武汉市土地利用与生态系统服务价值的时空变化分析

生态系统服务价值的研究是目前生态学研究的热点之一。本文应用Costanza生态系统服务价值计算公式，采用谢高地等人的中国陆地生态系统单位面积生态服务价值表，分析了1988-2004年武汉市土地利用的时空变化，并计算由此导致的生态系统服务价值及其结构的时空变化，结果发现：①1988～2004年，武汉市土地利用变化的热点地区和总ESV变化的热点地区都主要集中在城郊区。②1988-2004年，武汉市总ESV增加了，但生态系统服务价值结构变化较大，生态系统提供某些单项服务的功能相对减弱。③1988-2004年，水源涵养服务功能价值比例上升最多，食物生产服务功能价值比例下降最多；与提供其它单项服务的功能相比，主城区生态系统提供气体调节和土壤形成与保护等功能在减弱，城郊区生态系统提供气候调节、土壤形成与保护和食物生产的功能在减弱。

Analysis on Spatial-Temporal Changes of Land Use and Ecosystem Services Value in Wuhan City

Ecosystem services value has been one of the hottest issues in the field of ecology.The objective of this paper is to analyze the spatial-temporal changes of land use and to examine their effects on the spatial-temporal changes of ecosystem services value(ESV).The methods are based on ESV computing formula and ESV coefficients.The following results and conclusions could be obtained:(1) From 1988 to 2004,the changes of land use and the total value of ecosystem services focused on the rural-urban fringes.(2) The total value of ecosystem services of Wuhan city increased.However there are some changes in the structure of ecosystem services value and the function of ecosystem services.(3) The rate of water conservation services value had the greatest increase,whereas the rate of food production services value had the greatest decrease.Some function of ecosystem services were weakened in urban build-up areas,for example,gas regulation,soil formation and disposition,waste treatment,bio-diversity conservation and food production.Some function of ecosystem services were also weakened in rural-urban fringes,for example,climate regulation,soil formation and disposition and food production.