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[1]LI Shi-rong,LI Yong-gui,DUAN Shu-huai,et al.Study on Changes of Soil Physiochemical Property Under Converting Cropland to Forest in Datong of Qinghai Province[J].Research of Soil and Water Conservation,2009,16(02):132-137.

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Study on Changes of Soil Physiochemical Property Under Converting Cropland to Forest in Datong of Qinghai Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 02 Page number: 132-137 Column: Public date: 2009-04-20

Title:: Study on Changes of Soil Physiochemical Property Under Converting Cropland to Forest in Datong of Qinghai Province

Author(s):: LI Shi-rong¹, LI Yong-gui¹, DUAN Shu-huai¹, ZHOU Xin-cheng²; 1. Beijing Soil and Water Conservation Center, Beijing, 100038, China;
2. College of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China

Keywords:: converting cropland to forest; physiochemical property; changes

CLC:: S153

DOI:: -

Abstract:: The soil is very important for survival and development of biological and researching the change of soil physiochemical properties are significance for the process of ecological remediation.The study on the impacts of converting cropland to forest for physiochemical property of soil could provide scientific bases for the project development favorably.We collect the samples from the sections every ten centimeters from the top to the bottom in sample plot with the cutting ring and test the physical and chemical properties.The results showed that in the soil genetic horizon of 0-20 cm,with the age increasing of converting cropland to forest; the porosity,capillary porosity,and the minimum water-holding capacity took on the uniform trend of ‘S’ curve,and the organic content and carbon content showed‘V’ curve,the maximum occurred in the arable land and 18 a and 32 a natural forests of converting cropland to forest;the C/N took on down trend,indicating that the N was in under-supply in the converting cropland to forest.In addition,in the soil genetic horizon of 0-20 cm,the soil density is negatively related to the N content and C content,and positively related to clay content.However,in the 20-40 cm soil horizon,the soil density is significant positively to the content of N,C and clay particle.When the soil erosion occurred by the different exogenic forces,the soil damage degree increased with the soil horizon deepening.Due to the content of clay particle is positively correlated with the content of N and the content of C,so the decreasing of clay led to the attenuation and stability falling of N.

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