Understanding the environment

Tolba, Mostafa K.; El-Kholy, Osama A.

doi:10.1007/978-94-011-2280-1_20

Cited by 9 publications

(10 citation statements)

References 48 publications

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“…Nature supplies food and recreation that human beings rely on. Unfortunately, ecosystems worldwide are threatened by anthropological activities and climate change [ 1 ]. Under such pressures, maintaining a healthy ecosystem is essential for supplying stable and sustainable goods and services for human societies [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Remote Sensing of Ecosystem Health: Opportunities, Challenges, and Future Perspectives

Guo

2014

Sensors

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Maintaining a healthy ecosystem is essential for maximizing sustainable ecological services of the best quality to human beings. Ecological and conservation research has provided a strong scientific background on identifying ecological health indicators and correspondingly making effective conservation plans. At the same time, ecologists have asserted a strong need for spatially explicit and temporally effective ecosystem health assessments based on remote sensing data. Currently, remote sensing of ecosystem health is only based on one ecosystem attribute: vigor, organization, or resilience. However, an effective ecosystem health assessment should be a comprehensive and dynamic measurement of the three attributes. This paper reviews opportunities of remote sensing, including optical, radar, and LiDAR, for directly estimating indicators of the three ecosystem attributes, discusses the main challenges to develop a remote sensing-based spatially-explicit comprehensive ecosystem health system, and provides some future perspectives. The main challenges to develop a remote sensing-based spatially-explicit comprehensive ecosystem health system are: (1) scale issue; (2) transportability issue; (3) data availability; and (4) uncertainties in health indicators estimated from remote sensing data. However, the Radarsat-2 constellation, upcoming new optical sensors on Worldview-3 and Sentinel-2 satellites, and improved technologies for the acquisition and processing of hyperspectral, multi-angle optical, radar, and LiDAR data and multi-sensoral data fusion may partly address the current challenges.

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Section: Introductionmentioning

confidence: 99%

Remote Sensing of Ecosystem Health: Opportunities, Challenges, and Future Perspectives

Guo

2014

Sensors

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“…However, these efforts fell short of protecting urban ecosystems and the environment, as Carson (1962) proved. Attempting to assess progress in protecting the environment, Tolba and El-Kholy (1992) concluded that issues and problems discussed in the Environment and Humanity Conference 9 are the same and have gone worse.…”

Section: Impacts Of Urbanization On the Environmentmentioning

confidence: 99%

Bring Nature Back to the City; Keep Invasive Species Out

El-Kholei

Abido

2022

Journal of Urban Research

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Cities are the drivers of economic growth but pollute the environment and deplete natural resources. Nature-based Solutions (NbS) and Ecosystem-based Adaptation (EbA) offer many answers to mitigate and adapt to climate change. Without understanding the threats associated with these solutions, bringing nature back to the city might cause undesired side effects such as introducing and proliferating invasive species. Contemporary literature on invasive species evolves from the urban ecology discipline. The paper explores contemporary literature to highlight the gap between ecologists and design professionals. We found that research published between 2017-2021 and indexed on Scopus that dealt with urban issues and invasive species yielded 4,556 publications, of which only 88 publications that design professionals prepared to indicate a gap between urban ecologists and design professionals explaining the persistence of the problem and concerns that ecologists raise. We conducted a bibliometric analysis. Results indicate three clusters: (1) Pressures such as climate change; (2) State urban ecosystems; and (3) Responses in the form of land use plans and urban designs. NbS and EbA are instrumental in responding to climate change. Planners must design and build cities to minimize the adverse effects of urbanization while maximizing the ecological processes by allowing nature conservation actions within urban environments. One of the criteria for evaluating design and planning alternatives is to check for the risk of introducing invasive species. Design experts must be aware of the risks of invasive species, which require research to update present guidelines and introduce the topic in the architectural and planning curricula.

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“…Although Malthus's analysis was, Gray and is still, heavily criticised (Boserup, 1965), anxiety about over population has become acute (Ehrlich, 1975;Meadows, 1972;Camp, 1993) as world population has rapidly expanded since 1945. Total world population currently stands at around 5.7 billion, and is expected to rise to about 10 billion by the year 2050 (Tolba, 1992). Serious doubts exist about the capacity of the Earth to feed such an ever expanding population.…”

Section: The Population Problemmentioning

confidence: 99%

An International Environmental Regime for Population?: From Bucharest to Cairo

Dodgson¹,

Gray²

1996

Politics

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The problem of over population has been the subject of much debate since Malthus's ‘Essay on the Principle of Population’ in 1798. This debate has taken on a new sense of urgency, however, during the last 25 years, as the global implications of rapid population growth have became apparent. Attempts by the international community to establish a regime to deal with the problem have led to the convening of three conferences, Bucharest (1974), Mexico City (1984) and Cairo (1994) But despite propitious signs of consensus during the run up periods to each of these conferences, no international regime has been created This article examines the reasons for both the initial consensus and the eventual dissensus in each case, and concludes that several pre‐conditions must be met if a regime is to be established in the future.

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Understanding the environment

Cited by 9 publications

References 48 publications

Remote Sensing of Ecosystem Health: Opportunities, Challenges, and Future Perspectives

Remote Sensing of Ecosystem Health: Opportunities, Challenges, and Future Perspectives

Bring Nature Back to the City; Keep Invasive Species Out

An International Environmental Regime for Population?: From Bucharest to Cairo

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