摘要
在调查攀西地区三条江河（安宁河、雅砻江、金沙江）８８个标准地的基础上，通过统计分析，揭示出云南松低效林分的结构，提出低效林的辩识类型和相应的改造措施，可以应用于攀西地区长江上游低效防护林改造。
The factors which lead low-benefit protection of Pinus yunnanensis stands were studied after investigation of 88 sample plots distributed in the PianXi Region of pinus yunnanensis in Sichuan Province. By stantistic analysis,identification types and stand structure of low-benefit protective pinus yunnanensis stands were classified.The measures of management and reformation oflow-benefit protection stand were suggested in accordance with the characteris-tics of stands, the properties of forest soil and the condition of enviroment in upper reaches of the Changjiang River.
出处
《四川农业大学学报》
CSCD
1997年第2期236-240,共5页
Journal of Sichuan Agricultural University
关键词
松树
云南松
林分组成
林分类型
林分改造
PINES
PINUS YUNNANENSIS
LOW-BENEFIT FOREST
STAND STRUCTURE
IDENTIFICATION TYPES
STAND CONVERSION.
