摘要
通过对三明市生态公益林的调查分析。采用数量化理论Ⅰ对不同生态公益林以林分水源涵养功能的优劣进行功能性等级类型划分．结果表明：对林分水源涵养功能影响较大的因子，按回归偏相关系数t的大小依次为土层厚〉凋落物量〉非毛管孔隙〉稳渗速度〉土壤密度〉初渗速度〉郁团度〉水稳性团聚体含量；以得分值高低可分为高效型（902．67～687．21）．中等型（687．20～579．48）、低能型（〈579．47）三种类型；经对28种生态公益林林分类型进行检验，高效型林分有7个，占总数的25％，中等型11个。占总数39．3％，低能型10个．占总数的35．7％；有75％的林分生态功能（林分水源涵养）具有潜在的提升空间，有必要而且必须进行水源涵养功能性改良．
Based on the extensive investigation and the quantitative theory model I, the ecological functions of different ecological forests in Sanming were evaluated. The results are as follows; the influencing factors on water conservation are in the sequence of soil thickness〉litter production 〉 non, capillary pore 〉 the speed of steady infiltration 〉 soil bulk density 〉 the speed of initial infiltrationS＇canopy density〉 the content of soil aggregation, According to their scoring, the ecological forests of Sanming city can be divided into highly efficient ecological type, medium ecological type and low ecological type. There are seven highly efficient ecological types, eleven medium ecological types and ten low ecological types among the twenty-eight kinds of ecological forests in Sanming city. And about 75 percent of them need to be improved for their potential ecological function on water conservation.
出处
《中南林学院学报》
CSCD
北大核心
2006年第2期33-37,42,共6页
Journal of Central South Forestry University
基金
三明市科技局项目“生态公益林功能性等级评价及其综合经营技术研究”部分研究内容.
关键词
森林生态学
生态公益林
水源涵养功能
等级评价
三明市
forest ecdogy
ecological forest
water conservation function
grade evaluation
Sanming
