论文部分内容阅读
西藏高原温度年变化小,最暖月温度低、若按全国统一的气候指标划分季节,则西藏无夏、不少地方甚至无春秋,只有冬。实际上按一般的季节标志和内容,西藏每年确实在四季交替的周期性变化。因此、西藏季节的划分应当在全国统一的季节划分思想指导下,针对本自治区的特殊性,结合气象、水文、景观(包括物候)的变化,农牧业生产活动和民族风俗等,以冷暖为主导因素,进行总体分析,决定指标。指标应低于气候的方法,以日平均气温≥12℃为夏季,<12℃—>0℃为春秋季,≤0℃为冬季较为合理。在此基础上,把西藏划为五个季节地理区域,提出了对各区域发展农牧业生产的建议。
Tibet plateau temperature change is small, the warmest month temperature is low, according to a unified national climate indicators to divide the season, Tibet no summer, in many places even without spring and autumn, only winter. In fact, according to the general season marks and contents, Tibet does change periodically in different seasons every year. Therefore, the division of the Tibetan seasons should, under the guidance of the unified seasonal division of thought in the country, aim at the particularity of the autonomous region, combine the changes in meteorology, hydrology, landscape (including phenology), agricultural and animal husbandry production activities and ethnic customs, The dominant factor, the overall analysis, determine the indicators. Indicators should be lower than the climate method, the average daily temperature ≥ 12 ℃ for the summer, <12 ℃ -> 0 ℃ for the spring and autumn, ≤ 0 ℃ for the winter is more reasonable. On this basis, Tibet is divided into five seasons and geographical regions, and proposals for the development of agriculture and animal husbandry in all regions are put forward.