Ecological Footprint Model Study In Guizhou Based On Ecosystem Services Function

In recent years,With the rapid development of the population and socio-economy and more and more frequent of extreme weather,the water problem becomes more and more prominent,such as water shortages,water environment damage,water ecological deterioration and frequent flooding.Guizhou is mountainous,and its slopes is steep,the valley is deep,Guizhou is a typical area of karst topography,serious leakage of surface water,easy pollution and hard treatment of water environment,serious shortage of engineering water,water ecological footprint is the effective tools to measure the status of water resource utilization and the pressure on water ecology,therefore,this paper study the water ecological footprint in Guizhou province based on ecological footprint to provide theoretical reference and reference significance for the sustainable development and utilization of water resource and water environment in karst region and Guizhou province.As for defects and shortage of the traditional and existing water ecological footprint theory and model,This paper proposed the concept and model of water ecological footprint based on ecosystem supply and purification services function,and dividing it into two parts: biological production and non-biological production water Ecological footprint,establishing three types of account: aquatic products,water resource,water environment,And calculating and analyzing it with the example of Guizhou and districts in 2000-2014 on this basis,The results showed that :(1)In the biological production-aquatic products accounts,As a whole,the ecological footprint of per aquatic products were generally on an upward trend;the volatility of aquatic products ecological carrying capacity was relatively small,The fluctuation range is between 0.0053 and 0.0071hm~2,aquatic products consumption were in the serious situation of ecological deficit,and its ecological pressure was large.(2)In the non-biological production-water resources accounts,the overall trend of per water resources ecological footprint was gradually rising in Guizhou,individual ye-ars fluctuated slightly,But the range is small,per water resource ecological carrying capacity has an evident fluctuation trend,water resources were surplus and its ecological pressure was relatively smaller.(3)In the non-biological production-water environment accounts,the ecological pressure of water environment mainly comes from nitrogen pollution,the ecological footprint of water pollution were little changed in 2000-2010,but it fluctuated widely in 2011-2014,the account values of domestic water pollution were greater than industrial water pollution over the years,the water ecological carrying capacity of water environment has a fluctuation changed significantly trend,water environment were in the serious situation of ecological deficit,and its ecological pressure was large.(4)The ecological footprint changing trend of per capita aquatic products are basically same in 2000-2014 years of Guizhou province(states),except for few years fluctuation is large,most of period is small;The spatial distribution pattern of municipalities(state)is the agglomeration,the whole spatial distribution pattern is gradually increasing from West to East,the larger value of ecological footprint(>0.01hm~2)mainly concentrated in the Southeastern,South,Southwestern of Guizhou,the lower value(0-0.005hm~2)is mainly distributed in the West of Guizhou.The ecological footprint of per capita water resources in Guizhou city(2000-2014)showed an increasing trend,the regularity is not obvious.The spatial distribution of ecological footprint in cities(prefectures)shows the South,Southeastern,North of Guizhou have gradually increased and then declined,while the Northeast of Guizhou has remained unchanged,and the situation of the West of Guizhou has changed little,the smaller value of ecological footprint(0.05-0.08hm~2)mainly concentrated in the Southwest,Northwest,Northeast of Guizhou,the larger value(0.08-0.1hm~2,>0.1 hm~2)is mainly distributed in the South,Southeast and North of Guizhou province.The per capita ecological footprint of water pollution of Guizhou city(state)showed a trend of fluctuations in 2000-2014,especially the fluctuations are more obvious in 2010-2014.The ecological footprint of water pollution is uneven spatial distribution pattern of Municipalities(state),the value of most area is relatively smaller(0-0.15hm~2)in 2000-2010,the value of most area is relatively larger(>0.25hm~2)in 2014,the ecological environment of Municipalities(state)has deteriorated seriously.A conclusion can be drawn from the comparative analysis of existing models that : this model accounted more complete,excluding equilibrium factor and yield factor in the calculation formula of water ecological capacity,proving the pressure of water ecosystem was evaluated by the maximum ecological pressure index would be more reasonable,reflecting the actual situation of water ecology in Guizhou was more accurate.