<正>利用目本神奈川县960-1995年的林业统计资料、农林业普查数据和森林面积与人口数量关系的数学模型。对该区域森林面积的减少趋势进行了分析。结果表明：随着人口的增加，居民人均森林面积在逐渐减少。在人口增加10%的情况下，该区36个市、镇、村的人均森林面积减少率分布为1%～92%。大部分市、填、村的可决系数（τ°）都在0.9以上。根据森林面积减少率的不同和政府财力的差异，笔者提出了通过政府购买。实现国有化、公有化，以及对土地开发行为进行长期监控，降低成本等对城市近郊林的保护对策。

Laser microdissection provides a rapid isolating and purification modern method for biological tissues and cellular preparations. It directly cuts objects from heterogeneous tissues under the microscope. This review concerned an up-to-date advance in Laser microdissection techniques which are applied on to the plant cell and molecular biology researches in regard with the sample preparation, gene expression analysis, DNA and protein studies etc. Meanwhile, possible directions for future development of laser microdissection in plant research were put forward.