title: Landscape ecological security response to land use change in the tidal flat reclamation zone, China.
abstract: As coastal development becomes a national strategy in Eastern China, land use and landscape patterns have been affected by reclamation projects. In this study, taking Rudong County, China as a typical area, we analyzed land use change and its landscape ecological security responses in the tidal flat reclamation zone. The results show that land use change in the tidal flat reclamation zone is characterized by the replacement of natural tidal flat with agricultural and construction land, which has also led to a big change in landscape patterns. We built a landscape ecological security evaluation system, which consists of landscape interference degree and landscape fragile degree, and then calculated the landscape ecological security change in the tidal flat reclamation zone from 1990 to 2008 to depict the life cycle in tidal flat reclamation. Landscape ecological security exhibited a W-shaped periodicity, including the juvenile stage, growth stage, and maturation stage. Life-cycle analysis demonstrates that 37 years is required for the land use system to transform from a natural ecosystem to an artificial ecosystem in the tidal flat reclamation zone.
authors.affiliation: Graduate School of Engineering, Kyoto University, Kyoto, 6158540, Japan.|School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China.
authors.forename: Runsen
authors.initials: R
authors.lastname: Zhang
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China. ljpu@nju.edu.cn.|The Key Laboratory of the Coastal Zone Exploitation and Protection, Ministry of Land and Resources, Nanjing, 210023, China. ljpu@nju.edu.cn.
authors.forename: Lijie
authors.initials: L
authors.lastname: Pu
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Xu
mesh_terms: D000383:Agriculture / Q000379:methods / Q000706:statistics & numerical data; D002681:China; D003247:Conservation of Natural Resources / Q000379:methods*; D004463:Ecology; D017753:Ecosystem; D004784:Environmental Monitoring; D063366:Estuaries; D006801:Humans
keywords: Land use change; Landscape ecological security; Periodic feature; Reclamation; Rudong County