摘要
以吉林省汪清县臭松次生林为研究对象,选取有代表性的109组臭松次生林样地,进行海拔、坡度、坡向、坡位、土层厚度等立地因子分级分类,采用数量化理论I的方法,得到影响臭松次生林生长的立地因子重要性排序为海拔>土层厚度>坡度>坡向;然后依据中国森林立地分类理论,构建了吉林省汪清林业局臭松次生林的立地类型表,划分为18种立地类型;将这18种立地类型按立地质量的差异程度组合为较好、中等、较差3大类。立地质量较好的地段,海拔较低、土层较厚、坡度平缓且多为阴坡,林相好,结构完整,综合效益高;立地质量中等的地段包含9种立地类型,是抚育经营的重点,以保持林分稳定,促进进展演替;立地质量较差的地段,海拔较高、土层较薄、坡度大且处于阳坡,林相差、类型复杂,由此森林经营过程中可依据立地分类进行分类施策。
Taking Abies nephrolepis secondary forest of Wangqing county of Jilin province as research objects, 109 sample plots of Abies nephrolepis secondary forest were selected to classify them by altitude, slope, slope aspect, slope position and soil thickness. With the method of Quantification theory I, the importance ranking of these factors was carried out. The top four are respectively altitude, soil thickness, slope and slope aspect. Under the theory of forest site classification, the site classification model of Abies nephrolepissecondary forest of Jilin province which includes 18 site types was built. The 18 site types were classified into good, medium and poor in accordance with the site quality. In the better site quality area, there are low altitude, thick soil, gentle slope and more for shady slope, integrated forest construction and high combined benefits. There are 9 site types in the medium site quality area. This area is the key of intermediate managing, which can remain the stable of forest stand and promote the progress of succession. In the poor site quality area, there are high altitude, thin soil, steep slope and more for sunny slope, poor and complex of forest form. From the above, corresponding tactics can be implemented according to site classification in the process of forest management.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2016年第6期6-10,共5页
Journal of Central South University of Forestry & Technology
基金
林业公益性行业科研专项"天保工程区天然公益林抚育经营关键技术研究"(201204504)
关键词
立地因子
立地分类
臭松次生林
吉林省
site factor
site classification
Abies nephrolepis secondary forest
Jilin province
