Spatiotemporal Characteristics of Soil Conservation and Protection Vacancies at Ganzhou City of Jiangxi Province

Zhou Junxin; Cai Meifang; Guo Fusheng; Huang Zhiqiang; Zhai Jiancheng

doi:10.13961/j.cnki.stbctb.2023.04.047

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Spatiotemporal Characteristics of Soil Conservation and Protection Vacancies at Ganzhou City of Jiangxi Province

- Spatiotemporal Characteristics of Soil Conservation and Protection Vacancies at Ganzhou City of Jiangxi Province
- Bulletin of Soiland Water Conservation Vol. 43, Issue 4, Pages: 413-420(2023)
- 作者机构：
  
  1. 东华理工大学地球科学学院,江西,南昌,330013
  2. 东华理工大学自然保护地规划研究院,江西,南昌,330013
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2023.04.047
  CLC： S157
- Published：2023
- 稿件说明：
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Zhou Junxin, Cai Meifang, Guo Fusheng, et al. Spatiotemporal Characteristics of Soil Conservation and Protection Vacancies at Ganzhou City of Jiangxi Province[J]. Bulletin of Soiland Water Conservation, 2023, 43(4): 413-420.
DOI：

Zhou Junxin, Cai Meifang, Guo Fusheng, et al. Spatiotemporal Characteristics of Soil Conservation and Protection Vacancies at Ganzhou City of Jiangxi Province[J]. Bulletin of Soiland Water Conservation, 2023, 43(4): 413-420. DOI： 10.13961/j.cnki.stbctb.2023.04.047.

摘要

[目的

]

明晰土壤保持、水源涵养时空格局并标识保护空缺区域，为地区发展规划和生态保护提供科学指导。[方法

]

以江西省赣州市为研究区，综合RUSLE模型、InVEST模型等生态评价方法和热点分析、叠加分析等分析工具，结合保护空缺理论，分析2000—2020年土壤保持和水源涵养时空演化特征，对比现有保护区域，标识潜在优先保护区。[结果

]

①赣州市土壤保持服务空间分布特征总体表现为四周高中心低，极重要区集中分布在四周的罗霄山脉、九连山脉、武夷山脉和庾山山脉，多年平均土壤保持总量为8.46×10

t。②水源涵养功能空间特征也表现为周高中低，极重要区集中分布在梅江流域、平江流域、贝岭水流域、犹江流域和桃江流域的上游及绵江流域和湘水流域东侧的武夷山脉，多年平均水源涵养深度为213.48 mm。③赣州市土壤保持和水源涵养功能显著的区域在空间上具有较强的关联性，对比现有自然保护地后标识保护空缺面积6 155.54 hm

，保护空缺区有几处较为明显且周边无保护地的集中分布区，分别位于兴国县北部、石城县东北部、瑞金市西北部和东南部、全南县中部、安远县东南部和寻乌县西部。[结论

]

气候因素、土地利用变化、地形地貌条件是影响赣州市土壤保持和水源涵养功能时空分异的重要因素，针对保护空缺区域和功能退化区域，应采取生态保护和修复策略。

Abstract

[Objective] The spatiotemporal pattern of soil conservation was studied and the protection vacancy areas were identified in order to provide references for regional development planning and ecological protection. [Methods] The study was conducted with data from Ganzhou City of Jiangxi Province. We used the integrated RUSLE model

the InVEST model

other ecological evaluation methods

hot spot analysis

overlay analysis

and other analysis tools combined with protection vacancy theory to analyze the space-time evolution characteristics of soil and water conservation from 2000 to 2020. We compared the existing protection areas

and identified potential priority protection areas. [Results] ① The spatial distribution of soil conservation services in Ganzhou City generally showed higher in the surrounding areas

and lower in the middle area

The most important areas were concentrated in the Luoxiao Mountains

Jiulian Mountains

Wuyi Mountains

and Yushan Mountains

with an average annual total soil conservation of 8.46×108 t. ② The spatial characteristics of the water conservation function were also generally characterized by higher in surrounding areas

and lower in middle area. The most important areas were concentrated in the upper reaches of Meijiang River basin

Pingjiang River basin

Beiling River basin

Youjiang River basin

and Taojiang River basin

as well as Wuyi Mountains to the east of Mianjiang River basin and Xiangshui River Basin. The water conservation depth averaged over many years was 213.48 mm. ③ The areas with significant soil and water conservation functions in Ganzhou City had strong spatial correlations. Compared with the existing natural reserves

the protection vacancy area was 6 155.54 hm2. There were several obvious areas with no protection around them that were located in the north of Xingguo County

the northeast of Shicheng County

the northwest and southeast of Ruijin City

and the middle of Quannan County

the southeast of Anyuan County

and the west of Xunwu County. [Conclusion] Climate factors

land use changes

and topographic and geomorphic conditions were important factors affecting the spatial and temporal differentiation of soil and water conservation functions in Ganzhou City. Ecological protection and restoration strategies should be adopted for the protection of vacant areas and functionally degraded areas.

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Keywords

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