Spatio-temporal of structure and function of habitat water ecological space in Dongting Lake region
[Objective]In order to slow down the continuous decline of the ecological environment quality and the weakening of the ecological service function in the Dongting Lake area,this paper proposed a research framework for the sustainable development of the habitat water ecological space from the perspectives of structure and function,with the hope of providing a theoretical and scientific basis for the protection of the ecological space and the guarantee of water security.[Method]Based on land use and social statistics,and with the help of ArcGIS analysis,this paper monitored the structure and function of the water-ecological space in the Dongting Lake area for the years 2010,2015 and 2020,and proposed a control framework and key initiatives based on this.[Result]1)The overall scale of the habitat water ecological space in the Dongting Lake area was over 7 300 km2,of which the water body area accounted for the largest proportion.The proportion of water bodies was the largest,followed by coastal terrestrial areas,while the proportion of water-land interlacing areas was the smallest,and there was a small decrease in the area of habitat water ecological space during the study period;the overall scale of habitat water ecological space in Yueyang was larger,while the scale of habitat water ecological space in Linli was smaller.2)The comprehensive function of habitat water ecological space in the Dongting Lake area was about 0.4000,which had increased somewhat during the study period;among the units,the comprehensive function value of habitat water ecological space in Yuanjiang city was the highest,while the comprehensive function value of habitat water ecological space in Jincheng city was relatively the lowest.3)The spatial distribution of habitat quality showed obvious spatial differentiation,with dongting Lake,coastal rivers,eastern and southern mountainous and hilly areas as the high-value concentrated distribution area,while the habitat quality was lower in urban areas with flat terrain and dense population and economic activities.[Conclusion]From the structural elements of habitat water ecological space,scientific planning of functional zoning of habitat water ecological space should be carried out,and combined with the delineation of"three zones and three lines",on the basis of which key initiatives such as multi-scale and multi-level planning and control for water ecological sustainability.
habitat water ecological spacestructure-functionsustainable developmentDongting Lake area
万方数据
维普
