[1]GAI Zhaoxue,CHEN Xufei,DU Guoming.Spatiotemporal Pattern of Cultivated Land Fragmentation in Baiquan County of Black Soil Region[J].Research of Soil and Water Conservation,2022,29(02):355-361.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 02
Page number:
355-361
Column:
Public date:
2022-03-20
- Title:
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Spatiotemporal Pattern of Cultivated Land Fragmentation in Baiquan County of Black Soil Region
- Author(s):
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GAI Zhaoxue, CHEN Xufei, DU Guoming
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(School of Public Administration and Law, Northeast Agricultural University, Harbin 150030, China)
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- Keywords:
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cultivated land fragmentation; mobile window technology; spatiotemporal pattern
- CLC:
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F323.21
- DOI:
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- Abstract:
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In order to identify the types of cultivated land fragmentation and evaluate the degree of cultivated land fragmentation in Baiquan County of black soil region, based on the four periods of cultivated land use data in 2000, 2005, 2010 and 2015, this study quantitatively reflected the process of cultivated land fragmentation at pixel level through using moving window technology, revealed the basic features and spatiotemporal pattern of cultivated land fragmentation, and analyzed the change rules and characteristics of cultivated land fragmentation on the county and village scales. The results showed that:(1)the degree of cultivated land fragmentation in Baiquan County presented a ‘slowly sharply slowly' trend in 2000—2015, and this term was the rapid change period of cultivated land fragmentation;(2)in terms of spatial pattern, the cultivated land fragmentation in Baiquan County illustrated the characteristics of ‘hole cultivated land dominated and core cultivated land widely distributed'; since the rapid development of social and economy after 2010, the patch cultivated land had been increasing, and the problem of cultivated land fragmentation had become increasingly prominent;(3)at the township level, the degree of cultivated land fragmentation increased in the east and west regions in the period 2000—2005, and except the central region, the proportion of patch cultivated land increased steadily in the period 2010—2015, while the proportion of core cultivated land decreased and the degree of cultivated land fragmentation intensified;(4)at the village level, the degree of cultivated land fragmentation in each village in Baiquan County had large difference;(5)the causes of farmland fragmentation were mainly affected by the cutting forces of nature, utilization, facilities and management in Baiquan County. All in all, the combined effects of natural and cultural factors lead to the spatial and temporal differences of cultivated land fragmentation in the study area.