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[1]CHEN Jianlong,DI Chun,MA Longquan,et al.Research for the Characteristics of Spatial Differentiation of Cultivated Land Grades in Songnen Plain[J].Research of Soil and Water Conservation,2015,22(03):225-229.

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Research for the Characteristics of Spatial Differentiation of Cultivated Land Grades in Songnen Plain

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 03 Page number: 225-229 Column: Public date: 2015-06-28

Title:: Research for the Characteristics of Spatial Differentiation of Cultivated Land Grades in Songnen Plain

Author(s):: CHEN Jianlong¹, DI Chun¹, MA Longquan¹, DI Yanshun²; 1. Institute of Surveying and Planning on Land and Resources in Heilongjiang Province, Harbin 150090, China;
2. School of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China

Keywords:: cultivated land; grade; land assessment; spatial differentiation; Songnen Plain

CLC:: F301.21

DOI:: -

Abstract:: Understanding the characteristics of cultivated land grades and space differentiation of quality in Songnen Plain is of great importance for the scientific quality of cultivated land protection and construction. The characteristics of spatial differentiation of cultivated land grades in Songnen Plain were comprehensively analyzed using the national summary of farmland classification results of Heilongjiang Province and ArcGIS 9.3 spatial analysis functions. The results showed that the cultivated land grades ranged between 8 and 13, and the average grade was 10.8. Compared with the national average grade 9.8, it could be seen that the cultivated land quality overall was low. The high quality cultivated land accounted for only 8.62% of the total cultivated land area, the average land accounted for 70.88%, poor arable land accounted for 20.50%; the cultivated land showed the significant difference among all cities and countries, and the quality was better in eastern region like Harbin, Wuchang and Shuangcheng, the grades focused on 8 to 10; the low quality of cultivated land distributed in the northwest region like Nehe and Gannan, the grades focused on 11 to 13. On the whole, the cultivated grade presented the increase trend from the north to the south, and from the west to the east. The cultivated land construction measures should be adjusted according to local conditions in the future, and effective measures should be put forward according to the condition of different regions and existing problems. The research can provide the scientific and reasonable basis for spatial optimization of cultivated land, quality improvement, basic farmland demarcation and high standard farmland construction in Songnen Plain.

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