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首先选用生长适宜性指标、抗逆性指标、生态功能指标作为控制层,生长周期、更新能力、生长速度、抗旱性、抗寒性、耐瘠薄性、冠层疏透性和根系特性等8个因子作指标层,用层次分析法对柏木、马尾松、桤木和香樟等20个供选树种进行模型选择,然后对得分较高的树种分别在川中丘陵区的柏木纯林、马尾松纯林、松柏混交林中进行改造后的栽培对比试验。结果表明:(1)模型筛选出适宜川中丘陵区的乔木树种分别为麻栎、栓皮栎,刺槐,桤木,喜树,香椿,马尾松、香樟、柏木9个,灌木树种为马桑,黄荆,火棘3个。(2)从成活率、保存率和生长状况分析,香樟、桤木、喜树、窄冠刺槐、香椿均可用于在柏木纯林中补植,立地条件较好的地块以补植香椿为宜,立地条件差的林分中以补植窄冠刺槐为宜。马尾松纯林中应补植香樟和栓皮栎,但补植香樟时应选择土层较厚,土壤含水量较高的林分。补植的苗木以2a生大苗为宜。
First of all, we selected growth suitability index, stress resistance index and ecological function index as control layer, growth cycle, renewal ability, growth rate, drought resistance, cold resistance, barrenness resistance, canopy permeability and root characteristics Factor as the index layer, the tree species such as cypress, Pinus massoniana, Alnus cremastogyne and camphor were selected by using analytic hierarchy process. Then the higher-scoring tree species were planted in pure cedar forest, , Pine and cypress mixed forest after the transformation of cultivation contrast test. The results showed as follows: (1) The tree species suitable for the hilly area of Central Sichuan were clint oak, Quercus variabilis, Robinia pseudoacacia, Alnus cremastogyne, Camptotheca acuminata, Chinese toon, Pinus massoniana, Huang Jing, Pyracantha 3. (2) According to the analysis of survival rate, preservation rate and growth status, camphora, alder, Camptotheca acuminata and Chinese toona sinensis can be used in replanting plots of pure cedar wood, It is advisable that the stand sites with poor conditions should be replanted with narrow crown black locusts. Pinus massoniana pure forest should be planted camphor and cork oak, but replanting camphor should choose thicker soil, soil moisture higher stand. Replanting seedlings to 2a raw seedlings is appropriate.