title: Study of landscape patterns of variation and optimization based on non-point source pollution control in an estuary.
abstract: Appropriate increases in the "sink" of a landscape can reduce the risk of non-point source pollution (NPSP) to the sea at relatively lower costs and at a higher efficiency. Based on high-resolution remote sensing image data taken between 2003 and 2008, we analyzed the "source" and "sink" landscape pattern variations of nitrogen and phosphorus pollutants in the Jiulongjiang estuary region. The contribution to the sea and distribution of each pollutant in the region was calculated using the LCI and mGLCI models. The results indicated that an increased amount of pollutants was contributed to the sea, and the "source" area of the nitrogen NPSP in the study area increased by 32.75 km(2). We also propose a landscape pattern optimization to reduce pollution in the Jiulongjiang estuary in 2008 through the conversion of cultivated land with slopes greater than 15° and paddy fields near rivers, and an increase in mangrove areas.
authors.affiliation: Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China. Electronic address: mengzhenj@gmail.com.
authors.forename: Mengzhen
authors.initials: M
authors.lastname: Jiang
authors.affiliation: Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China. Electronic address: rainman00.work@gmail.com.
authors.forename: Haiying
authors.initials: H
authors.lastname: Chen
authors.affiliation: Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
authors.forename: Qinghui
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Wu
mesh_terms: D002681:China; D004784:Environmental Monitoring / Q000379:methods; D063366:Estuaries; D008962:Models, Theoretical; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014877:Water Pollution, Chemical / Q000517:prevention & control*
chemical_list: D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen
keywords: High-resolution remote sensing image data; Non-point source pollution control; “Sink” landscape