Analysis and risk assessment of cultivated land use pattern change in Yunnan Province from quantity-quality-ecology tripartite perspective

Liu Chuan; Zhang Shuqing; Huang Yizhong; Li Yongping

doi:10.13961/j.cnki.stbctb.2025.02.037

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Analysis and risk assessment of cultivated land use pattern change in Yunnan Province from quantity-quality-ecology tripartite perspective

- Analysis and risk assessment of cultivated land use pattern change in Yunnan Province from quantity-quality-ecology tripartite perspective
- Bulletin of Soiland Water Conservation Vol. 45, Issue 2, Pages: 371-382(2025)
- 作者机构：
  
  1. 昆明理工大学国土资源工程学院,云南,昆明,650093
  2. 云南省国土资源规划设计研究院,云南,昆明,650216
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2025.02.037
  CLC： F301.2
- Online First：16 May 2025，
  
  Published：2025
- 稿件说明：
移动端阅览
Liu Chuan, Zhang Shuqing, Huang Yizhong, et al. Analysis and risk assessment of cultivated land use pattern change in Yunnan Province from quantity-quality-ecology tripartite perspective[J]. Bulletin of Soiland Water Conservation, 2025, 45(2): 371-382.
DOI：

Liu Chuan, Zhang Shuqing, Huang Yizhong, et al. Analysis and risk assessment of cultivated land use pattern change in Yunnan Province from quantity-quality-ecology tripartite perspective[J]. Bulletin of Soiland Water Conservation, 2025, 45(2): 371-382. DOI： 10.13961/j.cnki.stbctb.2025.02.037.

摘要

[目的] 多角度研究云南省耕地利用格局变化，划分耕地利用风险等级，为研究区耕地保护政策与管理策略提供依据，同时为其他地区耕地保护提供参考与借鉴。[方法] 基于2011，2021年土地利用调查数据，从耕地保护数量—质量—生态“三位一体”视角出发，利用景观指数、压力—状态—响应(PSR)模型等方法综合分析耕地利用格局变化特征，并依据其动态变化运用状态空间模型划分耕地利用风险等级。[结果] ①2011—2021年云南省耕地数量变化具有区域化差异，变化显著的区县呈现出“全局零散、局部聚集”的分布特征。②耕地平均土层厚度下降，土壤有机质含量和阳离子交换能力有所提升；耕地斑块密度(PD)上升1.251，聚集度指数(AI)和平均形状指数(MSI)下降5.672%和0.055，说明耕地破碎化程度加剧，集聚性减弱，斑块形状趋于规则。③耕地生态安全水平总体下降12.67%，整体呈现“南高北低，中部两级化”的空间格局。④综合耕地利用动态变化对云南省进行耕地利用风险分区并提出调控建议。[结论] 滇东北、滇西南及滇中为云南省耕地变化热点，全省土壤质量提升但破碎化加剧，耕地生态安全水平呈现下降趋势，需结合风险分区因地制宜精准治理。

Abstract

[Objective] The change in cultivated land use patterns in Yunnan Province was studied from multiple perspectives

and the risk level of cultivated land use was divided to inform protection policies and management strategies to provide a reference for the protection of cultivated land in other areas. [Methods] Utilizing land use survey data from 2011 and 2021

and adopting a quantity-quality-ecology tripartite perspective

we comprehensively analyzed the characteristics of changes in cultivated land use patterns by employing landscape indices and the pressure-state-response (PSR) model. Based on the state-space model

we categorized the risk levels of cultivated land use. [Results] ① Regional variations were observed in the changes of cultivated land quantity in Yunnan Province from 2011 to 2021

with districts and counties exhibiting significant changes and displaying a distribution pattern characterized by 'overall scattered and local aggregation.’ ② The average soil layer thickness of cultivated land decreased

the content of soil organic matter and cation exchange capacity increased

and the patch density (PD) of cultivated land increased by 1.251; aggregation index (AI) and mean shape index (MSI) decreased by 5.672% and 0.055

respectively

indicating that the degree of farmland fragmentation increased

agglomeration weakened

and patch shape tended to be regular. ③ The overall level of ecological security of cultivated land declined

revealing a spatial pattern of 'high in the south

low in the north

polarized in the middle.’ Based on the dynamic changes in cultivated land

we conducted risk zoning for cultivated land use in Yunnan Province and proposed regulatory suggestions. [Conclusion] Northeast

southwest

and central Yunnan are hotspots for cultivated land change in Yunnan Province. Although soil quality across the province has improved

soil fragmentation has intensified. The ecological security level of cultivated land has shown a downward trend

necessitating precise management tailored to local conditions and risk zones.

关键词

Keywords

references

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