城市森林土壤肥力质量综合评价_单奇华.pdfVIP

29 4 Vol.29, No.4 2009 8 Bulletin of Soil and Water Conservation Aug., 2009 　 1, 2 2 1 单奇华 , 俞元春, 张建锋, 钱洪涛, 徐永辉 (1. , 11400; 2. , 2100 7; ., 214206) 　:, 、 。、、pH 、、6 , 。, (Q) 0.85 ～1.51, 1.19±0.17;, “”(1.0≤Q1.5)90.91%; 、、, 。 , ;。 :;; :A 　　　　　　:1000—288X(2009)04—0186—05　 :S714.2 Comprehensive Estimation of Soil Fertility in Urban Forest 1,2 2 1 SHAN Qi-hua , YU Yuan-chun , ZHANG Jian-feng , QIAN Hong-tao , XU Yong-hui (1.Institute of Subtropical Forestry, CAF, F uyang, Zhej iang 11400, China; 2.College of Forest Resources and Environment, Nanj ing Forestry niversity , Nanj ing, J iangsu 2100 7, China; .Yixing Forestry TechnologicalExtension Station, Yixing, Jiangsu 214206, China) Abstract:It is important and necessary to make further studies on comprehensive fertility estimation in urban forest soil w hich plays an important role in the sustainable development of urban forest and ecosystem.In this paper, modified Nemoro Index (Q)w as used to assess the fertility quality of urban forest soil w ith the 6 indicators of soil bulk density, texture, pH, organic matter, available potassium, and cellulase activities in Nanjing City.Results show ed that the range of Q of urban forest soil w as 0.85 ～1.51, the mean value w as 1.19 ±0.17, and the percentage of soil samples in the middle level of 1.0≤Q1.5 w as 90.91%.Soil fertili- ty Qin suburban forest and mixed forest of tree, shrub, and grass were comparatively high, w hile that in road green belt and law n w as just the opposite.It i