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[1]DU Guo-ming,DU Lei,YANG Hou-xiang,et al.Study on the Spatiotemporal Distribution Characteristics of Farmland in the Northern Sanjiang Plain in Recent 55 Years[J].Research of Soil and Water Conservation,2013,20(01):156-159.

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Study on the Spatiotemporal Distribution Characteristics of Farmland in the Northern Sanjiang Plain in Recent 55 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 01 Page number: 156-159 Column: Public date: 2013-02-28

Title:: Study on the Spatiotemporal Distribution Characteristics of Farmland in the Northern Sanjiang Plain in Recent 55 Years

Author(s):: DU Guo-ming¹, DU Lei¹, YANG Hou-xiang¹, XUE Jian², ZHOU Yuan¹; 1. School of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China;
2. Land Consolidation and Rehabilitation Center, Ministry of Land and Resources, Beijing 100035, China

Keywords:: northern Sanjiang Plain; farmland; dynamic change; reclamation rate

CLC:: F301.2;S282

DOI:: -

Abstract:: 1:100 000 topographic maps of 1954, MSS images of 1976, TM images of 1996, CBERS images of 2009 and administrative maps were taken as the main data source, GIS spatial analysis method and mathematical statistical method were used to analyze the temporal and spatial changes of cultivated land in the northern Sanjiang Plain in order to summarize the historical characteristics of the ‘Great Northern Wilderness’ development. The results showed that cultivated land demonstrated a sustained and rapid upward trend in north of the Sanjiang Plain in recent 55 years, when these counties showing a ‘ladder type’ or ‘surge type’ growth. Now the reclamation rate has been at a relatively high level in all counties. Marsh, grassland, woodland were the main sources of cultivated land. The main reason for the loss of cultivated land included abandonment, ecological restoration and construction-occupied. The scale, sources, loss of the land reclamation presented obvious rhythmic and regional differences in northern counties of Sanjiang Plain. Land reclamation in the space presented different characteristics from west to east, from the distant water to the water (river), from the plains to the hills, which drove the center of cultivated land to migrate from southwest to northeast.

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