【摘要】 本文通过对桃江县不同毛竹笋用林基地8个固定样地多年来的持续调查与观测,结合桃江县的气象数据,研究了异常天气对毛竹笋用林生长的影响。结果表明:2011年桃江地区毛竹出笋期干旱且伴随低温影响时,竹笋产量较往年正常年份下降29.2%,新竹平均胸径降低0.3 cm;2013年毛竹出笋期出现了异常的气温骤升和骤降,竹笋产量较往年正常年份下降16.8%,新竹平均胸径降低0.4 cm;2013年秋季的持续高温干旱天气影响次年的竹笋产量,竹笋产量较往年正常年份下降22.7%,新竹平均胸径降低0.8 cm。研究表明,毛竹笋用林在笋芽分化期和出笋期遭遇干旱天气会显著影响竹笋产量,而笋芽分化期的干旱和出笋期的气温骤变则显著影响当年新竹的平均胸径。更多还原

【Abstract】 Based on the continuous investigation and observation of eight fixed sample plots of different bamboo forest bases of Phyllostachys pubescens in Taojiang County for many years, combined with the meteorological data of Taojiang County, the effects of abnormal weather on the growth of Phyllostachyspubescens forest were investigated. The output of bamboo shoots was decreased by 29.2%, while the average diameter of new bamboo was decreased by 0.3 cm when the weather was dry during the shooting period and accompanied by low temperature. In 2013, the abnormal temperature of bamboo shoots varied sharply.As a result, the output of bamboo shoots was decreased by 16.8%, while the average diameter of new bamboo was decreased by 0.4 cm. The continuous high temperature and drought weather in autumn affected the output of bamboo shoots in the following year. The output of bamboo shoots was decreased by 22.7% compared with the normal years, while the average diameter of new bamboo was decreased by 0.8 cm. The yield of bamboo shoots was significantly affected by the dry weather in the period of shoot differentiation and shooting stage, while the freezing damage caused by the dry weather in the period of shoot differentiation and the sudden drop of temperature in the period of shoot emergence significantly affected the average diameter of new bamboo in that year.更多还原