نتایج جستجو برای: ecosystem

تعداد نتایج: 83322  

Journal: :international journal of environmental research 2012
y. x. feng g.p. luo c.f. li l. dai l. lu

this study aims to quantify the impacts of land use changes on ecosystem service value during large scale land development, and to provide key information for both economic development and policy makers for eco-environmental protection. the study area locates in manas river watershed which is a typical land development region in northwest china. landsat mss/tm/etm+ images in 1976, 1989, 1999 a...

Journal: :international journal of environmental research 0
y. x. feng xinjiang institute of ecology and geography, chinese academy of sciences, urumqi 830011, china g.p. luo xinjiang institute of ecology and geography, chinese academy of sciences, urumqi 830011, china c.f. li xinjiang institute of ecology and geography, chinese academy of sciences, urumqi 830011, china l. dai xinjiang institute of ecology and geography, chinese academy of sciences, urumqi 830011, china e. chianese department of environmental science, university “parthenope” of naples, centro direzionale isola c4, 80143 napoli, italy

this study aims to quantify the impacts of land use changes on ecosystem service value during large scale land development, and to provide key information for both economic development and policy makers for eco-environmental protection. the study area locates in manas river watershed which is a typical land development region in northwest china. landsat mss/tm/etm+ images in 1976, 1989, 1999 an...

Journal: :Environmental science & technology 2012
Yihe Lü Shuguang Liu Bojie Fu

E service is the collective name for the benefits that people obtain from ecosystems. As a scientific concept, it can be dated back to the 1960s; whereas, the proliferation of ecosystem service research has been since the late 1990s driving by the increasing environmental concerns of human societies. Ecosystem service has been defined from an anthropocentric perspective that links ecosystems an...

2006
Stephen R. Carpenter Elena M. Bennett Garry D. Peterson

The Millennium Ecosystem Assessment (MA) scenarios address changes in ecosystem services and their implications for human well-being. Ecological changes pose special challenges for longterm thinking, because of the possibility of regime shifts that occur rapidly yet alter the availability of ecosystem services for generations. Moreover, ecological feedbacks can intensify human modification of e...

2011
Ilung Pranata Geoff Skinner Rukshan Athauda

This paper firstly introduces the newly emerged collaborative technology termed as Digital Ecosystem. The concept of Digital Ecosystem and the existing research in this area are discussed in detail. Next, the paper outlines several issues that need to be solved for a successful implementation of Digital Ecosystem environment. As the main focus of this paper is in the security area, we have iden...

2017
N. Small M. Munday I. Durance

Since the Millennium Ecosystem Assessment, ecosystem service science has made much progress in framing core concepts and approaches, but there is still debate around the notion of cultural services, and a growing consensus that ecosystem use and ecosystem service use should be clearly differentiated. Part of the debate resides in the fact that the most significant sources of conflict around nat...

2013
Jianguo Liu

Population sizes and growth rates are two major factors used by ecologists in assessing human impacts on ecosystems and landscapes. However, the numbers of households have been increasing much faster than population sizes. As households are basic socioeconomic units (e.g., in consumption of ecosystem services) and key components of coupled human and natural systems, household proliferation has ...

2014
Claudia Stein Lauren M. Hallett W. Stanley Harpole Katharine N. Suding

The concept of ecosystem services--the benefits that nature provides to human's society--has gained increasing attention over the past decade. Increasing global abiotic and biotic change, including species invasions, is threatening the secure delivery of these ecosystem services. Efficient evaluation methods of ecosystem services are urgently needed to improve our ability to determine managemen...

2017
Lucie M Bland Tracey J Regan Minh Ngoc Dinh Renata Ferrari David A Keith Rebecca Lester David Mouillot Nicholas J Murray Hoang Anh Nguyen Emily Nicholson

Effective ecosystem risk assessment relies on a conceptual understanding of ecosystem dynamics and the synthesis of multiple lines of evidence. Risk assessment protocols and ecosystem models integrate limited observational data with threat scenarios, making them valuable tools for monitoring ecosystem status and diagnosing key mechanisms of decline to be addressed by management. We applied the ...

Purpose: The purpose of this paper was to validate a model for using the entrepreneurial ecosystem in e-banking. Method: This study was a cross-sectional survey in terms of method and time of data collection. The statistical population included managers and experts of the country's electronic banking system. The sample size was 384 people and sampling was done by simple random method. Structur...

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