Changes of coastal zone landscape spatial patterns and ecological quality in Liaoning Province from 2000 to 2010
The coastal zone is the most active natural region on earth's surface due to its special geographical location.The coastal wetland ecological environment has been seriously disturbed by human activity during the past decade.The aim of this study is to reveal changes in coastal wetland ecosystems in Liaoning,China and discuss reasons for change.To do this,landscape types in 2000,2005 and 2010 were analyzed for temporal and spatial characteristics of landscape changes.A landscape ecology classification index model was used to compute the transformed intensity of each ecosystem type.The quality of ecosystem habitat was evaluated using the biodiversity module in InVEST.The relationship between landscape pattern changes and human activities was explored.Results show that the area of natural and artificial wetlands increased in the past ten years and the area of aquaculture land spread was transferred from the sea.The negative value of landscape transformed intensity index in three periods indicate that ecosystem structure degenerated.The decline in the ecosystem habitat quality index implied that habitat quality and biodiversity degraded.Urban expansion and wetland and land reclamation caused this degradation in ecosystem habitat quality.Human activities appear to be a critical factor contributing to land use change phenomena in the coastal zone.Coastal wetland reclamation appeared to be the main reason for coastal wetland evolution.A scientific basis for analyzing characteristics of land use changes and revealing its driving force can provide for the sustainable use and management of coastal land and marine resources.
coastal zone of Liaoning Provincecoastal wetlandlandscape patternequality of ecosystem habitatdriving force
NETL
NSTL
万方数据
维普
