摘要： 本文研究了农田林网的辐射状况,通过对林网内外直接辐射、散射辐射、反射辐射、总辐射、净辐射与光合有效辐射的比较,发现林网虽然减少了农田的总辐射,但可以增加净辐射和光合有效辐射,从而提高整个生态系统的能量输入.
关键词:
农田防护林,
生态系统,
辐射平衡,
光合有效辐射,
能量输入
Abstract: This paper deals with the solar radition conditions of a shelterbelt network. Through a comparing of direct radiation, diffuse radiation, reflected radiation, gross radiation, net radiation and photosyntheti cally active radiation between sheltered and exposed conditions, discovered that even though the gross radiation was reduced in the network, sheltered ground had a increase in net radiation and photosynthetically active radiation. So shelterbelt network can make a increase of energy input of this ecosystem.
Key words:
Farmland shelter-forest,
Ecosystem,
Radiation balance,
Efficient pho-tosynthetic radiation,
Energy input
王广钦, 樊巍, 贾佩新, 杨喜田, 刘中雷, 张永杰, 张国平. 农田防护林生态系统环境结构特征的研究——农田林网的辐射平衡[J]. 华北农学报, 1987, 2(2): 119-128. doi: 10.3321/j.issn:1000-7091.1987.02.019.
Wang Guangxin, Fan Wei, Jia Peixin, Yang Xitian, Liu Zhonglei, Zhang Yongjie, Zhang Guoping. A STUDY ON THE CHARACTERISTICS OF ENVIRONMENT STRUCTURE OF THE FARMLAND SHELTER FOREST ECOSYSTEM——SOLAR RADIATION BALANCE A SHELTERBELT NETWORK[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1987, 2(2): 119-128. doi: 10.3321/j.issn:1000-7091.1987.02.019.