Temporal and Spatial Evolution of Habitat Quality and Its Influencing Factors in Anhui Province During 2000—2020

Zhang Qian; Yu Ran; Chu Zhaojun; Wang Cheng

doi:10.13961/j.cnki.stbctb.2024.02.041

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Temporal and Spatial Evolution of Habitat Quality and Its Influencing Factors in Anhui Province During 2000—2020

- Temporal and Spatial Evolution of Habitat Quality and Its Influencing Factors in Anhui Province During 2000—2020
- Bulletin of Soiland Water Conservation Vol. 44, Issue 2, Pages: 416-425(2024)
- 作者机构：
  
  1. 安徽农业大学经济管理学院,安徽,合肥,230036
  2. 安徽农业大学国土资源研究所,安徽,合肥,230036
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.02.041
  CLC： X826
- Published：2024
- 稿件说明：
移动端阅览
Zhang Qian, Yu Ran, Chu Zhaojun, et al. Temporal and Spatial Evolution of Habitat Quality and Its Influencing Factors in Anhui Province During 2000—2020[J]. Bulletin of Soiland Water Conservation, 2024, 44(2): 416-425.
DOI：

Zhang Qian, Yu Ran, Chu Zhaojun, et al. Temporal and Spatial Evolution of Habitat Quality and Its Influencing Factors in Anhui Province During 2000—2020[J]. Bulletin of Soiland Water Conservation, 2024, 44(2): 416-425. DOI： 10.13961/j.cnki.stbctb.2024.02.041.

摘要

[目的] 厘清安徽省生境质量的时空演变特征及其影响因素的空间作用机制，为提高研究区生态治理能力以及可持续发展能力提供科学依据。 [方法] 借助InVEST模型分析安徽省2000—2020年生境质量的时空格局演变特征，并以网格为分析单元，利用多尺度地理加权回归(MGWR)模型分析自然、社会经济、景观格局等层面因素对生境质量的空间作用机制。 [结果] ①2000—2020年安徽省的优势景观始终为耕地，区域内的景观转变主要发生在耕地、林地与建设用地之间，其中建设用地景观要素扩张最为明显。人类活动干扰程度的增大导致安徽省景观格局朝着破碎化、复杂化趋势演变。 ②2000—2020年间安徽省生境质量均值下降0.016，整体上呈现轻微退化趋势，区域内生境质量以较差(0.2～0.4)等级为主，两期数据占比均超过40%。安徽省生境质量存在明显的空间差异特征，在空间格局上呈现着“南高北低”的态势。 ③根据MGWR模型回归结果，降雨和归一化植被指数对安徽省生境质量存在显著的正向影响，其两期回归系数的正值比例均达80%以上，并随着时间推移进一步扩大，在空间格局上皖南的回归系数整体大于皖北；人口密度与单位面积GDP对于安徽省生境质量存在明显的负面影响，两期回归系数的负值比例均达90%以上，在空间格局上皖北的回归系数整体大于皖南；最大斑块指数与均匀度指数对安徽省生境质量存在正负双向影响，随着安徽省景观格局的破碎化与复杂化发展，其回归系数的负值比例也进一步扩大。 [结论] 安徽省生境质量在空间格局上呈现一定规律，在此基础上结合影响因素分析结果制定差异化的保护政策，因地制宜治理生态环境，以提高安徽省可持续发展能力，实现人与自然和谐共生的发展目标。

Abstract

[Objective] The spatial and temporal evolution characteristics of habitat quality and the spatial mechanism of influencing factors in Anhui Province were analyzed in order to provide a basis for improving the ecological management ability and sustainable development ability of the study area. [Methods] The InVEST model was used to analyze the spatial and temporal pattern evolution of habitat quality in Anhui Province from 2000 to 2020. A multi-scale geographical weighted regression (MGWR) model was used to analyze the spatial mechanisms of natural

socio-economic

landscape

and other factors on habitat quality. [Results] ① Cultivated land was always the dominant landscape in Anhui Province from 2000 to 2020

and landscape transformation in the region mainly occurred between cultivated land

forest land

and construction land. The expansion of the landscape elements of construction land was the most obvious. With the increase of disturbance degree of human activities

the landscape pattern of Anhui Province was evolving towards fragmentation and complexity. ② From 2000 to 2020

the average value of habitat quality in Anhui Province decreased by 0.016

showing a slight degradation trend on the whole. The habitat quality in the region was mainly poor (0.2~0.4)

and the two periods accounted for more than 40% of the data. There were obvious spatial differences in the habitat quality of Anhui Province

showing a spatial pattern of “higher in the south and lower in the north”. ③ According to the regression results of the MGWR model

rainfall and normalized vegetation index had significant positive effects on the habitat quality of Anhui Province

and the positive proportion of the regression coefficients in the two periods was greater than 80%

and further expanded with time. In terms of the spatial pattern

the regression coefficient of Southern Anhui Province was larger than that of Northern Anhui Province. Population density and GDP per unit area had significant negative effects on habitat quality in Anhui Province. The negative ratio of regression coefficients in both periods was greater than 90%

and the regression coefficient in Northern Anhui Province was larger than in Southern Anhui Province. The maximum patch index and the evenness index had positive and negative bidirectional effects on the habitat quality in Anhui Province. With the development of fragmentation and complexity of the landscape pattern in Anhui Province

the negative proportion of the regression coefficient further expanded. [Conclusion] The spatial pattern of habitat quality in Anhui Province presented a certain pattern. On this basis

combined with the analysis results of influencing factors

differentiated protection policies should be formulated to manage the ecological environment according to local conditions in order to improve the sustainable development ability of Anhui Province and to achieve the goal of harmonious coexistence between man and nature.

关键词

Keywords

references

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