琅琊山风景名胜区退化黑松人工林自然演替规律的研究

Study on Natural Succession Regularities of Degraded Pinus thunbergii Plantations in Langyashan Scenic Area

琅琊山风景名胜区是江淮丘陵地区石灰岩分布相对集中的山地,岩石裸露、土壤瘠薄,加上四季交替和雨水分布极不均匀形成的易旱易涝气候特征,以及不合理的人工造林等原因,导致出现较大规模的黑松人工林退化现象,生态和景观功能降低。本文针对退化的人工黑松林中稀疏的落叶阔叶树种群,提出加强封禁保护措施,进一步促进退化黑松林地的自然演替,破解风景名胜区石灰岩山地退化林更新造林难题,促进自然生态修复,实现森林景观的稳定性和可持续经营目标。

Langyashan Scenic Area is a relatively limestone -concentrated hilly area in Jianghuai Hilly Region with bare rocks and poor soil. Such causes as drought -prone and flood-prone climatic features due to extremely uneven rainfall in four seasons in the area and irrational afforestation practice have led to a relatively large -scale degradation of Pinus thunbergii plantations and reduction of their ecological and landscape functions. In this paper, aimed at conserving the population of sparse deciduous broad -leaved trees in the degraded Pinus thunbergii plantations, an enclosed conservation measure to facilitate forest restoration was put forward to further promote natural succession of Pinus thunbergii forestland and solve the hard problem of reforestation for degraded forests in scenic limestone hilly areas, promoting natural ecological restoration and realizing stability of forest landscape and objectives of sustainable forest management.