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2006-2018年汾河流域土地生态安全预警测度及时空格局演变
苏迎庆1, 刘庚1, 赵景波2, 郭利刚3, 林菲1, 牛俊杰1
1.太原师范学院 汾河流域科学发展研究中心, 山西 晋中 030619;2.陕西师范大学 地理科学与旅游学院, 陕西 西安 710119;3.太原师范学院 管理系, 山西 晋中 030619
摘要:
[目的] 开展汾河流域土地生态安全预警研究,为流域土地资源科学合理利用及可持续发展提供参考。[方法] 采用乘算模型、空间自相关及地理探测器方法分析2006-2018年流域土地生态安全警度的时空格局演化特征及主导因子。[结果] ①2006-2018年汾河流域土地生态安全警度演变趋势为向上开口抛物线的曲线特征,且由“较不安全”向“临界安全”状态转变。②空间上土地生态安全警度呈现“大集聚,小分散”的特征,并经历“下降-提高”的过程。③警度空间自相关由“正相关-负相关-正相关”转变,与流域土地生态安全警度时空格局分布基本一致。④影响流域土地生态安全的主导因子为经济发展水平、环境保护投入与治理力度、土地利用效率。[结论] 未来应优化汾河流域生产、生活、生态空间布局,建立流域生态补偿机制,加大环境保护与科研投入力度促进流域的生态安全水平的提高。
关键词:  土地生态安全预警  空间自相关  地理探测器  时空格局  汾河流域
DOI:10.13961/j.cnki.stbctb.2021.01.021
分类号:X171
基金项目:国家自然科学基金项目“晋西北生态重建优势种林地土壤水分研究:以沙棘和柠条为例”(41171423);山西省软科学项目(2018041004-6);山西省自然科学资助项目(201901D111294);山西省人文社科重点基地项目(20190123);太原师范学院校级1331创新团队项目(院办字[2017]34号)
Land Ecological Security Early Warning Measure and Spatial-Temporal Pattern Evolution in Fenhe River Basin During 2006-2018
Su Yingqing1, Liu Geng1, Zhao Jingbo2, Guo Ligang3, Lin Fei1, Niu Junjie1
1.Research Center for Scientific Development of Fenhe River Valley, Taiyuan Normal University, Jinzhong, Shanxi 030619, China;2.School of Geography and Tourism, Shaanxi Normal University, Xi'an, Shaanxi 710119, China;3.Department of Management, Taiyuan Normal University, Jinzhong, Shanxi 030619, China
Abstract:
[Objective] The early warning on the ecological security of watershed land in Fenhe River was studied to provide references for the scientific and rational utilization and sustainable development of watershed land resources.[Methods] The spatial and temporal pattern evolution characteristics and leading factors of land ecological security alertness in the basin from 2006 to 2018 were analyzed using a multiplier model, spatial autocorrelation, and a geographic detector.[Results] ① From 2006 to 2018, the evolution trend of the land ecological security alarm degree in the Fenhe River basin was a parabolic curve with upward opening, and it changed from the "less safe" to the "critically safe" state. ② Spatially, the ecological security alert degree of land was characterized by "large agglomeration and small dispersion" and underwent the process of "decline to increase." ③ The change in spatial autocorrelation of alertness experienced the process of "positive-correlation-negative-correlation-positive correlation," which was basically consistent with the spatial and temporal distribution of the ecological security alertness of the watershed land. ④ The leading factors affecting the land ecological security of the river basin for many years were the level of economic development, investment and governance of environmental protection, and land use efficiency.[Conclusion] In the future, the layout of production, living, and ecological space in the Fenhe River basin should be optimized. The ecological compensation mechanism of the basin should be established. Investment in environmental protection and scientific research should be increased to promote the ecological security level of the basin.
Key words:  early warning of land ecological security  spatial autocorrelation  geodetector  spatial-temporal pattern  Fenhe River basin