| It is an significant carrier of human existence and growth about Land resource.it has been a ccompanied by the acceleration of Urban sprawl over the years,the intensity of land use and development has become more and more serious,leading to the waning of ecosystem function in the region.The city culters on the Northern Part of Tianshan Mountain is a spectial drought the frontier territory,In the meantime is the mountain land-green fields-wilderness composite region all year round,It has been impacted by extreme the weather alternation and people behavior ways.It is vital to study the fitness of their biocoenosis.Consequencely,based on the incorporation of ecosysem service worth divisor mean and dissects of space-time,this paper uses the regional land use state as a begining point to quantitatively assess the spatial and time changes of the ecological system caused by land use in the study area,in order to promote the study The mass and soundness of the regional ecosystem have settled a wise decision basics for instructing the build of a several model of land space conservation and progress.In 2000,2010,2018,based on the land use data of the Northern Part of Tianshan city culters,this academicr paper organizes the number of methods dissect of land utilization alter from the standpoits of land allocation time and,landscape model and other angles of the digitial analysis of land alternation etc.On this basis,employing value factor scale and GIS interspace datas analysis,the axial and laterall assessment features of ESV of city culters in the Northern Part of Tianshan Mountains were decomposed.Last but not least,the relationship between land use and ecological economic value in the study area is explored.The results are as follows:(1)2000-2018 a north part of tianshan mountains a little degree of vindication land use a certain amount of alternation of city clusters,In the last 20 years or so,city clusters of land use dynamic presents a"3 increases 3 decreases"state of the arable land(308446 hm~2),water(8996hm~2),the zone of artificial land(107377 hm~2)displayed ascending trend,wood land(-3655 hm~2),meadow land(-300807 hm~2),unavailable land(120344 hm~2)area falling trend;the biggest movement transformation degree is the distract of artifical land(0.88%)and plowland(2.77%),,respectively.During the nearly 20 years,there were in sum 682703hm~2 of land use shift,and the shift from grass land to arable land and artifical land was the most prominent.The shift from meadow land to arable land was 304108hm~2 and 44824hm~2,respectively.The transfer from meadow to arable land(304108hm~2)and construction land(44824hm~2)was the most spotlinght The change of land use shift is extra awesome remarkable in Wu chang Shi ke and other economically affluent diatricts.The main diploma of panorma find out about vicinity is weakening,and the panorama iscreating towards diversification and complication..(2)For almost twenty years,the sum ESV of city culters on the Northern Slope of Tianshan Mountain decreased from 1 410.76×10~8 to 1 400.17×10~8 yuan,with a total loss of 10.59×10~8yuan.In sum of ecological service value increased by 1.29×10~8 yuan from 2000 to 2010 and decreased by 11.86×10~8 yuan from 2010 to 2018,among which the value of supporting service module reduced the most,with in sum decrease 4.04×10~8 yuan.in the during 20 years,and a great many reduction of grass land was the major cause for the reduce of ESV of this module.at the level of the ecosystem service value grid,good values have been distributed in the north-west and mid districts,while poor values are scattered in the north and southeast,and the spread of poor ESV and(3)good ESV are reducing ceaselessly,and start to shift to the secondary ESV.at the administrative level,Kuitun City and Wusu City have the highest land average ESV sum and the most obvious reduce.(4)Variation contribution rate and land ecological coordination degree is adopted to improve the two relations research,studies replay that during the study of the research area of arable land and grass land ecological service value of the make a contribute to rate is highest,is the major affecting the north part of tianshan mountain cities ecological services land type value,land and econimic harmony exponent results uncover that the study region of the wholel land ecological coordination degree index,2000-2010 a,a great number of areas of city culters of land ecological coordination degree as low-grade contradiction zone,suggests that the land use conversion speed is greater than the ESV ascending speed,2010-2018a,a lot of the study area of land ecological coordination degree of moderate conflict area,The contradiction degree of land utilization financial circumances in the study distract is rasied,and the monetry circumances is seriously get worse. |
