丹江口湖北库区水源涵养林改造技术研究

典型调查结果表明:丹江口湖北库区周边森林植被类型主要为马尾松—栓皮栎—茅草、马尾松—白刺花—茅草、松柏混交林和以栓皮栎为代表的阔叶林,且大多是人工针叶林,地带性阔叶次生林较为少见。通过结构与功能分析表明,库区森林植被特征表现为林种结构、林内空间结构和林龄结构单一,林分老化、退化现象严重,林分水源涵养等生态功能下降。针对以上突出问题,提出了相应林分改造技术措施,为库区生态林体系建设提供依据。

Study on Upgraded Technique of Conservation Water Resource Forest of Reservoir Region in Danjiangkou of Hubei Province

The result of survey showed that the forest vegetation types around the reservoir region in Danjiangkou of Hubei Province mainly were Pinus rnassoniana - Quercus variabilis - Linear Stonecrop, Pinus rnassoniana - Pophora viciifolia Hance - Linear Stonecrop, the mixed forest of pine and cypress and the broadleaf forest associated with Quercus variabilis, mostly artificial coniferous forest and relatively rare zonal wide - leaved secondary forest. The structure and function analysis showed that the characteristic of forest vegetation in the reservoir region were that the categories structure of forest, forest space and forest age were single, the aging and degeneration of stand were serious, the ecology structure of conservation water resource forest was declined. Aiming at those extrusive questions, the stand upgrade technique was put forward as the foundation of the construction of ecology forest system.