文献类型： 外文期刊
作者： Sun, Rui 1 ; Wu, Zhixiang 1 ; Lan, Guoyu 1 ; Yang, Chuan 1 ; Fraedrich, Klaus 3 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, 4 Xueyuan Rd, Haikou 571101, Hainan, Peoples R China
2.Minist Agr & Rural Affairs, Danzhou Invest & Expt Stn Trop Crops, Danzhou 571737, Peoples R China
3.Max Planck Inst Meteorol, D-20146 Hamburg, Germany
期刊名称：JOURNAL OF ENVIRONMENTAL QUALITY （ 影响因子：2.751； 五年影响因子：3.309 ）
ISSN： 0047-2425
年卷期：
页码：
收录情况： SCI
摘要： Recent and rapid expansion of rubber [Hevea brasiliensis (Willd. ex A. Juss.) Mull. Arg.] plantations requires understanding their effects on soil physicochemical properties and soil quality. An ideal testbed for analyzing such land-use change and its impacts is Hainan Island, the largest tropical island in China, which in recent decades has seen a dramatic expansion in the rubber industry. Based on 14 soil physicochemical properties at two soil depths (0-20 and 20-40 cm), a comprehensive assessment index was established using principal component analysis to assess soil qualities under rubber plantations (RPs; monoculture and intercropping) and five additional land-use types (areca palm [Areca L.], eucalyptus [Eucalyptus loxophleba Benth.] and banana [Musa L.] plantations, secondary forest, and tropical rainforest [TR]). The following results were obtained: (a) total porosity, ammoniacal N, total P, available P, and soil organic matter were vital soil physicochemical properties contributing to the comprehensive assessment index; (b) the comprehensive assessment indices of RPs were significantly lower than those of TR and areca palm plantation; (c) intercropping improves most soil physicochemical properties in RPs comparing monoculture and intercropped RPs; and (d) redundancy analysis demonstrated that land-use type interacted with climatic, geographical, and edaphic factors and collectively explained about half of the variation in the soil physicochemical properties across the study area. Deteriorating soil quality by converting TR to RPs and other land-use types provides another reason to protect TRs, especially on area-limited islands like Hainan.
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