,出现明显的22年周期。最近收集的资料表明:地震与太阳黑子在北极区的最大值前的最小值有关,以及与中国扬子江流域的干旱年份及竹子开花期有关。在每年地震3次以上的5年期间,与每年地震1次以下的相同年份比较,竹子开花次数要高3.9倍。
Based on the flowering specimens of bamboo, the classification records and some unconfirmed documents, the time-shift method was used to test the flowering period, the drought period and the maximum period of sunspots. The following results were obtained: 1. Since 1580, the drought period Is 22 years close to the period of extreme drought in India; the flood period is 39 years, which is closer to the flood cycle in India. Flowering of Chinese bamboo populations occurs very frequently during drought or two years after drought. Sichuan in 1942-1962 is wet period, when the bamboo population is rare. 2. After 1870, the drought period in the western Himalayas was 33 years, which is the same as the total bamboo flowering period in the region, but with different harmonic curves. All flowering occurred in 1-5 years after drought and all 14 species of bamboo flowering occurred in these years. The flowering of bamboo populations in the eastern Himalayas occurs 1-2 years after extreme drought. 3. There are several bamboo blooms in eastern Himalaya that focus on the average 11-year and 22-year cycles of sunspots and the weakest (see Table 1). In general, this cycle is weaker than the internal flowering period of bamboo itself, although the mechanism of this relationship remains to be discovered. The moon trajectory intersection has a 18.6-year cycle and its relationship to the flowering period of bamboo is not known, but the relationship between the two should be taken into consideration given that the flowering period of the eastern Himalayan bamboo population is 20 years old. 4. In 1901-1976, a clear 22-year cycle occurred in the six major earthquakes that constituted the major areas of the Tibetan seismic belt in China - Sichuan and Yunnan. Recent data have shown that earthquakes are related to the minimum of sunspots before the maximum in the Arctic and to the year of drought and the flowering of bamboo in the Yangtze River basin in China. During the five years of more than three earthquakes each year, the number of flowering bamboo was 3.9 times higher than that of the same year less than one earthquake per year.