National Ecological Security Patterns
2010-06-28
来源：Primary Study of National Scale Ecological Security Pattern Acta Ecologic Sinica, 2009,29(10):5163-5175
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Sponsored by: The Ministry of Cultural Heritages, China, The Ministry of Environment Protection, China
Research and planning team: Peking University Graduate School of Landscape Architecture, and Turenscape
Completed: 2008
Published at: YU Kong-Jian, LI Hai-Long, LI Di-Hua，QIAO Qing, XI Xue-Song, 2009, Primary Study of National Scale Ecological Security Pattern Acta Ecologic Sinica, 2009, 29 (10):5163-5175
China, with its huge population and relative meager natural resources, fragile ecosystems, plus the unprecedented urbanization and economic growth in terms of speed and scale, are facing sever challenges of sustainability and survival. Addressing this challenge requires that the national land shall be planned and used wisely. This research is a pilot project aiming at establishing ecological security patterns at the national scale that will protect the most sensitive ecological landscapes and critical pattern as a strategy for wise conservation and wise development. Critical natural processes are analyzed systematically at the national scale, including headwater conservation, soil erosion prevention, storm water management and flood control, the prevention of desertification, and the biodiversity conservation. Individual security patterns for safeguarding each of these natural processes are identified and then integrated into an overall ecological security pattern. Three levels of National Ecological Security Pattern are defined, the lower security level, the moderate security level and the higher security level, which account for 35.7%, 65.1% and 84.9% of the national land respectively. This study is expected to provide a scientific basis for the under-going national function zoning and land use planning at the national scale.
Fig. 1. The framework for national ecological security patterns
Fig.2 5 calss headstream density map
Fig.3 Vegetation coverage of headwater conservation region
Fig.4 Ecological security pattern for headwater conservation
Fig.5 Flood simulation result
Fig.6 Ecological security pattern for flood control
Fig.7 The source of desertification
Fig.8 Ecological security pattern for desertification combating
Fig.9 Potential soil erosion risk assessment result
Fig.10 Ecological security pattern for soil and water conservation
Fig.11 Key region for flora protection
Fig.12 Key region for fauna protection
Fig.13 Ecological security pattern for biodiversity protection
Fig.14 Ingrated national ecological security pattern
Fig.15 Ingrated national ecological security pattern type
