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[1]ZHANG Yu,WANG Tianwei,CAI Chongfa,et al.Characteristics of Arable Land Fragmentation and the Socioeconomic Drivers in the Arid Area[J].Research of Soil and Water Conservation,2016,23(04):179-184.

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Characteristics of Arable Land Fragmentation and the Socioeconomic Drivers in the Arid Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 179-184 Column: Public date: 2016-04-28

Title:: Characteristics of Arable Land Fragmentation and the Socioeconomic Drivers in the Arid Area

Author(s):: ZHANG Yu¹, WANG Tianwei¹, CAI Chongfa¹, LI Chaoxia¹, ZHAO Qing¹, TANG Xiaofei²; 1. College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China;
2. Hubei Institute of Surveying and Mapping Engineering, Wuhan 430074, China

Keywords:: arable land; landscape pattern index; socioeconomic factors; partial least squares (PLS) regression models

CLC:: F301.21

DOI:: -

Abstract:: In order to investigate the fragmentation and driving mechanism of arable land in the arid areas, the arable land patterns of Tekes County were analyzed based on the images in 1990, 1998, 2000, 2003, 2006 and 2011, using remote sensing and GIS. The driving forces of the change of arable land patterns were identified using the partial least squares regression models. The results showed that the arable land fragmentation was increasing during the study period with the increase of patch density (PD), and both the area-weighted mean patch fractal dimension (AWMPFD) and euclidian mean nearest neighbor distance (MNN) increased and then decreased before and after 2000. The change rates of MNN and AWMPFD were negative during the period from 1998 to 2000 and the period from 2006 to 2011, and positive during the other periods, while PD had the opposite change trend. The results of the regression models indicated that the main driving factors of arable land fragmentation included the total population, the total power of agricultural machinery, grain crop yields, oil-bearing crop yields, while the effects of the variables were different in the three models. Large amount of arable land was replaced by construction land due to the population growth and the rapid urbanization, resulting in the arable land fragmentation. The improvement of agricultural mechanization promoted the intensive use of arable land, which reduced the isolation of arable land patches to some extent.

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