北京西山地区侧柏人工林健康经营效果研究

以森林生态学理论、森林培育学理论、近自然经营理论为理论基础,以健康评价结果为依据,结合北京西山地区侧柏人工林的现状,提出了一套系统完整的侧柏人工林健康经营模式方案,内容包括林分密度调整,补植更新苗木,林内卫生清理,土壤改良等方面。方案实施后,通过对实施健康经营方案的样地及对照样地的平均胸径、郁闭度、乔木层密度、幼苗更新密度、灌木物种多样性指数、草本物种多样性指数、病虫危害比率、火险等级、土壤有机质含量9个评价指标的对比监测,从生产力、群落结构、抵抗力(干扰)、土壤状况4个方面评价了森林生态系统健康水平的变化。同时对林内小气候和空气负氧离子浓度进行了对比监测,作为健康评价的辅助指标。监测结果显示,实施森林健康经营技术措施的侧柏人工林的健康水平得到了明显改善。

A study on Platycladus orientalis plantation's health management techniques in Beijing Xishan area

This paper based on the forest ecology theory, silviculture theory and the theory of operation near the natural, ac- cording to the healthy assessment result and the situation of Platycladus orientalis plantation of Beijing xishan area, we put forward a set of the Platycladns orientalis plantation＇ s forest health management measures system, which including density restructuring, recruiting update seedlings, stand sanitary clearing, soil improving, and so on. After the implement of the project, according to the contrast monitor of the fostered stand and the contrast stand＇ s the average diameter at breast height, canopy density, tree - density, density of seedlings update, shrub species diversity index Simpson, Simpson herbal species diversity index, worms harm ratio, fire insurance rating, soil organic matter content and so on of evaluation indexes to evaluate the health standards of forest ecos~,stem by the four aspects of productivity, Community structure, resistance（in- terference）, soil conditions. Meanwhile we contrast the inspect result of the small forest climate and air concentration of neg- ative oxygen ions, in order to be the assistant indexes for the health assessment. The results of the inspection showed that the healthy level of Platycladus orientalis plantation which implemented the forest health management measures was obviously im- proved.