JOURNAL OF NATURAL RESOURCES ›› 2019, Vol. 34 ›› Issue (10): 2244-2256.doi: 10.31497/zrzyxb.20191019

• Governance and Policy • Previous Articles    

Construction of ecological security pattern based on coordination between corridors and sources in national territorial space

HAN Zong-wei1,2(), JIAO sheng1(), HU Liang1, YANG Yu-min1, CAI Qing3, LI Bei1, ZHOU Min1   

  1. 1. School of Architecture, Hunan University, Changsha 410082, China
    2. Department of Tourism and Geography, Tongren University, Tongren 554300, Guizhou, China
    3. Hunan Research Academy of Enviromental Sciences, Changsha 410004, China
  • Received:2019-04-10 Revised:2019-07-30 Online:2019-10-28 Published:2019-10-28

Abstract:

Constructing an ecological security pattern with closer ecological connections and less ecological disturbance is an important way to make contributions to the balance between ecological protection and economic development in national territorial planning. This paper aims to establish an ecological security pattern, which should take into account the coordination and protection of sources and corridors in the ecological system in an integrated manner. Taking 33 counties (districts) around Dongting Lake as examples, it puts forward the ecological pattern formed by the ecological essential source areas and natural corridors, and the urbanization pattern formed by economic society source areas and artificial corridors. Then, we reveal the spatial characteristics of the ecological positive points and ecological disturbing points between the ecological pattern and urbanization pattern, and offer artificial and natural countermeasures for the problems in particular areas of the ecological environment. The main conclusions can be drawn as follows: (1) There should be 1537 identified ecological corridors in the ecological security pattern and 908 key points urged to be protected, which takes up 0.48% of economic society areas for returning to the ecological core source area, so as to promote the spatial relationship between ecological elements; (2) There are 8800 ecological disturbing points, 1.36% of ecological essential source areas and 12.95% of the length of natural corridors are in disturbance. In order to collaboratively develop the natural and artificial systems, the interference areas should be managed by means of creating buffers, establishing an early-warning system, and so on; (3) Natural corridors of the first to third levels in non-essential patches can be measured as 203.22 km2, 125.67 km2 and 35.59 km2, respectively, which can be defined as protected area of future ecological security pattern separately to meet a continuous increasing demand for ecological protection land. The results can provide a reference for the coordination of ecological land and urban construction land in the national territorial planning system.

Key words: national territorial space, ecological security pattern, ecological corridors and sources protection, ecological strategy point, Dongting Lake