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基于生态系统服务功能和生态敏感性的生态空间划定研究: 以南宁市为例
引用本文:杨峻明, 胡恬滋, 李炳蓬, 等. 基于CA-MC模型的滇池流域生态敏感性时空演变特征[J]. 云南农业大学学报(自然科学), 2023, 38(5): 894−906. DOI: 10.12101/j.issn.1004-390X(n).202206058
作者姓名:杨峻明  胡恬滋  李炳蓬  李东徽  张敬丽  黄秋霞  葛倍辰  白天
作者单位:1.云南农业大学 园林园艺学院,云南 昆明 650201;2.北京农学院 园林学院,北京 102206;3.西南林业大学 园林园艺学院,云南 昆明 650224
基金项目:云南省基础研究项目 (202001AU070133)。
摘    要:目的

探究滇池流域近30年间生态敏感性时空演变特征。

方法

定量分析生态因子的相互关系,基于1995年、2005年、2010年和2018年的遥感影像和基础数据,运用CA-MC模型、重心迁移及核密度进行分析。

结果

1995—2018年,滇池流域土地覆盖/利用、河岸缓冲区和景观指数敏感性均呈波动下降趋势,归一化植被指数敏感性总体升高,流域综合生态敏感性呈现高等级向低等级转化的特征。不敏感、轻度敏感和中度敏感性区域面积整体上升,分别增加2.10%、0.47%和11.20%;高度敏感性区域面积波动下降,减少13.77%。各级生态敏感性重心转移及核密度分布差异显著,不敏感和轻度敏感性区域向西北方向迁移,中度敏感和极度敏感性区域向西南方向迁移,高度敏感性区域向东南方向迁移。通过CA-MC模型推演,2018—2026年滇池流域敏感性空间演变,总体敏感性等级缓慢上升。

结论

研究区域生态敏感性演变过程能够及时了解区域生态演变规律,提出生态保护策略。



关 键 词:生态敏感性  熵值法  CA-MC模型  重心迁移  核密度  滇池流域
收稿时间:2022-06-22
修稿时间:2023-08-06

Kernel density estimation of traffic accidents in a network space
YANG Junming, HU Tianzi, LI Bingpeng, et al. Spatial and Temporal Evolution Characteristic of Ecological Sensitivity of Dianchi Lake Basin Based on CA-MC Model[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2023, 38(5): 894-906. DOI: 10.12101/j.issn.1004-390X(n).202206058
Authors:YANG Junming  HU Tianzi  LI Bingpeng  LI Donghui  ZHANG Jingli  HUANG Qiuxia  GE Beichen  BAI Tian
Affiliation:1.College of Horticulture and Landscape, Yunnan Agricultural University, Kunming 650201, China;2.School of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China;3.College of Horticulture and Landscape, Southwest Forestry University, Kunming 650224, China
Abstract:PurposeTo explore the spatial and temporal evolution characteristics of ecological sensitivity in Dianchi Lake Basin during the past 30 years. MethodsQuantitative analysis was used for the interrelationships among ecological factors, based on remote sensing images and basic data in 1995, 2005, 2010 and 2018, and CA-MC model, migration of gravity center and kernel density estimation were applied. ResultsFrom 1995 to 2018, the land use and cover change, riparian buffers and landscape indices sensitivities of Dianchi Lake Basin showed a fluctuating decreasing trend, and the normalized difference vegetation index sensitivity increased overall, the comprehensive ecological sensitivity of the basin showed a transformation from high to low level. The area of insensitive, low sensitive and moderate sensitive increased overall, by 2.10%, 0.47% and 11.20%, respectively; the area of high sensitive fluctuated down, decreasing by 13.77%. The center of gravity shifted and kernel density distribution of ecological sensitivity at all levels differed significantly, with the insensitive and low sensitive areas migrated to the northwest, the moderate and extremely sensitive areas migrated to the southwest, and the high sensitive areas migrated to the southeast. The spatial evolution of sensitivity in the Dianchi Lake Basin from 2018 to 2026 is deduced by the CA-MC model, and the overall sensitivity level slowly increases. ConclusionThe study of regional ecological sensitivity evolution can provide timely understanding of regional ecological evolution patterns and propose ecological protection strategies.
Keywords:ecological sensitivity  entropy method  CA-MC model  migration of gravity center  kernel density  Dianchi Lake Basin
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