干旱区生态环境知识资源中心(Arid): National Wetland Map 5: An improved spatial extent and representation of inland aquatic and estuarine ecosystems in South Africa

Arid

DOI	10.17159/wsa/2020.v46.i1.7887
	National Wetland Map 5: An improved spatial extent and representation of inland aquatic and estuarine ecosystems in South Africa
	van Deventer, Heidi 1,2; van Niekerk, Lara 3,4; Adams, Janine 5; Dinala, Millicent Ketelo 6; Gangat, Ridhwannah 2; Lamberth, Stephen J.4,7,8; Lotter, Mervyn 9; Mbona, Namhla 6; MacKay, Fiona 10,11; Nel, Jeanne L.12,13; Ramjukadh, Carla-Louise 3; Skowno, Andrew 6,14; Weerts, Steven P.15,16,17
通讯作者	van Deventer, Heidi
来源期刊	WATER SA
ISSN	0378-4738
EISSN	1816-7950
出版年	2020
卷号	46 期号:1 页码:66-79
英文摘要	The improved representation of freshwater and estuarine ecosystems and associated data was a key component of the 2018 National Biodiversity Assessment, and is an essential step in enhancing defensible land use planning and decision making. This paper reports on the enhancement of the National Wetland Map (NWM) version 5 for South Africa and other data layers associated with the South African Inventory of Inland Aquatic Ecosystems. Detail is provided on (i) the extent of wetlands mapped in NWM5, compared to previous versions of the NWMs; (ii) the improved extent of inland wetlands mapped in focus areas in NWM5 relative to NWM4; (iii) the type of cover associated with the wetlands (inundated, vegetated or arid); (iv) the ecotone between rivers and estuaries; and (v) level of confidence for the inland wetlands in terms of how well the extent and hydrogeomorphic units were captured for each sub-quaternary catchment of South Africa. A total of 4 596 509 Ira (3.8% of South Africa) of inland aquatic ecosystems and artificial wetlands have now been mapped, with NWM5 delineating 23% more inland wetlands (2 650 509 ha or 2.2% of SA) compared with NWM4. The estuarine functional zone, which encapsulates all estuarine processes, and associated habitats and biota, was refined for 290 systems totalling 200 739 ha, with the addition of 42 micro-estuaries totalling 340 ha, Nearly 600 000 ha (0.5% of SA) of artificial wetlands were mapped in SA. Inland wetlands are predominantly palustrine (55%), with some arid (34%) and a few inundated systems (11%). Ecotones between rivers arid estuaries, ecotones where biota and processes continuously vary from freshwater to estuarine, formed a small fraction (<1.5%) of river total extent (164 018 km). Most inland wetlands (similar to 70%) had a low confidence ranking for designation of extent and typing, because they were not mapped by a wetland specialist and not verified in the field. Future improvements of the map should be focused on catchment-based improvements, particularly in strategic water-source areas, areas of high development pressure and those with low confidence designation.
英文关键词	wetland inventory National Wetland Map inland aquatic ecosystems estuarine functional zone macro estuaries micro estuaries National Biodiversity Assessment Sustainable Development Goal (SDG) reporting Ramsar
类型	Article
语种	英语
国家	South Africa ; Netherlands
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000513899700008
WOS关键词	CONSERVATION ; DELINEATION ; CLASSIFICATION ; MANAGEMENT ; AREAS ; LAKES
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315743
作者单位	1.CSIR, POB 395, ZA-0001 Pretoria, South Africa; 2.Univ Witwatersrand WITS, Sch Geog Archaeol & Environm Studies, Private Bag 3, ZA-2050 Johannesburg, South Africa; 3.CSIR, ZA-7600 Stellenbosch, South Africa; 4.Nelson Mandela Univ, Inst Coastal & Marine Res CMR, Private Bag X6531, ZA-6530 Port Elizabeth, South Africa; 5.Nelson Mandela Univ, Dept Bot, POB 77000, ZA-6031 Port Elizabeth, South Africa; 6.South African Natl Biodivers Inst, Private Bag X101, ZA-0001 Pretoria, South Africa; 7.Dept Environm Affairs Fisheries Res & Dev, Private Bag X2, ZA-8018 Cape Town, South Africa; 8.South African Inst Aquat Biodivers, Private Bag 1015, ZA-6140 Grahamstown, South Africa; 9.MTPA, Private Bag X1088, ZA-1120 Lydenburg, South Africa; 10.South African Assoc Marine Biol Res, Oceanog Res Inst, POB 10712, ZA-4056 Durban, South Africa; 11.Univ KwaZulu Natal, Sch Life Sci, ZA-3630 Durban, South Africa; 12.Wageningen Environm Res, Postbus 47, NL-6700 AA Wageningen, Netherlands; 13.Nelson Mandela Univ, Sustainabil Res Unit, Private Bag X6531, ZA-6530 George, South Africa; 14.Univ Cape Town, Dept Biol Sci, Private Bag X3, Rondebosch, South Africa; 15.CSIR, 359 King George V 5th Ave, ZA-400 Durban, South Africa; 16.Univ Zululand, Dept Zool, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa; 17.Univ Zululand, CRUZ, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa
推荐引用方式 GB/T 7714	van Deventer, Heidi,van Niekerk, Lara,Adams, Janine,et al. National Wetland Map 5: An improved spatial extent and representation of inland aquatic and estuarine ecosystems in South Africa[J],2020,46(1):66-79.
APA	van Deventer, Heidi.,van Niekerk, Lara.,Adams, Janine.,Dinala, Millicent Ketelo.,Gangat, Ridhwannah.,...&Weerts, Steven P..(2020).National Wetland Map 5: An improved spatial extent and representation of inland aquatic and estuarine ecosystems in South Africa.WATER SA,46(1),66-79.
MLA	van Deventer, Heidi,et al."National Wetland Map 5: An improved spatial extent and representation of inland aquatic and estuarine ecosystems in South Africa".WATER SA 46.1(2020):66-79.