Three major problems associated with our management of the world's ecosystems are already causing significant harm to some people, particularly the poor, and unless addressed will substantially diminish the long term benefits we obtain from ecosystems First, approximately 60 15 out of 24 of the ecosystem services examined during the Millennium Ecosystem Assessment are being degraded or used unsustainably, including fresh water, capture fisheries, air and water purification, and the regulation of regional and local climate, natural hazards, and pests. The full costs of the loss and degradation of these ecosystem services are difficult to measure, but the available evidence demonstrates that they are substantial and growing. Many ecosystem services have been degraded as a consequence of actions taken to increase the supply of other services, such as food. These trade offs often shift the costs of degradation from one group of people to another or defer costs to future generations. Second, there is established but incomplete evidence that changes being made in ecosystems are increasing the likelihood of nonlinear changes in ecosystems including accelerating, abrupt, and potentially irreversible changes that have important consequences for human well being. Dr. Anshumala Chandangar "Biophysical Foundations of Production and Consumption of Human Economy Sources and Sink Functions of the Ecosystem" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-6 , October 2021, URL: https://www.ijtsrd.com/papers/ijtsrd47663.pdf Paper URL : https://www.ijtsrd.com/economics/other/47663/biophysical-foundations-of-production-and-consumption-of-human-economy-sources-and-sink-functions-of-the-ecosystem/dr-anshumala-chandangar
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