---

作 者 ：方正, 马鹏, 刘静艳

期 刊 ：植物生态学报 1991年 15卷 3期 页码：264-273

关键词：大巴山区；巴山松林；种群；

Keywords:Daba Mountain, Pinus henryi forest, Population,

摘 要 ：巴山松(Pinus henryi)林主要分布于大巴山区(包括西段米仓山)，其分布规律是沿大巴山主脊及其两侧支脉东西延伸、断续分布，集中分布在海拔1400—1800m，形成大巴山区特有的一种重要植被类型。目前，大巴山区分布面积最大、保存最完好的巴山松林集中分布在陕西省南郑县黎坪一带。 对巴山松林生境条件、区系组成、群落外貌和结构及动态分析表明，随生境条件的变化，巴山松林的种类组成也发生有规律的变化，但巴山松在群落中始终占据优势地位，并保持着相对稳定的结构组成性状。巴山松更新幼苗较多，且分布比较均匀，天然更新状况良好。优势种群(巴山松)高度与株数的相关性分析表明，巴山松群落中以高大的巴山松个体为主，幼苗幼树较多；巴山松种群各级立木的数量关系反映出巴山松种群具有年龄集中分布的特点，整个种群表现为周期性波状起伏的稳定发展趋势。巴山松种群的稳定性，决定了巴山松群落具有稳定的发展趋势。巴山松材质优良，是大巴山区中山地带优良的造林树种，值得大力发展。

Abstract:

Pinus henryi forest is mainly distributed over Daba Mountain region. By studying the distribution, ecotope conditions, floristic composition, structure and physiognomy and the dynamics of Pinus henryi forest growing well on Lipin area to the north of Micang Mountain ridge (32˚40′—32˚50′N, 106˚30′—106˚45′ E)in the southeastern part of Nanzheng County of Shaanxi Province, we showed the following characteristics of the species:

1. The specific composition of communities of Pinus henryi is related to the ecotope conditions. Although mixed with the broadleaf species and Pinus armandi, Pinus henryi usually dominates the forest. The structure of communities is relative stable.

2. The analysis of Pinus henryi population stracture and dynamics, the self-developmental processes and the natural regeneration indicated that Pinus henryi forest is in steady development.

3. Pinus henryi is a good timbersource. Making rational use and protecting resources is worthy of paying attention.

---