JOURNAL OF NATURAL RESOURCES ›› 2015, Vol. 30 ›› Issue (7): 1129-1140.doi: 10.11849/zrzyxb.2015.07.006

• Resource Evaluation • Previous Articles     Next Articles

Analyzing the Soil Quality Change Mechanism of the Cultivated Land Based on the Microscopic Perspective of the Household in the Metropolitan Suburban

LIU Hong-bin1,2, Lü Jie1   

  1. 1. College of Economics and Management, Shenyang Agricultural University, Shenyang 110866, China;
    2. College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
  • Received:2014-04-30 Revised:2014-06-02 Online:2015-07-20 Published:2015-07-14

Abstract:

Researching the mechanism of the soil quality change of cultivated land is the key to know the rules of the soil quality change and its effect. Combining the field sampling and laboratory data, and on the basis of statistical analysis and econometric models analysis, a case study of 238 households and the corresponding plot sampling data in Linhu Street, Wanggangpu Village and Yongle Village, Sujiatun District, Shenyang City was conducted. The results showed that the manner, degree and intensity of land use behavior have different levels of effects on the soil quality of cultivated land. In suburb, the labor input shows outstanding trend of non-farm, so the extensive and predatory use of cultivated land is relatively common, which leads to contend of available nitrogen, available phosphorus and available phosphorus in soil being decreased at the rate of 11.496 mg/kg, 44.078 mg/kg and 15.469 mg/kg. In the outer suburbs, the outstanding performance of the land use is plating economic crops. Because of the relatively high cost of employment opportunities, the income of farming is more than the expect of the household. the intensification of cultivated land, the degree of land-scale operation is higher in this area. Every unit increase of land investment intensity leads to the nitrogen, phosphorus and potassium content in soil increasing 0.007 mg/kg, 0.025 mg/kg and 0.037 mg/kg on average. In the middle of the two areas, the outstanding performance of the land use is increasing the land input and adjusting the planting structure. The land use change will lead to the increase of soil organic matter, nitrogen, phosphorus and potassium content at an average of 4.799 g/kg, 7.454 mg/kg, 100.170 mg/kg and 61.205 mg/kg. Based on the above findings, the government could regulate land use behavior by increasing comparative efficiency of agricultural production, stabilizing rural land contract relations and promoting appropriate scale operation of land to improve the soil quality of cultivated land.

Key words: the metropolitan suburban, the economic model, the soil quality of the cultivated land, household

CLC Number: 

  • F301.24