鄂西山区日本落叶松人工林立地分类及质量评价

Site Classification and Quality Evaluation of Larix kaempferi Plantation in Western Hubei Province

[目的]对鄂西山区日本落叶松人工林进行立地分类和质量评价.[方法]以鄂西山区日本落叶松人工林为研究对象,选取143块有代表性的日本落叶松标准地,利用数量化理论I方法对该区日本落叶松人工林进行了立地分类与质量评价研究.[结果]在选取的5个立地因子中,土层厚度、坡向、海拔是影响日本落叶松生长发育的主导立地因子;依据该3个立地因子,构建了鄂西山区日本落叶松人工林立地类型,共划分为16类;16类立地类型按照立地质量得分情况共划分为优、良、中、差4个等级,研究区整体立地质量处于中等水平以上.[结论]立地分类与质量评价结果可为研究区日本落叶松人工林的科学营造及可持续经营提供参考.

[ Objective]To classity and evaluate the site and quality of Larix kaempferi plantation in Western Hubei Province. [ Method]Taking Larix kaempferi plantation in Western Hubei Province as the research object, 143 representative sample plots oi Larix kaempferi plantation were selected to study the site classification and quality evaluation with the method of Quantification theory I. [Result] The results showed that the soil thickness, slope aspect and altitude were the main factors affecting the growth and development of Larix kaempferi in the selected five site factors. Basis for this three main site factors, the site types of Larix kaempferi plantations in Western Hubei were constructed, which were di-vided into 16 categories. 16 types of site types were divided into excellent, good, medium and poor 4 grades according to the site quality score, the overall site quality of the study area was above the middle level. [ Conclusion ] The results of site classification and quality evaluation can provide reference basis for scientific afforestation and sustainable management of Larix kaempferi plantation in the study area.