湿地松是从美国引进的一种速生、丰产、优质的针叶用材树种。自1974年以来,四川省长江造纸厂先后投资400多万元,营造了16万余亩湿地松造纸用材林,其中9至18年生的湿地松林3500余亩。根据调查,湿地松造纸林在各基地、县、市长势良好。我们对9至18年生的湿地松造纸林进行了抽样调查,并通过解析本分析,对湿地松造纸用材林的主伐年限,蓄积量与出材量加以研究和预测评估。 Slash pine is introduced from the United States a fast growing, high yield, high-quality conifer timber species. Since 1974, the Yangtze River Paper Mill in Sichuan Province has invested more than 4 million yuan, creating more than 160,000 acres of wetland pine timber plantation, of which 9 to 18 years of wetland pine forest more than 3500 acres. According to the survey, wetland pine plantations in various bases, counties, the mayor is in good shape. We conducted a sample survey of wetland pine from 9 to 18 years old and analyzed and analyzed the main cutting years, stock and output of the timber plantation.