Hohhot Land Use Change And Landscape Response Of Ecological Functions

In this paper, Hohhot domain as the study area, mainly of land use change and ecological response to the question of functional effects. First of all, such as Arcview and Mapgis GIS support, Using remote sensing image information, land use change data and economic statistics, by means of the relevant mathematical model, Hohhot 1996-2005 on land use change, changes in the landscape ecological pattern has been studied, Reveals the pattern of land use and landscape ecological variation; Second, the establishment of a landscape ecosystem services of evaluation index system, And three landscape value of ecosystem services were calculated and analyzed. Finally, Land Use Change and Landscape response relationship between the services was studied.The results showed:(1) land use and landscape pattern characteristics: the type of change varies, Tended to decrease grass land, forest land, construction land and unused land tended to increase; Landscape indices showed, Hohhot domain landscape showing a fragmentation degree of the overall increase, Reduce the dominance and diversity increase direction.(2) reference Costanza's 17 and thank Heights 9 and indicators for ecosystem services, Information on the situation in the region combined with Hohhot 7 evaluation to determine. The production function, soil conservation function, water conservation, maintaining biodiversity, functional, eco-tourism features, gas regulation functions, environmental purification. Select the largest contribution to the ecological function of the four categories of landscape ecosystems of the function value.(3) ecosystem services assessment results show: Urban Landscape 1996-2005, ecosystem services domain increased generally. In which the ecological forest ecosystem service value of the largest ecological functions of its strongest support, Ecosystem services in the whole occupied an important position. Years from the function type to see the fastest growth in the tourism ecosystem services. Gas regulation and function of soil functions, maintenance of biodiversity features in the study period increased. Environmental purification function decreased slightly with water conservation.(4) years from the regional differences of view between the functional value of all counties in the proportion of constant change, But shows a growing trend. County asked the value of ecosystem services, has been in the lowest. And Linn County the annual Value of Ecological function changed little, Hohhot area in the study period the value of ecological functions were increasing. Ecological Function and Value Wuchuan quite big changes, the ecological functions of soil Zuoqi, more stable, the highest value. Qingshuihe value of the ecological function of relatively stable, but their ecological function is weak, low value.(5) on the whole ecological landscape function Hohhot services value increasing, function is growing. That Hohhot in the process of economic development and city, while constantly adjusting land use structure, use patterns, Attention to the improvement of ecological environment, ecological environment virtuous circle direction to the trend.(6) above, Hohhot domain 1996-2005 decade to improve the ecological functions of the landscape due to land use change process in the increase of forest land types, Forestry land utilization to improve the value of ecosystem services is tourism, the value of gas regulation functions to maintain soil function value to their message.