Purpose Chinese fir (Cunninghamia lanceolata (Lamb.) dation occurred in the continuous cropping CFPs examined in Hook) is an important native tree species in China. this study, with soil acidification and phosphorus deficiency Consecutive cropping traditionally occurs in Chinese fir plan- being two primary problems observed. tations (CFPs), but this practice has resulted in productivity . . declines in subsequent rotations. This study was designed to Keywords Chinese fir plantations Continuous cropping . . . better understand the change of soil properties in the continu- Nutrients Organic matter pH Rhizosphere ous cropping CFPs. Materials and methods We investigated soil pH, soil organic matter (SOM), and nutrient contents in different soil layers 1 Introduction and in rhizosphere soil (RS) and non-rhizosphere soil (NRS) under CFPs of different ages and in different rotations. Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is an Results and discussion In the upper (0–20 cm) soil layer, soil indigenous tree species in South China. Due to desirable fea- pH decreased, while SOM increased, beneath mature CFPs tures such as fast growth, pest and disease-resistance, and with consecutive rotations. Total nitrogen (TN), available po- good timber quality, it is historically one of the most important tassium, and available phosphorus
Journal of Soils and Sediments – Springer Journals
Published: Jun 9, 2016
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