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中国沙漠 ›› 2023, Vol. 43 ›› Issue (4): 157-167.DOI: 10.7522/j.issn.1000-694X.2023.00022

• • 上一篇    

20002020年宁夏生态系统服务价值变化

张卫红1(), 谢家丽2,3(), 刘志鹏1, 胡洁1, 马媛1, 赵鸿雁2,3, 周伟1   

  1. 1.宁夏回族自治区生态环境监测中心,宁夏 银川 750002
    2.中国科学院西北生态环境资源研究院,甘肃 兰州 730000
    3.中国科学院大学,北京 100049
  • 收稿日期:2022-10-31 修回日期:2023-03-13 出版日期:2023-07-20 发布日期:2023-08-14
  • 通讯作者: 谢家丽
  • 作者简介:谢家丽(E-mail: xiejl@lzb.ac.cn
    张卫红(1975—),女,宁夏中卫市人,正高级工程师,主要从事生态环境质量综合分析研究。E-mail: zwh371@126.com
  • 基金资助:
    2015—2020年宁夏生态状况变化遥感调查评估项目

Assessment of the ecosystem service value change in Ningxia in 2000-2020

Weihong Zhang1(), Jiali Xie2,3(), Zhipeng Liu1, Jie Hu1, Yuan Ma1, Hongyan Zhao2,3, Wei Zhou1   

  1. 1.Ecological Environment Monitoring Center of Ningxia,Yinchuan 750002,China
    2.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2022-10-31 Revised:2023-03-13 Online:2023-07-20 Published:2023-08-14
  • Contact: Jiali Xie

摘要:

从省份尺度探讨土地利用动态变化及其生态系统服务价值(Ecosystem Service Value,ESV)响应对区域土地利用规划和生态建设评价极为重要。基于宁夏回族自治区2000、2010、2015、2020年4期Landsat ETM+、TM和OLI遥感影像,采用面向对象分类方法,构建区域2000—2020年土地利用数据库,利用土地利用动态度与ESV指数方法,并构建适用于本区域的单位面积ESV当量,分析了2000—2020年宁夏土地利用转型及其ESV响应过程。结果表明:草地和耕地是宁夏主要的土地利用类型,平均占比分别为44.7%和31.7%,随着生态工程的实施,区域耕地减少,林地和草地增加,而社会经济发展使得建设用地持续扩张。随着土地利用转型,2000—2020年宁夏ESV呈现增加—减小—增加的变化过程,范围为450.9亿~459.1亿元,2010年最高。草地和耕地是宁夏ESV的主要贡献地类,其中草地的ESV贡献为35.9%,明显低于其面积占比,而林地和湿地的ESV贡献高于其面积占比。吴忠市、固原市、中卫市、银川市、石嘴山市对宁夏ESV总量的多年平均贡献依次为29.9%、27.5%、20.5%、14.5%、7.6%。2000—2020年,各地市对全区ESV的贡献比例较为稳定,但由于各类土地利用在地市的分布差异较大,地市各个土地利用类型的ESV对该类总值的贡献发生变化。

关键词: 土地利用变化, 生态系统服务价值, 生态工程, 宁夏回族自治区

Abstract:

It is very important for regional land use planning and ecological construction evaluation to explore the dynamic change of land use and its ecosystem service value (ESV) response at the provincial and autonomous region scale. Based on the Landsat TM, ETM+ and OLLI remote sensing images of Ningxia Hui Autonomous Region in 2000, 2010, 2015 and 2020, we constructed the land use database from 2000 to 2020 using the object-oriented classification method. After the ESV equivalent per unit area was constructed for this region, the land use dynamic degree and ESV index methods were adopted to reveal the land use transition and its ESV response from 2000 to 2020. The results showed that grassland and cultivated land were the main land use types in Ningxia, accounting for 44.7% and 31.7% on average, respectively. With the implementation of ecological engineering, cultivated land decreased, and forest and grassland increased, while the development of social economy made the construction land continue to expand. With the land use transition, the total amount of ESV in Ningxia showed an increasing, decreasing and increasing process from 2000 to 2020, and ranged from 45.09 to 45.91 billion Yuan with the highest value in 2010. Grassland and cultivated land are the main ESV contribution types in Ningxia. The ESV contribution of grassland is 35.9%, which is obviously lower than its area proportion, while the ESV contribution of forest and wetland is higher than their area proportion. The average annual contribution of Wuzhong, Guyuan, Zhongwei, Yinchuan and Shizuishan to the total amount of ESV in Ningxia was 29.9%, 27.5%, 20.5%, 14.5% and 7.6%, respectively. From 2000 to 2020, the contribution of each city to the total value of ecosystem services in Ningxia was relatively stable. Due to the large differences in the distribution of various land uses in cities, the contribution of ESV of each land use type to its total value changes. The results can provide reference for land use planning and ecological construction evaluation in Ningxia.

Key words: land use change, ecosystem service value, ecological engineering, Ningxia Hui Autonomous Region

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