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[1]LIN Pei-song,GAO Quan-zhou.Study on Changes in Structural Properties of Purple Soils under Different Land Use[J].Research of Soil and Water Conservation,2010,17(04):134-138.

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Study on Changes in Structural Properties of Purple Soils under Different Land Use

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 04 Page number: 134-138 Column: Public date: 2010-08-20

Title:: Study on Changes in Structural Properties of Purple Soils under Different Land Use

Author(s):: LIN Pei-song^1,2, GAO Quan-zhou²; 1. Department of Geography, Jiaying University, Meizhou, Guangdong 514015, China;
2. School of Geography and Planning, Zhongshan University, Guangzhou 510275, China

Keywords:: land use; soil aggregate; soil structure property; purple soil; Northeast of Guangdong province

CLC:: F301.24;S152.4

DOI:: -

Abstract:: Using the research method of field investigation,soil sampling and laboratory analysis,the aggregate composition and structural properties of purple soils under different land use in Northeast Guangdong have been studied.The results show that: (1) Under the condition of dry sieve,purple soil aggregates in surface layer were dominated by >5mm particle size,>0.25mm aggregates were more than 91%.Under wet sieve,>0.25mm aggregates decreased obviously,and their mean value is 54.36%,the land use pattern has greater impact on water-stable aggregates.(2) >0.25mm water-stable aggregates in surface layer all changed in the following order: woodland>orchard land>tea plantation>abandoned field>dry farm land,and the water-stability of aggregates or content of water-stable aggregates was positively correlated with the contents of soil organic matter.The ratio of structure damage under different land use ranged from 31.12%～47.60%,and changed in the following order: dry farm land>abandoned field>tea plantation>orchard land>woodland.(3) The mean value of aggregates MWD was 2.26mm,and the aggregate MWD of all types of land,except dry farm land,decreased with depth.The total porosity ranged from 38.20%～45.28%,and non-capillary porosity is in surface layer in the following order: woodland>orchard land>tea plantation>abandoned field>dry farm land,with the similar changes in the deeper soil layer.

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