森林工程2017，Vol.33Issue(6)：19-24,6.
抚育间伐强度对内蒙古赤峰地区用材林土壤肥力的影响
Effects of Tending Felling on Soil Fertility of Timber Forest in Chifeng Area, Inner Mongolia
摘要
Abstract
In order to study the changes of soil physical and chemical properties of the timber forest after tending felling , seven samples with different thinning intensities were selected as the research object in Chifeng city , Inner Mongolia .The contrast plots were recorded as CK and no logging were carried out .The effects of different thinning intensities on soil physical and chemical properties were analyzed .Principal component analysis was used to establish the evaluation system of soil fertility , and the comprehensive score of soil fertility was calculated.Results showed that the comprehensive scores were: S3 (0.833), S4 (0.795), CK (-0.051), S2 (-0.143), S1 (-0.228 ), S5 ( -0.340 ), S6 ( -0.867 ).Among them, the comprehensive score of S3 and S4 plots was 0.833 , 0.795.The middle thinning intensity of 15%and 20%was beneficial to the improvement of soil physical and chemical proper -ties and accumulation of soil fertility , which was suitable for tending felling of timber forest in Chifeng city , Inner Mongolia .With the increasing intensity of tending thinning , the comprehensive score of the reconstructed plots showed the trend of increasing first and then decreasing, that is, the soil fertility of the reconstructed plots changed first and then became poor .关键词
抚育间伐/用材林/土壤肥力/主成分分析法Key words
Tending felling/timber forest/soil fertility/principal component analysis分类
农业科技引用本文复制引用
王晓伟..抚育间伐强度对内蒙古赤峰地区用材林土壤肥力的影响[J].森林工程,2017,33(6):19-24,6.基金项目
林业公益性行业科研专项(201204509) （201204509）
