重庆市生态系统服务功能价值时空变化研究

发布时间：2018-06-03 07:52

本文选题：重庆市 + 生态系统　；参考：《环境科学学报》2017年03期

【摘要】：基于重庆市2000年、2005年、2010年的3期遥感解译的土地利用矢量数据,通过分析区域生态系统服务价值理论和方法,参考并修正国外学者Costanza和国内谢高地的生态系统服务价值系数,对重庆市2000—2010年的土地利用二级分类指标进行了4大类17种小类的生态系统服务价值的估算,采用基于GIS的生态系统价值密度、ESV保持率等方法指标反映研究区10年来的生态系统服务价值时空变化特征,研究结果表明:1重庆市2000年、2005年和2010年各类生态系统年提供总服务价值量分别为4285.39、4490.29和4621.18亿元,就生态系统而言,林地生态系统提供的总服务价值最高,2010年占总价值的69.03%;其次是水域和草地,分别占总价值的14.35%和9.12%;就生态系统服务类别排序为调节服务(71.31%)支持服务(19.01%)供给服务(5.87%)文化服务(3.81%);22000—2010年重庆市生态系统服务价值量总体呈不断上涨的时序变化趋势,增幅达到7.27%;生态系统服务价值保持率为1.078,虽然城市建设占用了大量的农田生态系统,但单位面积生态系统服务价值较高的水域和林地面积的ESV价值增幅明显;3生态系统服务价值密度最高的空间分布上呈"西低东高,一轴两翼"的格局,中部的垫江县生态价值密度最低,主要受较为单一的农田生态系统影响;4研究区的ESV与GDP在空间分布和时序上的差异明显,2010年重庆的地均ESV为5.60万元·hm~(-2),高于全国的平均值;人均ESV为1.60万元,低于全国的平均值;人口密度大是造成人均ESV低的主要原因;2010年人均ESV与人均GDP的比值为1∶1.72,低于全国的平均接近1∶1的比值,表明重庆市的生态系统服务价值相对国民生产总值的相对不足.
[Abstract]:Based on the three issues of remote sensing interpretation of land use vector data in Chongqing in 2000, 2005 and 2010, through analyzing the theory and method of regional ecosystem service value, the authors refer to and revise the value coefficients of ecosystem services of foreign scholars Costanza and Xie highland in China. This paper estimates the value of ecosystem services of 17 subgroups of 4 categories of land use in Chongqing from 2000 to 2010. The index of ecosystem value density based on GIS was used to reflect the temporal and spatial changes of ecosystem service value in the past 10 years in the study area. The results show that the total service value of each ecosystem in 2000, 2005 and 2010 is 4285.39 and 4490.29 and 462.118 billion yuan respectively. As far as ecosystem is concerned, Forestland ecosystems provide the highest total value of services, accounting for 69.03 of the total value in 2010, followed by waters and grasslands, According to the category of ecosystem services, the order of value of ecosystem services is adjustment services 71.31) support services 19.01) supply services 3.81% and cultural services 3.81% and 9.12% of the total value of ecosystem services in Chongqing from 2000 to 2010, the value of ecosystem services in Chongqing showed an increasing trend of time series from 2000 to 2010. The increase reached 7.27 percent; the value of ecosystem services remained at 1.078, although urban construction took up a large number of farmland ecosystems, However, the increase of ESV value of water area and forestland area with higher ecosystem service value per unit area. The spatial distribution of the highest value density of ecosystem service value is "one axis, two wings" pattern, which is "west low and high east, one axis and two wings". The density of ecological value was the lowest in the central area of Shuanjiang County. The spatial distribution and time series of ESV and GDP in the study area mainly affected by a single farmland ecosystem were obviously different. In 2010, the average ESV of Chongqing was 56000 yuan, which was higher than the national average. The average per capita ESV is 16000 yuan, which is lower than the national average; the high population density is the main reason for the low per capita ESV; in 2010, the ratio of per capita ESV to per capita GDP is 1: 1.72, which is lower than the national average of nearly 1:1. It shows that the value of ecosystem services in Chongqing is relatively insufficient relative to GNP.
【作者单位】：重庆大学城市建设与环境工程学院;重庆市环境保护信息中心;重庆交通大学建筑与城市规划学院;重庆市环境科学研究院;
【基金】：国家自然科学基金(No.41201546) 重庆市自然科学基金(No.cstc2012jjA20010) 国家重大科技水环境污染与控制治理专项(No.2012ZX07503-002)~~
【分类号】：X171;X87

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