Definition of Upper Thresholds of Cultivated Land Proportions in Construction Project Areas —A Case Study in Shaanxi Province

Zhu Xiaoqing; Wang Yani; LiJiaying; Gan Min

doi:10.13961/j.cnki.stbctb.20241204.001

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Definition of Upper Thresholds of Cultivated Land Proportions in Construction Project Areas —A Case Study in Shaanxi Province

- Definition of Upper Thresholds of Cultivated Land Proportions in Construction Project Areas —A Case Study in Shaanxi Province
- Bulletin of Soiland Water Conservation Vol. 44, Issue 2, Pages: 258-266(2024)
- 作者机构：
  
  陕西省国土空间勘测规划院,陕西,西安,710054
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20241204.001
  CLC： U412.1
- Published：2024
- 稿件说明：
移动端阅览
Zhu Xiaoqing, Wang Yani, LiJiaying, et al. Definition of Upper Thresholds of Cultivated Land Proportions in Construction Project Areas —A Case Study in Shaanxi Province[J]. Bulletin of Soiland Water Conservation, 2024, 44(2): 258-266.
DOI：

Zhu Xiaoqing, Wang Yani, LiJiaying, et al. Definition of Upper Thresholds of Cultivated Land Proportions in Construction Project Areas —A Case Study in Shaanxi Province[J]. Bulletin of Soiland Water Conservation, 2024, 44(2): 258-266. DOI： 10.13961/j.cnki.stbctb.20241204.001.

摘要

[目的] 分析耕地资源与建设项目空间分布之间的关系，研究建设项目总规模中耕地占用比例上限的确定方法，为自然资源管理部门制定耕地保护措施提供依据。 [方法] 以陕西省为研究区，基于国土变更调查数据和建设项目样本数据，构建耕地密度作为指标，采用GIS空间叠加分析、地貌分区和统计参数对比方法，研究陕西省耕地密集程度分区方法，确定交通、能源、水利类单独选址建设项目总规模中的耕地占用比例上限。 [结果] 采用地貌分区和行政单元修订相结合的方法，以80%累计频率取值作为建设项目耕地占用比例的上限，将全省分为3个耕地密集程度区：陕北黄土高原耕地密集区、关中平原/陕南秦巴山地耕地密集区和其他区域(耕地非密集区)，确定线性项目和面状项目在3个分区中的耕地占用比例上限分别为26%，42%，20%以及45%，80%

27%。建设项目总规模中的耕地占用比例在耕地密集区明显高于非密集区，呈现出耕地密度越大建设项目耕地占用比例越高的变化规律。 [结论] 通过确定建设项目耕地占用比例上限阈值，可使各类项目的耕地节约率达1.2%～17.9%，在保障项目用地的同时能够控制13.9%～22.5%的建设项目过度占用耕地，达到有效保护耕地的效果。

Abstract

[Objective] The spatial relationship between cultivated lands and construction project distributions was analyzed

and a method for defining the upper thresholds of cultivated land proportions in construction project areas was determined in order to provide references for formulating measures of protecting cultivated land. [Methods] The study was conducted in Shaanxi Province. An index of cultivated land density was constructed based on land change survey data and construction project samples. With the integration of GIS spatial overlaying

geomorphic zoning

and statistical analysis methods

intensity zoning of cultivated lands in Shaanxi Province was presented and the upper thresholds of cultivated land proportions in construction project areas were determined. [Results] Using a method that combined geomorphic zoning with administrative unit revision

and taking the 80% cumulative frequency value as the thresholds

Shaanxi Province was divided into three zones of cultivated land density

including North Shaanxi Loess Plateau-intensive cultivated land

Guanzhong Plain/Qinba Mountain-intensive cultivated land

and other districts (non-intensive cultivated land). The upper thresholds of cultivated land proportions in linear project areas and in planar project areas in the three zones were determined to be 26%

42%

20%

and 45%

80%

27%

respectively. The proportion of cultivated land in construction projects in the districts of intensive cultivated land was significantly higher than in the districts of non-intensive cultivated land

showing that greater density of cultivated land led to a higher proportion of cultivated land in construction project areas. [Conclusion] By defining the upper threshold of the proportion of cultivated land occupied by construction projects

the cultivated land saving rate can range from 1.2% to 17.9%

which could control 13.9%—22.5% of construction projects against excessive occupation of cultivated land

thereby effectively protecting cultivated land resources.

关键词

Keywords

references

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