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多年来,杨树一直是唐山市平原地区的主要造林树种之一。先后实施的平原绿化达标工程、三北防护林工程、京津风沙源治理工程、特别是在本世纪初开始实施的退耕还林工程以来,速生杨造林得到了大面积的推广。一、速生杨造林情况(一)造林面积大生态文明建设已经纳入国家战略。各级政府也越来越重视生态环境的建设。作为土地使用者的
For many years, poplar has been one of the main afforestation species in the plains of Tangshan. The implementation of the Plain Afforestation Project, the Three North Shelterbelt Project and the Beijing-Tianjin Aeolian Sandy Source Project, especially since the project of returning farmland to forestry started in the beginning of this century, popularized the poplar plantation. I. Afforestation of Growing Young Populations (I) Afforestation Area The construction of ecological civilization has been incorporated into the national strategy. Governments at all levels pay more and more attention to the construction of ecological environment. As a land user