Your search found 5 records
1 Gopal, B. 2016. A conceptual framework for environmental flows assessment based on ecosystem services and their economic valuation. Ecosystem Services, 21(Part A):53-58. [doi: https://doi.org/10.1016/j.ecoser.2016.07.013]
Environmental flows ; Ecosystem services ; Economic value ; Ecosystem approaches ; Assessment ; Rivers ; Stream flow ; Rehabilitation ; Water quality ; Living standards ; Social aspects ; Ecological indicators ; Cultural factors
(Location: IWMI HQ Call no: e-copy only Record No: H048052)
(0.70 MB)
In recent decades, environmental flows has emerged a major instrument for sustaining and/or rehabilitating the ecosystem functions and services of rivers worldwide. The holistic methodologies of assessment of environmental flows (=EFlows) take into account the physical, biological, water quality and socio-cultural as well as livelihood aspects of riverine ecosystems, and increasingly depend upon consultations with experts and local communities to make a negotiated socio-political decision by consensus within the society. This paper presents a conceptual framework for the assessment of EFlows on the basis of a change in total ecosystem services and their total economic value with the alteration of flow regimes. Such an assessment would consider the gain and loss of ecosystem services both upstream and downstream of the point of intervention which alters the flow regime. It is also proposed that the economic valuation should provide for appropriate weightages to ecosystem services with a strong social, cultural and livelihood bearing in regional/local context. It is further argued that a top-down approach to E-Flows assessment should be followed wherever possible to convince the policy makers.
2 United Nations Environment Programme (UNEP). 2017. A framework for freshwater ecosystem management. Vol. 2. Technical guide for classification and target-setting. Nairobi, Kenya: United Nations Environment Programme (UNEP). 72p.
Freshwater ; Ecosystem management ; Frameworks ; Guidelines ; Sustainable Development Goals ; Ecosystem services ; Groundwater ; Water quality ; River basins ; Lakes ; Wetlands ; Coastal area ; Estuaries ; Biological indicators ; Ecological indicators ; Chemicophysical properties ; Monitoring ; Assessment
(Location: IWMI HQ Call no: e-copy only Record No: H048537)
http://wedocs.unep.org/bitstream/handle/20.500.11822/22242/Framework_Freshwater_Ecosystem_Mgt_vol2.pdf?sequence=1&isAllowed=y
https://vlibrary.iwmi.org/pdf/H048537.pdf
https://vlibrary.iwmi.org/pdf/H048537.pdf
(3.34 MB) (3.34 MB)
3 Wu, J.; Wang, X.; Zhong, B.; Yang, A.; Jue, K.; Wu, J.; Zhang, L.; Xu, W.; Wu, S.; Zhang, N.; Liu, Q. 2020. Ecological environment assessment for greater Mekong Subregion based on pressure-state-response framework by remote sensing. Ecological Indicators, 117:106521. (Online first) [doi: https://doi.org/10.1016/j.ecolind.2020.106521]
Environmental Impact Assessment ; Ecological indicators ; Remote sensing ; Landsat ; Biodiversity ; Vegetation ; Land use ; Land cover ; Spatial distribution ; Farmland ; Ecosystems ; Anthropogenic factors ; Evapotranspiration ; Sustainable development / China / Myanmar / Lao People's Democratic Republic / Greater Mekong Subregion / Yunnan / Sipsongpanna
(Location: IWMI HQ Call no: e-copy only Record No: H049753)
(6.71 MB)
The environment project in the greater Mekong sub-region was the largest multi-field environmental cooperation launched by six countries (China, Vietnam, Laos, Myanmar, Thailand and Cambodia) in 2006, since the cooperation mechanism was established by Asian Development Bank (ADB) in 1992. How to establish the indicators to assess the achievements of the biological corridor construction and the status of ecological environment quantitatively is one of the prerequisites for the future project ongoing phase. The popular Pressure-State-Response (PSR) framework was employed in this study to assess the natural and human pressure, the healthy state of regional natural environment, and the subsequent response of ecosystem dynamic change in the Greater Mekong Subregion. Instead of using surveying based data as driving parameters, large amount of driving factors were retrieved from multi-source remote sensing data from 2000 to 2017, which provides access to larger updated and real-time databases, more tangible data allowing more objective goal management, and better spatially covered. The driving factors for pressure analysis included digital elevation, land surface temperature, evapotranspiration, light index, road network map, land cover dynamic change and land use degree, which were derived directly and indirectly from remote sensing. The indicators for state evaluation were composed of vegetation index, leaf area index, and fractional vegetation cover from remote sensing directly. The comprehensive response index was mainly determined by the pressure and state indicators. Through the analysis based on an overlay technique, it showed that the ecological environment deteriorated firstly from 2000 to 2010 and then started to improve from 2010 to 2017. The proofs indicated that the natural forest and wetland ecosystems were improved and the farmland area was decreased between 2000 and 2017. This study explored effective indicators from remote sensing for the ecological and environmental assessment, which can provide a strong decision-making basis for promoting the sustainable development of the ecological environment in the greater Mekong subregion, as well as the technological support for the construction of the biodiversity corridor.
4 Yang, Z.; Bai, J.; Zhang, W. 2021. Mapping and assessment of wetland conditions by using remote sensing images and POI data. Ecological Indicators, 127:107485. (Online first) [doi: https://doi.org/10.1016/j.ecolind.2021.107485]
Wetlands ; Mapping ; Assessment ; Remote sensing ; Water resources ; Water quality ; Vegetation ; Ecological indicators ; Landsat / China / Suzhou
(Location: IWMI HQ Call no: e-copy only Record No: H050366)
https://www.sciencedirect.com/science/article/pii/S1470160X21001503/pdfft?md5=57aabe38ec6376b9d2daeb9e7191bd00&pid=1-s2.0-S1470160X21001503-main.pdf
https://vlibrary.iwmi.org/pdf/H050366.pdf
https://vlibrary.iwmi.org/pdf/H050366.pdf
(9.82 MB) (9.82 MB)
Wetlands are one of the most valuable natural resources on earth and play an important role in preserving biodiversity. However, due to economic development and human disturbances, many wetlands across the world have deteriorated and disappeared over the past several decades. By using remote sensing images and point of interest (POI) data, we proposed a knowledge-based raster mapping (KBRM)-based framework and implemented it in the assessment of wetland ecological conditions in Suzhou, China. Density maps of waterbodies, vegetation covers, imperviousness, roads, and POI values were derived and used as five ecological indicators that can represent the ecological conditions of wetlands. The KBRM approach was used to integrate these indicators into an overall rating and map wetland ecological conditions efficiently. Thus, spatial variations in wetland ecological conditions can be distinguished and represented in detail. Cross validation was conducted with water quality data at 15 field sampling sites. The validation results demonstrated that the overall wetland condition scores generated by our approach and the water quality index (WQI) values calculated from water quality data were strongly correlated. These findings confirm that our framework could be used to effectively map and evaluate spatial variations in wetland ecological conditions and provide more support for policy-making in wetland protection and management
5 Sowinska-Swierkosz, B.; Wojcik-Madej, J.; Michalik-Sniezek, M. 2021. An assessment of the Ecological Landscape Quality (ELQ) of Nature-Based Solutions (NBS) based on existing elements of Green and Blue Infrastructure (GBI). Sustainability, 13(21):11674. (Special Issue: Evaluation of Sustainable Ecological Landscape Quality) [doi: https://doi.org/10.3390/su132111674]
Ecological indicators ; Landscape ; Assessment ; Infrastructure ; Sustainable Development Goals ; Biodiversity ; Remote sensing ; Land cover ; Ecosystem services ; Anthropogenic factors / Poland / Lublin
(Location: IWMI HQ Call no: e-copy only Record No: H050707)
(1.63 MB) (1.63 MB)
Nature-based solutions (NBS) positively impact ecological landscape quality (ELQ) by providing multiple benefits, including enhancing natural capital, promoting biodiversity, mitigating water runoff, increasing water retention, and contributing to climate change adaptations and carbon sequestration. To analyze the specific contribution of different NBS types, this study assessed 14 ELQ indicators based on the application of spatial data. Five NBS based on existing elements of green and blue infrastructure (GBI) were analyzed at the city level (Lublin, Poland), including parks (UPs), forests (UFs), water bodies (UWs), allotment gardens (AGs), and woods (Ws). The analysis revealed that different NBS contribute in contrasting ways to the improvement of various dimensions of ELQ. UFs made the biggest contribution to the maintenance of ecological processes and stability, as well as to aesthetic values. Ws together with AGs were crucial to maintaining a high level of diversity at the landscape scale and also contributed to preserving the ecological structure. UWs and UPs had no outstanding impact on ELQ, mainly due to their high level of anthropogenic transformation. The application of spatial indicators proved useful in providing approximate information on the ecological values of different types of NBS when other data types were either unavailable or were only available at a high cost and with considerable time and effort
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