云南金沙江流域退化天然林干扰成因及退化类型探讨  

Disturbance factors and degraded forest types in the Jinshajiang Watershed of Yunnan Province

作　　者：和丽萍[1] 孟广涛[1] 柴勇[1] 李贵祥[1] 方向京[1] 张正海[1] 

机构地区：[1]云南省林业科学院,云南昆明650204

出　　处：《浙江林学院学报》2007年第6期675-680,共6页Journal of Zhejiang Forestry College

基　　金："十一五"国家科技攻关项目(2006BAD03A0401)

摘　　要：对云南金沙江流域受干扰退化后有代表性的天然植被类型进行调查,分析了导致天然林退化的干扰成因,探讨了该区域强度过伐林、恢复初期的天然次生林、疏林、灌木林以及破坏严重的退化生态系统的退化类型。把人为干扰程度分为微度干扰、轻度干扰、中度干扰和强度干扰等4个等级。对退化天然林类型进行划分,包括微度退化的林分24类,轻度退化的林分类型14类,中度退化林分14类,重度退化林分19类。In the Jinshajiang Watershed, degraded forestland, which included intensively-cut forests, early-restored secondary natural forestland, sparse forestland, brush land, and bare land, was analyzed after disturbance. Disturbance factors were divided into four grades of artificial interference and then ranked. Results of the four grades of disturbance showed： （a） 24 types of degraded forest stands were almost intact forests, （b） 14 types had slight- disturbance, （c） 14 types revealed mid-disturbance, and （d） 19 types showed intensive-disturbance. This grouping will help to better carry out protection of the Jinshajiang Watershed and ecosystem environmental management. [Ch, 2 tab. 16 ref. ]

关 键 词：恢复生态学 金沙江流域 退化天然林 干扰成因 退化类型 干扰程度 

分 类 号：S755.1[农业科学—森林经理学]