文山州岩溶山区退化植被的调查及其恢复对策

在对文山州岩溶山区退化植被进行调查和研究后发现:乔木次生林的物种丰富,土壤种子库中的灌木种子量、无性繁殖体充足,而灌木丛、草地土壤种子库的灌木种子、无性繁殖体数量都不足,特别是草地更是稀少。岩溶山区植被遭受破坏或退化,是其生态失衡及呈现“石漠化”的根本原因。恢复岩溶山区的生态平衡,治理“石漠化”,其根本措施是退化植被的恢复。岩溶山地退化植被的恢复应考虑不同类型退化植被的特点采取不同的措施,乔木次生林以抚育间伐为主,灌丛林、草地采取人工补植补播当地物种的种苗并配以抚育措施。

An Investigation and Suggestion on the Recovery of Degenerating Vegetation in Karsting Area in Wenshan

The main reason of the imbalance of nature and the petrifaction in the karsting area is because the vegetation being damaged and retrograded there.To return the natural balance and barness the Petrifaction in the karsting area,the main measure is to recover the degenerating vegetation.After the investigation for 3 Rinds of degenerating vegetation in 24 fields of 3 villages with the karsting feature in Wenshan prefecture,the investigation including the biomass and the warehouse for soil seed-breeding,people found the species in the high forest is very rich,the number of bush seeds in the warehouse for soil seed-breeding and the asexual reproducing substance there is very sufficient,while the number of bush seeds and the asexual reproducing.Substance in the warehouse for bush and grass soil seed breeding is insufficient,especially in the grass.The recover for the retrograding vegetation in karsting area should consider different characteristic for several of them,then atop different measure. For the high forest,we should nurture and not to cut it frequently.While for the buss and grass,both of the artificial planting and nurture are best ways.