Use of High-Resolution Land Cover Maps to Support the Maintenance of the NWI Geospatial Dataset: A Case Study in a Coastal New Orleans Region

被引：0

作者：

Zou, Zhenhua ^{[1
]}

Huang, Chengquan ^{[1
]}

Lang, Megan W. ^{[2
]}

Du, Ling ^{[3
,4
]}

Mccarty, Greg ^{[4
]}

Ingebritsen, Jeffrey C. ^{[5
]}

Herold, Nate ^{[6
]}

Griffin, Rusty ^{[5
]}

Gong, Weishu ^{[1
]}

Lu, Jiaming ^{[1
]}

机构：

[1] Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA

[2] US Fish & Wildlife Serv, Natl Wetlands Inventory, Falls Church, VA 22041 USA

[3] Univ Maryland, Dept Environm Sci & Technol, College Pk, MD 20742 USA

[4] US Dept Agr, Agr Res Serv, Beltsville, MD 20705 USA

[5] US Fish & Wildlife Serv, Natl Wetlands Inventory, Madison, WI 53711 USA

[6] US Natl Ocean & Atmospher Adm, Charleston, SC 29405 USA

来源：

REMOTE SENSING | 2023年 / 15卷 / 16期

关键词：

NWI; maintenance; C-CAP; wetland loss; open water gain; water regime change; WETLAND CHANGE; BIODIVERSITY; URBANIZATION; PORTLAND; RIVER;

D O I：

10.3390/rs15164075

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The National Wetlands Inventory (NWI) is the most comprehensive wetland geospatial dataset in the United States. However, it can be time-consuming and costly to maintain. This study introduces automated algorithms and methods to support NWI maintenance. Through a wall-to-wall comparison between NWI and Coastal Change Analysis Program (C-CAP) datasets, a pixel-level difference product was generated at 1 m resolution. Building upon this, supplementary attributes describing wetland changes were incorporated into each NWI polygon. Additionally, new water polygons were extracted from C-CAP data, and regional statistics regarding wetland changes were computed for HUC12 watersheds. The 1 m difference product can indicate specific wetland change locations, such as wetland loss to impervious surfaces, the gain of open water bodies from uplands, and the conversion of drier vegetated wetlands to open water. The supplementary attributes can indicate the amount and percentage of wetland loss or water regime change for NWI polygons. Extracted new water polygons can serve as preliminary materials for generating NWI standard-compliant products, expediating NWI maintenance processes while reducing costs. Regional statistics of wetland change can help target watersheds with the most significant changes for maintenance, thereby reducing work areas. The approaches we present hold significant value in supporting NWI maintenance.

引用

页数：18