山桐子在重庆市不同石漠化治理地区适应性比较

以株高尧地径尧冠幅尧侧枝轮数尧叶面积尧叶鲜重等的年净增长率等为比较指标袁采用多目标灰色关联投影法袁比较分析山桐子在重庆市中梁山尧万州杨家湾和彭水新田3 地石漠化治理过程中造林第1 年和第2 年的生态适应性遥结果表明袁造林后第2 年山桐子在杨家湾的适应性强于在彭水新田袁而中梁山最弱袁且差距远大于第1 年遥

Comparison of Idesia polycarpa adaptability in different stone-desertified area in Chongqing

The multi -objective grey relation projection method was used to analyze the ecological adaptability of Idesia polycarpa which had been planted for 1 and 2 years at Zhongliang mountain, Yangjiawan of Wanzhou and Xintian of Pengshui, where the 3 areas existed rocky desertification, and planting I. polycarpa was to control rocky desertification, with the annual net growth rates of plant height, ground diameter and crown, lateral branch number, leaf area and raw heavy of leaf as the comparative indicators. Results showed that the adaptability of I. polycarpa planted for 2 years was better than that planted for 1 year, and the area showed that Yangjiawan was the best, and Xintian was the second, while mountain Zhongliang was the worst of all.