黄淮海平原饶阳试区农林复合生态系统综合效益分析

Comprehensive Benefits of the Compound Agricultural and Forest Ecosystem in Raoyang Experimental Area in Huang -Huai - Hai Plain

该文对国家重点科技攻关项目黄淮海平原饶阳试区农林复合生态系统作了综合分析,试区由原来的风沙干旱瘠薄盐碱的低产区变为生态环境良好、林茂粮丰的新试区。系统的建立改善了自然生态条件、气象因子以及二氧化碳尘埃含量、鸟类数量等,林木覆盖率由2％提高到20％,粮食产量由每公顷1500余公斤提高到7500余公斤,并成为黄淮海平原中低产地区综合治理示范样板,取得了显著的生态效益和经济效益。

Raoyang Experimental Area in Huang - Huai - Hai Plain, Which used to be a low production area, is under one of the national key scientific and technological projects, now it is changed into a area with good eco-environment, high production and high forest coverage by comprehensive management. The construction of the compound agricultural and forest e-cosystem changed the local natural ecological condition, meteorological factors, content of CO2, dust content in air and bird numbers. Forest coverage was increased from 2% to 20%, crop yield was increased from 1. 5t/ha to 7. 5/ha. Remarkable ecological and economic benefits have been achieved.