Cultivated land productivity potential improvement in land consolidation schemes in Shenyang,China: assessment and policy implications |
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| Institution: | 1. State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing, 100875, China;2. College of Resources Science and Technology, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China;1. Department of Environmental Engineering and Geodesy, University of Life Sciences, Lublin, 13 Akademicka Street, 20-950 Lublin, Poland;2. Department of Land Surveying, University of Agriculture in Krakow, Al. Mickiewicza 24-28, 30-059 Kraków, Poland;3. Institute of Geospatial Engineering and Real Estate, University of Warmia and Mazury in Olsztyn, Prawochenskiego Str. 15, room. 117, 10-720 Olsztyn, Poland;1. Department of Agricultural Resources and Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. School of Life and Environmental Sciences, The University of Sydney, NSW 2006, Australia;3. Department of Soil Science, University of Wisconsin - Madison, 1525 Observatory Drive, Madison, Wisconsin 53706, USA;4. Graduate School, Nanjing University of Information Science and Technology, Nanjing 210044, China;5. Agricultural Extension Service, Haining 314400, China;6. British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK;1. School of Geography and Planning, Center of Integrated Geographic Information Analysis, Sun Yat-Sen University, Guangzhou, China;2. Guangdong Provincial Key Laboratory of Land Use and Consolidation, South China Agricultural University, Guangzhou, China;3. Department of Geography, University of Cincinnati, Cincinnati, OH 45221-0131, USA;4. College of Agriculture and Animal Husbandry, Qinghai University, Xining, China;5. College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China;6. Guangzhou Surveying and Mapping Geographic Information Industry Engineering Technology Research Center, Guangzhou, China;1. Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;2. National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China;3. Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100097, China;4. Beijing Engineering Research Center of Agricultural Internet of Things, Beijing 100097, China |
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| Abstract: | Cultivated land productivity potential improvement (CLPPI) assessment is the fundamental basis to launch land consolidation, which is one of the most important way to increase the grain productive capacity. Previous studies on CLPPI assessment have focused on factors related to natural conditions of cultivated land, but they ignored the impacts of utilization conditions, including plot characteristics and agricultural infrastructure, which account for substantial CLPPI from land consolidation. Based on the crop-growth model and Agro-ecological Zoning (AEZ) methodology, this paper proposed a modified CLPPI assessment model to estimate the improvement of land productivity potential via land consolidation. Meanwhile, the contribute rates of different factors involved in determining the CLPPI were also analysed to reveal the ideal work focus and policy direction for land consolidation. Results showed that the calculated CLPPI values had obvious spatial variety in Shenyang, of which the average was 326.18. For the consolidation case, total crop production in Shenyang could be increased by as much as 149.89 × 107 kg, 20% of the current yield. CLPPI is the comprehensive outcome of both natural and utilization qualities of land use, and the current productivity potential of cultivated land in Shenyang relied much less on natural conditions such as soil than on utilization conditions such as agricultural infrastructure. In addition, medium-productivity lands were most appropriate target areas for the implication of land consolidation projects. Actually, the arrangement of land consolidation projects should not only consider CLPPI as in the past, but also add the theoretical productivity potential into consideration. Moreover, the realization of estimated CLPPI also calls for active changes of the whole land management system. An integrated institution for the full implementation of land consolidation, proper regulations and laws on the follow-up protection of cultivated land productivity potential, economic policies to stimulate the willingness of farmers, and a transfer mechanism for cultivated land are all needed policy changes. |
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| Keywords: | Cultivated land productivity potential improvement Land consolidation Assessment Policy implications Contribution rates Shenyang China |
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