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我们通过对10年生的人工阔叶红松林和红松纯林的土壤理化性质、水热状况的观测研究,试图了解不同林型对土壤条件的影响,以便为选择最佳的营林措施,保持良好的土壤生态环境,提供有益的科学数据。一、观测地点和研究方法1.观测地点研究的林分位于桓仁县八里甸子乡大南沟村(北纬41°13’,东经124°51’)尹家大坡的10年生红松林内。该林地地势平坦,坡度5-10度,土壤为棕色森林土,土壤深为20-40厘米。原为以杨桦为主的低产阔叶次生林,1973年冬进行改造作业,翌春造林,作业面积230亩。作业方式有两种,一是择伐改造,每亩保留胸径8厘米左右的有前途的中小径木20株左右,在其林冠下造红松,诱导成人工阔叶红松混交林;
Through the observation and research on the soil physical and chemical properties and the hydrothermal conditions of the 10-year-old artificial broad-leaved Korean pine and Korean pine forests, we tried to understand the impact of different forest types on the soil conditions in order to select the best forest management measures Good soil ecological environment, to provide useful scientific data. I. Observational sites and research methods 1. Stands of the study sites The stands are located in 10-year-old Korean pine forests in Dayanggou Village, Bali County, Huanren County (41 ° 13 ’north, 124 ° 51’ east longitude). The flat topography of the forest, slope of 5-10 degrees, the soil is brown forest soil, the soil is 20-40 cm deep. It was originally a low-yield secondary broad-leaved forest dominated by Yang Hua. In the winter of 1973, reconstruction was carried out. In the next spring, the plantation area was 230 mu. There are two modes of operation, one is the selective cutting transformation, retaining about 20 cm in diameter at a diameter of about 20 centimeters of the path of about 20, under the canopy made of Korean pine, adult broad-leaved Korean pine mixed forest;