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利用系留气球观测系统观测了沿海防护林体系海陆风环流时近地面的风、温、湿廊线特征，有如下结论：（１）海防林体系海陆风廓线均呈单峰形，但海风的厚度比陆风大；（２）海防林体系对近地面层的海陆风有较明显的减弱作用，但对陆风的影响高度比对海风的影响高，在林带高度附近风速降低最多，１～１．５Ｈ可降低５０％～６０％，１．５～５Ｈ可降低２０％～３０％，（３）对近地面层有一定的增温增湿作用，防风环流时１ｍ高度可增温约１℃，增加比温１．０ｇ／ｋｇ。
The characteristics of wind, temperature and humidity near the surface of coastal shelterbelts were observed using the tethered balloon observing system. The conclusions are as follows: (1) Both the land-sea and land-surface profiles of the shelterbelt are monomodal, but the sea breeze (2) The forest-shelterbelt system has more obvious attenuation effect on the sea-land breeze in the near-surface layer, but it has a higher impact on the land-wind than the impact on the sea breeze. The wind speed decreases most in the vicinity of the height of the forest belt, 1 ~ 1. 5H can be reduced by 50% -60%, 1.5-5H can be reduced by 20% -30%; (3) There is a certain degree of warming and humidification effect on the near ground surface, Increase the specific temperature 1.0g / kg.