摘要
基于森林资源一类清查、二类调查数据源的水热条件、土壤、地形等生态背景因子,采用层次分析方法确定各评价因子的权重,构建林地立地质量评价指标体系,并根据林地现实状况,综合确定不同质量等级林地的生产潜力,以此对比分析森林现实与潜在生产力。以江西省赣州市为例,结果表明:(1)赣州市林地质量整体较好,林地质量等级为好和中等的分别占20.89%%和45.89%,合计高达66.78%;(2)赣州市98.45%的森林未达到林地生产潜力水平,特别是中幼龄林每公顷年平均生产力(2.15 m3·hm-2·a-1)仅约为潜在水平的四分之一;(3)赣州市森林蓄积量测算能增加1 201万m3,森林抚育经营潜力巨大。
Based on ecological factors of hydrothermal condition,soil and topography form the conditions from the forest resource survey,a forest resource evaluation index system for forestland quality was built with analytic hierarchy process.The forestland potential productivity was calculated,and compared with the reality productivity.Taking Ganzhou (in Jiangxi Province) as an example,the results showed:(1) the overall forest-land quality was preferably,the sum of area rate for good (20.89%) and medium (45.89%) was high as 66. 78%;(2) the area rate of forests (98.77%) did not reach the level of land production potential,the immature and young forests only occupied about one fourth (2.15 m3· hm-2· a-1) of the potential productivity;(3) the forestland has a huge potential increment of about 12.01 million m3 under suitable management.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2014年第5期1159-1166,共8页
Acta Agriculturae Universitatis Jiangxiensis
基金
科技部863课题(2013AA12A302)
国家林业局"基于清查资料的产地指数评价方法和制图技术研究(2014K-8)
国家林业局项目"全国森林生物量调查建模技术指导与模型建立"专题
关键词
森林资源二类调查
层次分析
林地质量
生长量
生产潜力
second class survey of forest resource analytic hierarchy process forestland quality growth potential productivity