Spatial and Temporal Shifts in Land Use Structure and Changes of Ecosystem Service Values in Yan'an City from 1990 to 2020

Jiao Chunmeng; Xie Mingyang; Jiao Feng; Li Tuansheng

doi:10.13961/j.cnki.stbctb.20210803.001

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Spatial and Temporal Shifts in Land Use Structure and Changes of Ecosystem Service Values in Yan'an City from 1990 to 2020

- Spatial and Temporal Shifts in Land Use Structure and Changes of Ecosystem Service Values in Yan'an City from 1990 to 2020
- Bulletin of Soiland Water Conservation Vol. 41, Issue 6, Pages: 274-281(2021)
- 作者机构：
  
  1. 长安大学地球科学与资源学院,陕西,西安,710054
  2. 中国科学院大学,北京,100049
  3. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20210803.001
  CLC： F301.2
- Published：2021
- 稿件说明：
移动端阅览
Jiao Chunmeng, Xie Mingyang, Jiao Feng, et al. Spatial and Temporal Shifts in Land Use Structure and Changes of Ecosystem Service Values in Yan'an City from 1990 to 2020[J]. Bulletin of Soiland Water Conservation, 2021, 41(6): 274-281.
DOI：

Jiao Chunmeng, Xie Mingyang, Jiao Feng, et al. Spatial and Temporal Shifts in Land Use Structure and Changes of Ecosystem Service Values in Yan'an City from 1990 to 2020[J]. Bulletin of Soiland Water Conservation, 2021, 41(6): 274-281. DOI： 10.13961/j.cnki.stbctb.20210803.001.

摘要

[目的] 对1990—2020年陕西省延安市土地利用结构时空偏移及生态系统服务价值变化进行分析，为该区生态恢复工程的有效实施及因地制宜制定政策提供科学参考。[方法] 利用延安市1990—2020年7期遥感影像解译获取的土地利用数据，基于信息熵和偏移份额模型探讨了该区土地利用结构变化及其生态系统服务价值（ESV）变化。[结果] ①1990—2020年延安市土地利用结构信息熵由1.14 Nat降至0.99 Nat，土地利用结构有序性增强，均质性降低。②1990—2020年延安市建设用地、林地、水域属增长性结构。延安市北部为建设用地、林地、水域的竞争优势区，中部地区周围是草地的优势区，南部地区耕地竞争优势显著。③1990—2020年延安市ESV由23.75亿元增至31.45亿元，ESV增长率呈“北高南低”特征。[结论] 建设用地、林地、水域是延安市土地利用增长的根源，且ESV增长率和土地利用结构竞争偏移整体表现出明显的一致性。

Abstract

[Objective] The spatial and temporal shifts in land use structure and changes in ecosystem service values in Yan'an City of Shaanxi Province from 1990 to 2020 were analyzed

in order to provide scientific references for the effective implementation of regional ecological restoration projects and the designation of policies according to local conditions.[Methods] The land use data of Yan'an City obtained from the interpretation of seven periods of remote sensing images from 1990 to 2020 were used to explore the changes in land use structure and the changes in ecosystem service value (ESV) in the study area based on information entropy and offset share models.[Results] ① The information entropy of land use structure in Yan'an City from 1990 to 2020 decreased from 1.14 Nat to 0.99 Nat

and the order of land use structure increased while homogeneity decreased. ② From 1990 to 2020

the construction land

forest land and water area in Yan'an City were the growth structures. In the northern part of Yan'an City

the competitive advantage of construction land

forest land and water area were obvious. In the central area

the competitive advantage of grassland was obvious. And in the southern area

the competitive advantage of arable land was obvious. From 1990 to 2020

the ESV of Yan'an City increased from 2.375 billion yuan to 3.145 billion yuan

and the growth rate of ESV was characterized by "high in the north and low in the south".[Conclusion] Construction land

forest land and water area are the causes of land use growth in Yan'an City

and the ESV growth rate is consistent with the competitive deviation of land use structure.

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references

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