长武高原沟壑区沟坡地段热量分布与果业生产

Temperature Difference and Fruit Production in the Valley of Changwu Loess Plateau Valleys and Gullys Region

通过对黄土高原沟壑区沟坡气温多年观测研究 ,总结出沟坡地段的热量分布规律。该地段平均气温与海拔高度的关系被复杂的小地形因素掩盖 ,表现为古代沟坡最高 ,塬面和台坪次之 ,沟底最低 ;古代沟坡除温度日较差和塬面相近 ,还具有绝对温度较塬面缓和、有效积温高于塬面等热量优势 ,是发展温带果业的理想地段。

Through three years stationary temperature surveys on different elevate of the valley in Loess Plateau Valleys and Gullys Region, the temperature distribution pattern in the valley was found. The pattern showed that the average temperature was highest in the upper slope, then decreased successively in the top plain, the terrace, and the bottom. This pattern did not come upon with the common relation between temperature and elevation. Except having the similar daily temperature difference with top plain, the upper slope was also good on moderate absolute temperature and higher effective temperature accumulation. Because of the temperature advantage above, the upper slope is the best geographical area for temperate fruit production in Loess Plateau Valleys and Gullys Region.