Pattern Optimization of Landscape Ecology Security in Three Gorges Reservoir Region-A Case Study of Kaizhou District of Chongqin City

GUAN Dongjie; ZHAO Zulun; WANG Qiuyan; TAN Jing; DONG Lili

doi:10.13961/j.cnki.stbctb.2018.02.028

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Pattern Optimization of Landscape Ecology Security in Three Gorges Reservoir Region-A Case Study of Kaizhou District of Chongqin City

- Pattern Optimization of Landscape Ecology Security in Three Gorges Reservoir Region-A Case Study of Kaizhou District of Chongqin City
- Bulletin of Soiland Water Conservation Vol. 38, Issue 2, Pages: 171-177(2018)
- 作者机构：
  
  重庆交通大学建筑与城市规划学院,重庆,400074
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2018.02.028
  CLC：
- Published：2018
- 稿件说明：
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GUAN Dongjie, ZHAO Zulun, WANG Qiuyan, et al. Pattern Optimization of Landscape Ecology Security in Three Gorges Reservoir Region-A Case Study of Kaizhou District of Chongqin City[J]. Bulletin of Soiland Water Conservation, 2018, 38(2): 171-177.
DOI：

GUAN Dongjie, ZHAO Zulun, WANG Qiuyan, et al. Pattern Optimization of Landscape Ecology Security in Three Gorges Reservoir Region-A Case Study of Kaizhou District of Chongqin City[J]. Bulletin of Soiland Water Conservation, 2018, 38(2): 171-177. DOI： 10.13961/j.cnki.stbctb.2018.02.028.

摘要

[目的]探究重庆市开州区景观生态安全格局变化规律，根据不同功能区划进行分区优化，以提高景观生态格局稳定性及完善生态功能分区，为该区生态建设及城市可持续发展提供科学参考。[方法]采用地形位指数分析开州区各类用地在地形梯度上的分布特征，结合景观生态学原理，利用土地利用、高程及地形坡度等因子，选取生态"源"地，构建最小累积阻力模型（MCR），对开州区景观生态安全格局进行分区。[结果]①开州区的地形位指数范围是0.046~1.069，其中林地和草地的地形位指数较大，耕地的地形位指数值较小。②根据最小累积阻力值及突变点分区原理，将研究区域划分为核心保护区，生态缓冲区、生态敏感区、生产生活区等4个敏感区，1990-2010年核心保护区面积较少，生态缓冲区与生态敏感区面积变化不大，生活生产区面积增加。[结论]在分析低海拔、高程与坡度组合复杂的区域景观空间分布特点时，地形位指数更具优势。

Abstract

[Objective] A minimum cumulative resistance model was established to perform the function partition of landscape ecological safety pattern

and ecological source land was used to provide reference for the regional ecological environment protection.[Methods] The land use change data of Kaizhou District in Chongqing City in 1990

2000 and 2010 were firstly adopted to analyze the distribution characteristics of land use types in terms of terrain gradient by using topographic index. Then

landscape pattern

elevation and slope were integrated to build a minimum cumulative resistance model.[Results] ① The topographic index ranges from 0.046 to 1.069 in Kaizhou District. The topographic index values of woodland and grassland are larger

and the topography index value of cultivated land is small; ② According to the minimum value of cumulative resistance and the partition principle of mutation point

the studied area was divided into four functional areas

termed as ecological conservation core area

ecological buffer area

ecological sensitive area

production and living area. During the period of 1990-2010

ecological conservation core area was small; ecological buffer area and ecological sensitive area did not change dramatically; production and living area became larger.[Conclusion] The topographic index is more advantageous for analyzing the spatial distribution characteristics of complex regional landscape with low altitude

elevation and slope combination.

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references

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