北京市西山林场游憩林抚育的森林健康评价

Forest health evaluation for tending of recreational forest in Xishan Forest Farm in Beijing city

针对北京市西山林场森林景观质量下降、密度大、自然整枝差、火险等级高等问题；结合森林健康的相关理论与技术，对各林分采取生态疏伐、景观疏伐、修枝、可燃物管理、定株、补植、补造等措施，并对抚育技术进行了森林健康经营与评价；抚育保留密度：侧柏1375∽1975株/hm2，刺槐550∽700株/hm2，黄栌约1100株/hm2，油松约900株/hm2，元宝枫约1588株/hm2时森林健康质量较好；抚育后的森林健康指数（HCI）都有提高；侧柏提高31.27%，刺槐提高22.22%，黄栌提高11.11%，油松提高了15.00%，元宝枫提高17.65%，可见抚育后各林分的森林健康质量都显著提高。这对合理开发和利用西山林场的风景游憩林资源提供了新的经营标准和思路，同时也能为各地区具有类似功能和问题的林分提供健康经营的理论与技术参考。

Confronted with the problems of decline in quality, high density, poorly natural pruning and high fire danger rating of the forest landscape in Xishan Forest Farm in Beijing city, the measures were taken for each forest stand such as ecological thinning, landscape thinning, pruning, combustible management, plants singling and complementary replanting by combining the relevant theory and technology of forest health, and the effects of tending techniques on forest health management were evaluated;for better forest health, the reserved tending density was 1375∽1975 trees？hm-2 for Oriental arborvitae, 550∽700 trees？hm-2 for Robinia pseudoacacia, about 1100 trees？hm-2 for Smoke tree,about 900 trees？hm-2 for Chinese pine and about 1588 trees？hm-2 for Acer truncatum;Every Forest Health Comprehensive index （HCI） has been enhanced after tending with O. arborvitae increasing by 31.27%, R. pseudoacacia by 22.22%, Smoke tree by 11.11%, Chinese pine by 15.00%and Acer truncatum by 17.65%. It is obvious that the forest health quality of each forest stand was significantly improved, which provides new operation standards and ideas for rational development and utilization of the scenic and recreational forest resources in Xishan Forest Farm in Beijing city, at the same time, also provides theoretical and technical references for the health operation of the forest stand with similar functions and problems in different areas.