Abstract
It is crucial to pay close attention to the ecological security in land consolidation and utilization of coastal tidal areas and make an appropriate zoning scheme to meet the characteristics of its particular landscape. Landscape security patterns can identify the patterns that are crucial to the health and security of landscape ecological processes by analyzing and simulation them. This article applies the theory of landscape security pattern to land consolidation zoning in a coastal tidal area, Dafeng District, Yancheng, Jiangsu Province. The main landscape processes in land consolidation are explored in land consolidation in the area by literature review and field investigation, corresponding single landscape ecological security patterns are constructed using spatial analysis functions in ArcGIS 10.3, and land consolidation zones are determined according to the comprehensive landscape security pattern. The results show that: (1) The processes of water-soil conservation, water source protection, biodiversity conservation, local culture protection, and recreation are the main landscape processes. The security patterns generated by key points and resistance elements could affect land consolidation; (2) The comprehensive landscape security pattern is composed of the multi-landscape security patterns, which are classified into three levels of high, medium, and low. The areas of the levels account for 20.12%, 46.23% and 33.65% of Dafeng District, respectively; (3) The specific suggestions of ecological protection and ecological restoration in land consolidation are put forward for land consolidation zones with different levels of landscape security patterns. These results suggest that zoning based on landscape security patterns can provide guidance for land consolidation and regulation in coastal tidal areas.
Highlights
Land consolidation is a comprehensive reallocation process in rural areas consisting of fragmented agricultural, forestry, or their part [1,2]
Five main landscape processes were explored in land consolidation in the Dafengcoefficient of landscape unit i
It is necessary to consider the influence of nature, ecology, social culture, and so on in confirming the sources and the resistance elements
Summary
Land consolidation is a comprehensive reallocation process in rural areas consisting of fragmented agricultural, forestry, or their part [1,2]. As the basic and premise of land reallocation [3], land consolidation is widely practiced in many countries around the world It speeds up land remediation and improves its efficiency [4] and increases agricultural productivity [5], creates sustainable rural areas [6,7] and alleviates poverty [8]. Based on the landscape ecological planning method advocated by Forman in 1995 [9], Kongjian Yu put forward the “landscape security pattern theory” in his doctoral thesis at Harvard University [10]. He believed there are some ecological security patterns, which are strategically important in biological conservation and landscape change [11]. Various landscape security patterns have been constructed and applied in spatial allocation optimization [12], ecological sources [13], scientific guidance on ecological protection and planning of urban agglomerations [14], city center planning [15], urban landscape planning [16], ecological restoration planning [17] and so on
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