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Land-cover effects on red soil rehabilitation in China: a meta-analysis

Stake Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China

Liding Chen

Stake Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China, liding{at}rcees.ac.cn

Bojie Fu

Stake Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China

To reverse the soil degradation problems resulting from overexploitation, ecological soil rehabilitation has already been an important pursuit in ecological and environmental research and applications. Based on journal publications and a meta-analysis approach, this paper investigates the effects, and their spatiotemporal variations, of different land covers on red soil rehabilitation in China. Results indicate that all the land covers used in red soil rehabilitation had been effective in improving degraded red soils but the degrees of effectiveness varied. Soil organic carbon was the most sensitive of the three major soil nutrients considered with regard to land-cover change during ecological rehabilitation. Coniferous and broadleaf mixed forest was detected as the most effective land cover in red soil rehabilitation. Some spatiotemporal trends of land-cover effectiveness on red soil rehabilitation exist in a statistically significant sense. These findings are important for land use and ecological rehabilitation decision-making such as the selection of a soil rehabilitation pathway and the determination of priority areas for ecological rehabilitation.

Key Words: ecological rehabilitation • land cover • meta-analysis • non-linearity • soil quality • spatiotemporal differentiation.

Progress in Physical Geography, Vol. 32, No. 5, 491-502 (2008)
DOI: 10.1177/0309133308098942


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