Chemical degradation of a Ferralsol (Oxisol) under intensive rubber (Hevea brasiliensis) farming in tropical China
文献类型: 外文期刊
第一作者: Zhang, Hua
作者: Zhang, Hua;Zhang, Gan-Lin;Zhao, Yu-Guo;Zhao, Wen-Jun;Qi, Zhi-Ping
作者机构:
关键词: ferralsols;oxisols;Hevea brasiliensis;sustainable management;soil quality;soil acidification;tropics
期刊名称:SOIL & TILLAGE RESEARCH ( 影响因子:5.374; 五年影响因子:6.368 )
ISSN: 0167-1987
年卷期: 2007 年 93 卷 1 期
页码:
收录情况: SCI
摘要: Impacts of intensive management practices on rubber (Hevea brasiliensis) farms (e.g., land clearance, fertilization, and rubber tapping) have not been adequately investigated. In this study, soil was taken from fields of grass (before rubber plantation), immature rubber (before tapping), and mature rubber (after tapping) at a tropical farm in Hainan, China. Soil organic matter, plant nutrients, cations, and soil pH were determined. Rubber cultivation resulted in significant decline of soil organic C and microbial biomass C. Available P was extremely low for all soils, resulting from the naturally low P content and the high sorption capacity of highly weathered Ferralsol. Furthermore, soil pH decreased by about 0.5 units, accompanied by an increase of exchangeable Al by more than one-fold. Regression analysis demonstrated that soil acidification was characterized by the depletion of base cations and release of Al. To maintain tropical soil quality, farming practices such as liming and organic amendment should be included in the best management practices of rubber farm. (c) 2006 Elsevier B.V. All rights reserved.
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