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Assessment of Soil Fertility of Continuous Plantation of Chinese Fir Based on Principal Component and Cluster Analysis
QIN Zuoyu,TANG Jian,CAO Jizhao,WANG Huili,DENG Xiaojun,PAN Bo
Forest and Grassland Resources Research . 2015, (5): 81 -87 .  DOI: 10.13466/j.cnki.lyzygl.2015.05.015