和田河流域土地生态系统服务价值变化及敏感性研究

发布时间：2018-03-01 12:27

本文关键词： 土地利用类型价值系数生态服务价值敏感性和田河流域　出处：《水土保持研究》2017年06期 　论文类型：期刊论文

【摘要】：为了探究和田河流域综合治理项目的生态效益,基于和田河流域1990年、2000年、2010年的遥感解译数据,并选取符合干旱区特点的Constanza价值系数,依据研究区的实际情况进行修正,分析了1990—2010年的土地类型面积变化、生态服务价值变化,探讨了服务价值对系数变动的敏感性。结果表明:(1)1990—2010年林地面积增加29.33%,变化幅度最大;草地、耕地、湿地的面积分别减少7.42%,17.45%,7.1%,变化幅度相对较小;河湖与荒漠面积的减少幅度均在1%以下;(2)和田河流域生态系统服务总价值在1990年、2000年、2010年分别为380.62亿元、341.82亿元、350.83亿元,2000年比1990年减少了10.19%,2010年比1990年减少了7.83%;(3)经敏感性分析验证,估算结果对生态服务价值系数的敏感性指数均在0.35以下,所选价值系数合理,研究结果可信。
[Abstract]:In order to explore the ecological benefits of the comprehensive management project of the Hotan River Basin, based on the remote sensing interpretation data of the Hotan River Basin on 1990, 2000 and 2010, and selecting the Constanza value coefficient which accords with the characteristics of arid area, the paper makes a correction according to the actual situation of the study area. The changes of land type area and ecological service value from 1990 to 2010 were analyzed, and the sensitivity of service value to coefficient change was discussed. The results showed that forest land area increased 29.33 3 in 1990 to 2010, and grassland, cultivated land, grassland, cultivated land, grassland, cultivated land, grassland, cultivated land, grassland and cultivated land, respectively. The area of wetland decreased 7.42% and 17.45% respectively, and the change was relatively small. In 1990, 2000 and 2010, the total value of ecosystem services was thirty-eight billion sixty-two million yuan, thirty-four billion one hundred and eighty-two million yuan, thirty-five billion eighty-three million yuan, respectively, 10.19% lower than 2010, 7.83% lower than #date6 #, and 7.83% lower than #date6 # in terms of sensitivity analysis, the total value of ecosystem services in Hetian River basin was thirty-eight billion sixty-two million yuan, thirty-four billion one hundred and eighty-two million yuan and thirty-five billion eighty-three million yuan respectively in 1990, 2000 and 2010, respectively. The sensitivity indexes of the estimated results to the value coefficients of ecological services were all below 0.35. The selected value coefficients were reasonable and the results of the study were credible.
【作者单位】：新疆农业大学;中国科学院新疆生态与地理研究所;
【基金】：中国科学院“西部之光”人才培养计划(XBBS-2014-13) 国家自然科学基金(31370551,41471099,31400466)
【分类号】：F301.2

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