关键词: 砂仁, 沟谷季节性雨林, 海拔高度, 适宜地选择, 气温升高, 交互作用, CO₂浓度升高, 降水变化, 作物

Abstract: Field investigations shows that Amomun villosum was mainly planted in ravine seasonal rain forest, and some in semi evergreen monsoon rain forest and monsoon evergreen broad leaved forest.In order to develop the national economy of mountain area and decrease the disturbance to tropical mountain forest, two criteria, altitude and Amomun production per unit, were selected to classify the sites for Amomun plantation. The most suitable site was at the altitude of 800～1100 m,with a production over 15 kg per 0.0667 hm², unsuitable sites was at the altitude over 1300 m, with a production below 1.9 kg per 0.0667 hm², and the suitable sites had a production of 2.0～14.9 kg per 0.0667 hm² .More attention should be paid to the management of national forests which were most suitable to the Amomuns plantation.

Key words: Amomum villosum, Ravine seasonal rain forests, Altitude, Selection of suitable sites, interactive effects, warming, changing precipitation, elevated CO₂ concentration, crops