[1]TAI Xiaoli,XIAO Wu,ZHANG Jianyong,et al.Research of Cultivated Land Fragmentation at the Township Level of Chaohu Basin Based on Landscape Metrics[J].Research of Soil and Water Conservation,2016,23(04):94-98.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 04
Page number:
94-98
Column:
Public date:
2016-04-28
- Title:
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Research of Cultivated Land Fragmentation at the Township Level of Chaohu Basin Based on Landscape Metrics
- Author(s):
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TAI Xiaoli, XIAO Wu, ZHANG Jianyong, LYU Xuejiao, DING Qing
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Institute of Land Reclamation and Ecological Restoration, China University of Mining and Technology, Bingjing 100083, China
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- Keywords:
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Gaofen-1; landscape index; cultivated land fragmentation; principal component analysis; land regulation
- CLC:
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F301.24
- DOI:
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- Abstract:
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Selecting 14 counties of Chaohu Basin as the research object, based on high spatial resolution image of 2015, we extracted the Chaohu Lake Basin spatial distribution data of cultivated land, in the perspective of landscape pattern, we built farmland fragmentation measurement index system based on 6 landscape indexes, and had carried out the principal component analysis, formed two principal component (F1, F2) of farmland fragmentation integrated measurement model, in order to provide the theoretical basis and feasible suggestions for the land regulation in Chaohu Basin. The results showed that selected 6 indexes included area, shape, distribution and other factors of cultivated land fragmentation, it was the measurement system of an important indicator of the Chaohu Lake Basin land fragmentation; the cumulative contribution rate of the first two principal components is 96.969%, so they can express most of the information of the 6 original landscape indexes, the first principal component is the comprehensive index about area and distribution, the second is the comprehensive index about shape; the cultivated land fragmentation spatial difference of Chaohu Basin is great, eastern fragmentation is minimum, we can promote the development of agricultural scale, the four counties of west and south are medium, and mainly related to the original topographic relief. We can reduce fragmentation according to leveling land and mergering scattered patch, the three counties of north can reduce land fragmentation through land shape regulation, the fragmentation of the four districts of Hefei is serious, and related to cities’ occupation to farmland. We should consider the relationship between city extension and farmland protection during the development of city.