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《Journal of Northwest A & F University(Natural Science Edition)》 2011-01
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Comprehensive evaluation of soil fertility in different developing stages of Chinese Fir Plantations

WU Yong-ling1,WANG Bing2,ZHAO Chao1,DAI Wei1,LI Ping3(1 School of Soil and Water Conservation,Beijing Forestry University,Beijing,100083,China;2 Research Institute of ForestEcology,Environment and Protection CAF,Beijing,100091,China;3 Beijing Soil and Fertilizer Working Station,Beijing 100029,China)  
【Objective】 The recearch was conducted to analyze the soil properties variations and give comprehensive evaluation of soil fertility status in different developing stages.【Method】 Based on the determination of main soil physical,chemical and biological properties in the juvenile forest,medium forest,near-mature forest,mature forest and over-mature forest of Chinese fir plantations in Dagang mountain of Jiangxi Province,the variation characteristics of soil properties in different developing stages were explored by analysis of variance and correlation,soil fertility in different developing stages of Chinese fir plantations was further evaluated with principal component analysis.【Result】(1)The soil fertility was obviously deteriorated in the medium forest,but recovered in the near-mature forest with the environmental improvement of forest soil;(2)Close correlations were found between the activity of soil cellulose,β-glucosidase,sucrase and polyphenol oxidase and soil physical and chemical properties,but not for the activity of amylase;(3)Soil organic matter content,total and alkali-hydrolyzable nitrogen content,the number of actinomycetes and fungi,along with the activity of cellulase,β-glucosidase and sucrase,played important roles in the evaluation of soil fertility.【Conclusion】 The soil fertility levels in different developing stages of Chinese fir plantations are in the order of overmature forestmature forest near-mature forestyoung forestmedium forest.
【Fund】: 林业公益性行业科研专项(200804022E、200704005);; 国家“十一五”科技支撑计划项目(2006BAD03A0702);; 国家林业局重点项目(2006-67);; 国家自然科学基金项目(30590381);; 江西大岗山国家级森林生态站项目
【CateGory Index】: S714.2
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