Differences and Evaluation of Soil Anti-erodibility under Different Defarming Patterns in Typical Karst Region

doi:10.13466/j.cnki.lyzygl.2014.03.013

Abstract

Abstract: Soil structure and anti-erodibility under five vegetation restoration types including abandoned farmland(AF),Zanthoxylum bungeanum(ZB),Dodonaea viscosa(DV),Toona sinensis(TS)and Vernicia fordii(VF)were studied in Huajiang canyon demonstration area,Guizhou province with a farmland(CT) as control.The results showed that soil anti-erodibility was improved obviously compared with farmland.All the five de-farming land increased soil organic matter,aggregate reunion condition and reunion degree,while decreased dispersion rate.Aggregate structural damage rate decreased compared with farmland except Dodonaea viscosa.The anti-erodibility index was evaluated by fuzzy membership model,and the order of anti-erodibility with different vegetation restoration types was:TS>AF>VF>DV>ZB>CT.It is suggested that soil anti-erodibility and ecosystem function under restored vegetation is better than that under farmland,natural restoration without human disturbance could be the more adaptive type of vegetation and the better measure for soil erosion control in karst regions.

Key words: Karst region, returning farmland pattern, soil anti-erodibility, evaluation, fuzzy membership function

CLC Number:

S157.2

JIANG Liwei, TANG Fukai, CUI Ming, FANG Jianmei. Differences and Evaluation of Soil Anti-erodibility under Different Defarming Patterns in Typical Karst Region[J]. FOREST RESOURCES WANAGEMENT, 2014, (3): 56-61.

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