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马尾松是予南大别山、桐柏山区以及伏牛山南坡主要造林树种,林地面积达17.7万公顷,蓄积519.3万m~3,分别占该区有林地面积的29.4％和蓄积的16.4％。为给科学经营马尾松提供一个模式,在总结国内外林分密度管理图的基础上,研究编制了河南省马尾松经营图。一、资料的收集与整理河南省马尾松自然分布于信阳、南阳、驻马店三地区的20个县(市)。在马尾松集中产区,选择了信阳、罗山、光山、潢川、
Pinus massoniana is the main afforestation species to the South Dabie Mountains, Tongbai Mountain and Funiu Mountain. The woodland covers an area of 177,000 hectares and accumulates 5,193,000 m 3, accounting for 29.4% and 16.4% of the total area of the forestland. In order to provide a model for the scientific management of Masson pine, based on the conclusion of the domestic and international stand density management maps, we studied and compiled the business map of masson pine in Henan Province. I. Data Collection and Arrangement Masson Pine of Henan Province is naturally distributed in 20 counties (cities) in Xinyang, Nanyang and Zhumadian. In the mass production area of Masson Pine, Xinyang, Luoshan, Guangshan, Huangchuan,