Analysis of the Construction and Evolution of Ecological Security Patterns in Karst Areas

• Published in: Shui tu bao chi xue bao Vol. 39; no. 2; pp. 218 - 229
• Main Authors: FU Li, PENG Shuangyun, GONG Luping, HUANG Bangmei, MA Dongling, ZHU Ziyi
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Journal of Soil and Water Conservation 01.04.2025
• Subjects: ecological security pattern; ecological sensitivity evaluation; ecosystem service importance; karst region; minimum cumulative resistance model; pearl river source region
• ISSN: 1009-2242
• DOI: 10.13870/j.cnki.stbcxb.2025.02.005

［Objective］ Taking the Pearl River source region, a typical karst area, as the research object, this study aimed to construct a reasonable ecological security pattern, analyze the evolution of the ecological security pattern from 1990 to 2020, and provide scientific support for strengthening biodiversity conservation and ecological restoration in karst regions. ［Methods］ Based on the evaluation of ecosystem service importance and ecological sensitivity, in combination with methods such as MSPA, MCR, and the gravity model, the ecological security pattern of the Pearl River source region from 1990 to 2020 was constructed, and its spatial-temporal evolution characteristics were analyzed. ［Results］ 1) Ecological sources were concentrated in the southern part of Qujing City and the border with Wenshan Prefecture, while they were scattered in the western part of Yuxi City, the border of Kunming City with Qujing City and Honghe Prefecture, the southern part of Honghe Prefecture, and the northeastern part of Qujing C