1990—2018年长沙市土地利用变化对生态系统服务价值的影响

彭毅; 王远超; 高阳

doi:10.19388/j.zgdzdc.2021.03.09

1990—2018年长沙市土地利用变化对生态系统服务价值的影响

彭毅^1,,
王远超²,
高阳^3,4, ,

1.
中国地质调查局长沙自然资源综合调查中心,湖南长沙 410000
2.
中国地质调查局应用地质研究中心,四川成都 610036
3.
中国农业大学土地科学与技术学院,北京 100193
4.
自然资源部农用地质量与监控重点实验室,北京 100193

基金项目: 中国地质调查局“重点地区地下水流场调查(编号: DD20211557)”项目资助

详细信息

作者简介:
彭毅(1988—),男,助理工程师,主要从事生态地质调查方面研究。Email: zrzy_py@163.com。

通信作者:
高阳(1985—),女,副教授,主要从事土地利用/覆盖变化、生态系统服务方面研究。Email: yanggao@cau.edu.cn。

中图分类号: TP79;P962;F301.2;F293.2
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出版历程
- 收稿日期: 2021-01-13
- 修回日期: 2021-03-14
- 刊出日期: 2021-06-19

Impact of land use change on ecosystem service value in Changsha City from 1990 to 2018

1.
Changsha Natural Resources Comprehensive Survey Center, China Geological Survey, Hunan Changsha 410000, China
2.
Applied Geological Research Center, China Geological Survey, Sichuan Chengdu 610036, China
3.
College of Land Science and Technology, China Agricultural University, Beijing 100193, China
4.
Key Laboratory of Agricultural Land Quality and Monitoring, Ministry of Natural Resources, Beijing 100193, China

摘要

摘要: 评估生态系统服务价值(Ecosystem Service Values,ESV)有利于衡量生态系统服务供给潜力和生态效益的大小,对城市生态规划与土地利用管控起到重要的支撑作用。选择长沙市为研究区域,基于1990、2000、2010和2018年4期土地利用现状遥感监测数据集,利用ArcGIS软件和经本地化校正的当量因子法,分析1990—2018年间的土地利用变化特征,并探讨土地利用变化对ESV的影响。结果表明: ①1990—2018年长沙市土地利用变化轨迹以耕地→林地互相转化以及建设用地对耕地、林地的侵占为主; ②1990—2018年长沙市的ESV共减少53.17×10⁸ 元,降幅3.59%,除水域外各类ESV均呈下降趋势,林地和耕地服务价值减少最明显; ③在各单项服务功能中,水文调节的价值最大,其次是气候调节,两者之和占总价值的54%; ④“退耕还林”“退田还湖”“兴工强市”等政策引起的土地利用变化势必对ESV造成影响,城市快速扩张、土地开发会导致ESV不断下降。综合分析认为,在调整研究区土地利用结构、优化土地配置时应充分重视水域、林地等生态系统服务价值较高的土地利用类型,减缓ESV的下降趋势。
- 生态系统服务价值(ESV) /
- 土地利用 /
- 长沙市 /
- 当量因子
Abstract: The evaluation of ecosystem service value is conducive to measuring the supply potential of ecosystem service and the ecological benefit, which can provide important references for city ecological planning and land use management. Based on the remote sensing data of 1990, 2000, 2010 and 2018, the authors in this paper have taken Changsha as a study case to analyze the land use change from 1990 to 2018 and discussed the impact of land use change on ecosystem service value, by ArcGIS and equivalent factor methods with localization correction. The results are as follcws. ① The land use trajectories in Changsha are mainly the conversion of cultivated land and woodland, and the encroachment of cultivated land and woodland by construction land from 1990 to 2018. ② The ecosystem service value in Changsha decreased by 5.317 billion yuan, with the decreasing rate of 3.59% from 1990 to 2018. Except the water area, the value of all the ecosystem service showed a downward trend, especially in the cultivated land and woodland. ③ Hydrological regulation and climate regulation were the top two service functions with high service value, contributing about 54% of the total service value. ④ A series of policies such as Returning Farmland to Forest, Returning Farmland to Lakes and Strengthening Industry to Strengthen City have brought a remarkable impact on ESV, and the urban expansion and land development would lead to declining ESV. It is necessary to pay more attention to the land use types with higher ecosystem service value such as water area and woodland. Adjusting the land use structure and optimizing land allocation in the study area can mitigate the downtrend of ESV in these areas.
- Ecosystem Service Value(ESV) /
- land use /
- Changsha City /
- equivalent factor

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