孙拥康 汤景明 冯骏 林孝培

摘要[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。

关键词日本落叶松人工林；数量化理论Ⅰ；立地分类；质量评价；鄂西山区

中图分类号S791.22文献标识码A文章编号0517-6611（2017）35-0160-04

Abstract[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 of 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 divided 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.

Key wordsLarix kaempferi plantation；Quantification theoryⅠ；Site classification；Quality evaluation；Western Hubei Province

立地分類与质量评价是研究、掌握森林生长环境及环境对森林生产力影响的重要手段，科学的立地分类和质量评价既是林业科学一项重要的基础理论研究，也是实现因地制宜、适地适树、合理利用林地、实现森林集约化经营和可持续经营的基础和关键[1-3]。我国对森林立地类型的研究与实践始于20世纪50年代，当时主要采用苏联立地学派和林型学派的方法对我国一些造林地区的造林类型进行典型设计[4]；20世纪70年代末，我国根据造林发展需要，广泛开展了符合我国实际的立地分类、评价研究，以南方14省（区）杉木科研协作组对杉木等造林树种的立地分类和质量评价研究为标志，我国森林立地类型定性研究的序幕逐步拉开[5]；……