Characterizing selected soil attributes of different land-use management to assess reforestation benefits of deforested riparian buffers  

作　　者：Velu Rasiah Singarayer K.Florentine 

机构地区：[1]Whispering Ridge Drive,Guelph,Ontario N1G 3Z4,Canada [2]Centre for Environmental Management,School of Health and Life Sciences,Federation University Australia,PO Box 663,Mount Helen,VIC 3350,Australia

出　　处：《Ecological Processes》2018年第1期467-478,共12页生态过程（英文）

基　　金：Financial support for this project was provided by the Corangamite Catchment Management Authority(Funding number CO0910.06.051).

摘　　要：Introduction:The information available on the sensitivity of soil biotic and abiotic attributes,which can be used to track the impact of reforestation in riparian buffers,is often insufficient to refine management practices and convince stakeholders of the benefits of reforestation.Methods:In this study,conducted in Victoria,Australia,the changes in soil biotic and abiotic attributes,organic carbon(OC),mineral nitrogen(MN),total dissolved solutes(TDS)and pH were characterised to assess the impact of land-use change from bare riparian(BR)to reforested riparian(RR).Additionally,the benefits of revegetating a deforested creek bank with regard to salinity abatement and C-sequestration potentials were assessed.Results:The TDS depletion in the RR strips varied spatiotemporally from 65 to 169 mg/L,the net OC deposition from 16 to 19 g C/kg soil and MN deposition from 1.2 to 2.1 g N/kg soil,respectively.Additionally,the net changes in pH from alkaline to near neutral condition varied by 0.4 to 1.0 pH units.Approximately 30%to 60%of the net OC depletion after deforestation was redeposited under RR over 3 to 6 years.The TDS depletion after land-use changed from BR to RR ranged from 15 to 32%over 3 to 6 years.Conclusion:The soil attributes OC,MN and TDS characteristics under different land-use practices varied spatiotemporally.This information may be useful to convince stakeholders to undertake reforestation of creek banks for salinity abatement,and that change in land-use has the potential to increase C sequestration at a farm scale.

关 键 词：Creek bank riparian DEFORESTATION REFORESTATION Soil biotic and abiotic attributes Site specificity Temporal changes Carbon sequestration Soil salinity 

分 类 号：S15[农业科学—土壤学]