黄果树风景名胜区低效林分改造措施及生态恢复对策

阐述了黄果树风景名胜区低效林分的现状、特征。根据现有林分和立地条件，将研究区的低效林分划分为低产经济林、低效落叶阔叶林、低效常绿针阔混交林、低效灌木林、低效石山灌丛等5种类型，又把低效石山灌丛分为封山育林和困难地段造林。采用封、补、改、造、抚等措施对不同的低效林分类型，采取不同的改造方式进行改造。并结合该区自然、社会、经济发展的实际情况，从生态、生活和生产方面提出了黄果树风景名胜区石灰岩山地生态建设的对策建议。

Improvement Measures in Deteriorated Forests and Management of Ecosystem Restoration in Huangguoshu Scenic Spot

The deteriorated forests and their features in Huangguoshu Scenic Spot are elaborated. On the basis of forest and site factors, the deteriorated forests in this region are divided into five types: low yield economic forest, deteriorated deciduous broadleaf forest, deteriorated evergreen theropencedrymion, deteriorated arbuscle, deteriorated bush in limestone. The last type can be divided into closed forestland facilitating forestation and vegetation recovery on difficult sites. Management measures to improve deteriorated forests include hillside closure, filling and improving, forestation and forestry diversification. Taking into consideration the conditions of the region's environment, society and economics, these management measures are put forward with proposals for ecosystem construction based on ecology, production and sustainability in Huangguoshu Scenic Spot and karst regions generally.