论文部分内容阅读
本文经过几年的系统观测和研究，对优化模式及其主要优化技术措施的气象效应作出评价，给出了定量指标。优化后的防护林体系防风效能提高3．2个百分点，空气相对湿度提高25个百分点，空气温度提高0．11℃。大网加带防风效能提高气8个百分点，林种布局优化即可实现多方位庇护，又可实现林木速生丰产。为农防林的优化改造提供了科学依据。
After several years of systematic observation and research, this paper evaluates the meteorological effects of the optimization model and its major optimization techniques and gives quantitative indicators. The windbreak efficiency of the optimized shelterbelt increased by 3.2%, the relative humidity of air increased by 25% and the air temperature increased by 0.11 ℃. Large network with wind-proof performance to improve gas 8%, forest layout optimization can achieve multi-directional asylum, but also to achieve fast-growing forest yield. It provides a scientific basis for the optimization and reform of agricultural defense forest.