【摘要】 从33个农业气象试验站土壤湿度实测资料出发,探讨了近20年黑龙江省土壤水储量变化趋势及时空特征。结果表明:全区生长季0~50 cm土壤水储量总体呈减少趋势,区域差异明显,呈现出山地比平原、气候湿润区和正常区比半干旱区更易变干的特征;在0~50 cm深度范围内,从地表面开始,随深度增加,土壤水储量的减少幅度逐渐增加;季节特征明显,即春秋季减少幅度大于夏季。在土壤水储量变化趋势的研究基础上,结合黑龙江省生态和气候特点,探讨了土壤水储量变化对农业和生态的不利影响,并提出相应的水分管理与调控的措施。更多还原

【Abstract】 The soil moisture data from 33 agro-meteorological stations are employed to investigate the linear trend of soil water storage of Heilongjiang Province,north of Northeast China in recent 20 years.The results show that the whole trend of soil water storage from soil surface to top 50cm for growth season is decreasing.Moreover,not only the dry trend in mountainous regions is more significant than in plain regions,but also the climate wetness of normal regions are easier to be dry than the semi-arid region.From soil surface to top 50cm,the decreasing extent of mean soil water storage for the whole growth season over the region increases with vertical soil depth.The decreasing trend in spring and autumn are more evident than in summer.Combining the local and regional ecological and climatic characteristics,the paper discussed the disadvantageous influences of soil moisture storage on agriculture and ecology in Heilongjiang Province as well as the corresponding regulative measures and water managements.更多还原