中文摘要：

根据直线位移传感器配合机械结构原理、无线传感器网络，并结合太阳能供电系统，建立了一种树径无线遥测及林地环境监测系统。经过初步测试，该系统可以顺利运行，太阳能供电系统的应用大大地延长了系统节点的供电时间。该系统实现对立木胸径、林地温、湿度等信息的实时监测，在实现对林地监测的同时，研究树木直径生长生理特性与其影响因子的相关关系，并可为建立森林资源信息库的提供可靠的数据。

英文摘要：

A wireless remote monitoring system for diameter at breast height （DBH） of tree and forestry environment was established based on linear displacement sensor with a mechanical structure and combined with wireless sensor network and solar power system. After initial testing, the system can run smoothly to achieve the goal of wireless monitoring the growth of DBH, the forest temperature, the humidity and other information in real-time. Meanwhile, the successful establishment of the system can provide a reliable data for establishment of forestry sources information database and for the study on correlation between growth and physiological characteristics and their affecting factors. The application of solar power system can greatly extend the power supply time for the system node.