Japan Geoscience Union Meeting 2018

Presentation information

[EE] Oral

H (Human Geosciences) » H-CG Complex & General

[H-CG22] Global Land Programme and Regional/Global Sustainability

Sun. May 20, 2018 10:45 AM - 12:15 PM 102 (1F International Conference Hall, Makuhari Messe)

convener:Yukio Himiyama(Emeritus Professor, Hokkaido University of Education), Shigeko Haruyama(Department of Environmental Science, Graduate School of Bioresouces,Mie University), Qinxue Wang(国立研究開発法人 国立環境研究所), Chairperson:Kondoh Akihiko(Center for Environmental Remote Sensing, Chiba University), Wang Qinxue(National Institute for environmental Studies)

11:30 AM - 11:45 AM

[HCG22-10] A general model of Ecosystem Networks under Human Activity

★Invited Papers

*Reiichiro Ishii1 (1.Research Institute for Humanity and Nature)

Keywords:Ecosystem network, Sustainability of ecological resources

Most ecosystems on the planet have become seriously degraded as a result of human activities. The concept of an “Ecosystem Network” to cope with the complexity of ecosystems, human societies and the interactions between them From results of a project called “Collapse and Restoration of Ecosystem Networks under Human Activity.” (Ishii et al. 2014). Observation on The relationship between various ecosystems and their users (including local people and enterprises) tells that there is qualitative differences between the Ecosystem Networks among land ecosystems, e.g., between grasslands and tropical forests. I made a simple theoretical model to explain these diferennce from the ecological characteristics of the ecosystems. This gives insights in the sustainability of ecological resources and the associated environmental problems from perspective of the structure of the Ecosystem Network. The analysis also revealed clear differences in how the network should be restored for mitigation of the problems. Ecosystem degradation is ubiquitous today, and a solution is needed urgently. The concept of the Ecosystem Network employed in this project can be applied to other problems associated with managing ecological resources.