RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2017, Vol. 26 >> Issue (01): 67-73.doi: 10.11870/cjlyzyyhj201701008

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EVALUATION OF FARMLAND FRAGMENTATION DUE TO THE IMPACT OF LAND CONSOLIDATION BASED ON THE VIEW OF LANDSCAPE PATTERN

LI Hong-yi, LI Shuang, LV Tian-gui, LIU Chun-ying   

  1. Department of Land Resource Management, School of Tourism and Urban Management, Jiangxi University of Finance and Economics, Nanchang 330013, China
  • Received:2016-05-16 Revised:2016-07-14 Online:2017-01-20
  • Supported by:
    National Science Foundation of China (41561049);Science and Technology Project Founded by the Jiangxi Provincial Education Department (GJJ150481);Planning of 13th "Five-Year" Project Founded by Jiangxi Academy of Social Science (16GL31)

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Abstract: Taking a land consolidation project of Yifeng County, Jiangxi Province as an example, we conducted quantitative evaluation on farmland fragmentation due to the impact of land consolidation based on the view of landscape pattern. We selected three types of landscape pattern indices, including patch-level indices, landscape-level indices, and characteristic indices of corridors. The results showed that the patch density of paddy field decreased from 8.9161 per hectare to 8.423 per hectare, the edge density of paddy field decreased from 1203.4318 to 1127.1347, and the area-weighted mean shape index of paddy field decreased from 1.2386 to 1.2163, the mean patch size increased from 0.0751 hectare to 0.0769 hectare and the largest patch index of paddy field increased from 0.17 percentage to 0.18 percentage. However, the drylands became fragmented, suggested by negative landscape pattern indices except the area-weighted mean shape index. Land consolidation led to fragmentation of the landscape pattern in the study area. The total number of patches increased from 3530 to 4175. The mean patch size increased from 0.0706 hectare to 0.0597 hectare. The area-weighted mean shape index of paddy fields decreased from 1.6723 to 1.8160. The largest patch index decreased from 2.06 percentages to 2.01 percentages. While characteristic indices of corridor improved, because of the land consolidation optimized the layout of rural roads and ditches, the construction of the corridor, such as rural roads and ditches, led to negative effects on the segmentation of landscape pitches. It is the principal cause of aggravation of fragmentation of landscape pattern. To effectively control the farmland fragmentation and improvement of the ecological benefit of land consolidation, the land consolidation planning should pay more attention on the consolidation of daylands, and the design of the layout of the corridors, such as rural roads and ditches.

Key words: land consolidation, farmland fragmentation, landscape pattern

CLC Number: 

  • F301.2
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