摘要 重庆市渝北区统景林场通过实施森林质量精准提升工程，以退化林修复、针叶纯林改造为主要措施，培育楠木、香樟等珍贵树种为主的森林资源，改善了森林林分结构，提升了森林景观效果，增强了森林抗御自然灾害的能力，充分发挥了森林的生态效益。

关键词 森林质量;精准提升;林分结构;景观效果;生态效益

中图分类号：S750 文献标识码：A 文章编号：2095-3305（2019）05-105-02

DOI： 10.19383/j.cnki.nyzhyj.2019.05.044

Measures and Effect of Implementing Precise Forest Quality Improvement Project in Tongjing Forest Farm， Yubei District of Chongqing

OU Jian（Tongjing Forest Farm in Yubei District of Chongqing，Chongqing  401120）

Abstract Tongjing Forest Farm in Yubei District of Chongqing had improved forest stand structure， enhanced forest landscape effect and enhanced forest resistance to natural disasters by implementing precise forest quality improvement project. It took restoration of degraded forests and transformation of coniferous pure forests as main measures， and cultivated forest resources dominated by precious tree species such as Nanmu and Cinnamomum camphora. The forest stand structure had been improved; the forest landscape effect had been enhanced; the ability to resist natural disasters had been strengthened， and the ecological benefits had been brought into full play.

Key words   Forest quality;Precise improvement; Forest stand structure;Landscape effect;Ecological benefits

统景林场位于重庆市渝北区东北部，管辖铜锣峡背斜和明月峡背斜的2个向斜山脉的北段，北面与邻水县交界，东北面至東面与长寿区接壤。林场资源分布区域涉及统景、大湾、大盛、古路4个镇，呈带状分布，南北长约40 km，东面宽约18 km。林场总经营面积1 440 hm2，其中有林地面积1 400.6 hm2。活立木蓄积量7.8万m3，森林覆盖率98%。

1   基本情况

在实施森林质量精准提升工程以前，林场以20世纪营造的马尾松和杉木等人工纯林为主，大多是单层林，林分结构单一，森林火险、森林病虫害易发高发，对森林资源破坏极大。特别是近几年来发生的松材线虫病疫情，导致了大量松树枯死，不仅对林场的松林资源、自然景观资源造成严重破坏，还造成了严重的经济和生态损失。在耗费大量的人力、物力和财力对松材线虫病疫木进行除治后，除治区域原有的林分郁闭度降低，有的地方还形成了较大的林窗。

2 具体措施

针对松材线虫病疫木除治区域的森林状况，为着力提升森林景观效果，改善森林林分结构，在渝北林业局的统一部署下……