黄河流域生态系统服务价值时空变化特征

    Temporal and spatial variation characteristics of ecosystem service value in the Yellow River Basin

    • 摘要:
      研究目的 黄河流域是中国重要的生态屏障和经济地带,开展生态系统服务价值时空变化特征分析,对黄河流域生态环境保护和高质量可持续发展具有十分重要的意义。
      研究方法 本文计算了黄河流域2000年、2005年、2010年、2015年、2020年的生态系统服务价值,并运用热点分析法和生态经济协调模型,探究了生态系统服务价值变化率的高值和低值聚集分布特征及黄河流域各地市生态和经济协调程度,从国土空间规划的角度提出相关建议。
      研究结果 ①2000—2020年黄河流域生态系统服务价值(ESV)整体呈增加趋势,ESV由2000年的40217.33亿元增加到2020年的41135.10亿元,其中,草地的ESV值最大,未利用地的ESV最小。②黄河流域各地级市单位面积生态系统服务价值呈现“南高北低、中游高上下游低”的空间分布特征,2000—2020年各地级市单位面积生态系统服务价值较稳定,整体格局没有发生显著变化。各阶段ESV变化率的高值区与低值区空间集聚程度明显,聚集区主要集中在北部和东部。③2000—2020年黄河流域GDP的增加率远高于生态系统服务价值的增加率,生态和经济整体处于低度协调和低度冲突水平。
      结论 2000—2020年间,黄河流域生态系统服务价值虽呈增长趋势,但增速低于GDP,生态与经济协调度较低,未来需要加强优化生态安全格局,确保生态系统服务功能的可持续发展。

       

      Abstract:
      Objective The Yellow River Basin is an important ecological barrier and important economic zone in China. The analysis of the temporal and spatial variation characteristics of ecosystem service value (ESV)is of great significance to the ecological environment protection and high−quality sustainable development of the Yellow River Basin.
      Methods The ESV in 2000, 2005, 2010, 2015 and 2020 was calculated, and the hot spot analysis method and eco−economic harmony index model were used to explore the high and low value aggregation distribution characteristics of the change rate of ESV and the degree of eco−economic harmony of cities in the Yellow River Basin, and relevant suggestions were put forward from the perspective of national land spatial planning.
      Results ① The ESV of the Yellow River Basin will increase from 4021.733 billion yuan in 2000 to 4113.510 billion yuan in 2020. The ESV of grassland is the largest and that of unused land is the smallest. The service value of hydrological regulation, soil conservation and biodiversity maintenance is at a high level. ② The ESV of cities in the Yellow River Basin is characterized by the spatial distribution of "high in the south and low in the north, high in the middle reaches and lower in the upstream and downstream". From 2000 to 2020, the AESV in each region is relatively stable, and the overall pattern has not changed significantly. The high value area and low value area of ESV change rate in each stage show obvious aggregation state, and the aggregation areas are mainly concentrated in the north and east. ③ The GDP growth rate of the Yellow River Basin from 2000 to 2020 is much higher than that of the ecosystem service value, and the ecology and economy are at a low level of coordination and conflict.
      Conclusions Although the ESV in the Yellow River Basin showed an increasing trend from 2000 to 2020, the growth rate was lower than GDP, and the coordination between ecology and economy was relatively low. In the future, it is necessary to strengthen and optimize the ecological security pattern to ensure the sustainable development of ecosystem service functions.

       

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