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广东省1980-2018年“三生”用地转型对生态环境质量的影响
关翠柳, 闻德保, 李雨豪, 李龙
广州大学 地理科学与遥感学院, 广东 广州 510006
摘要:
[目的] 研究基于格网单元的广东省“三生”用地转型对生态环境质量的影响,为区域生态、经济协调发展提供科学依据。[方法] 基于广东省8期土地利用现状遥感监测数据和“三生”土地利用主导功能分类体系,对该区“三生”用地转型特征及生态环境质量进行定量研究。[结果] ①1980—2018年,广东省农业生产用地面积大幅减少,共减少了5 369.61 km2,城镇生活用地、工矿生产用地面积大幅增加,分别增加了4 526.02 km2,2 406.93 km2,农业生产用地和林地生态用地间转换现象明显。②“三生”用地空间转型主要表现为工矿生产用地、林地生态用地中心逐渐靠近广东省几何中心,农业生产用地、城镇生活用地中心逐渐远离几何中心。③广东省生态环境质量指数从1980年0.648 1降至2018年的0.641 4,生态环境质量空间分异明显,呈现“沿海低—内陆高”的分布特点。④Getis-Ord Gi*指数表明,生态环境质量变化热点区域集中在粤东西北地区,冷点区域多位于珠江三角洲地区。⑤广东省生态环境存在改善和恶化两种趋势。[结论] 建议充分考虑区域自然条件、功能定位以及导致生态环境变化的主导因素,制定土地政策措施,实现土地利用方式创新,更好地推动广东省区域均衡发展。
关键词:  “三生”用地  土地利用转型  生态环境质量  格网  热点分析
DOI:10.13961/j.cnki.stbctb.2021.04.033
分类号:X24;F301.2
基金项目:国家自然科学基金项目“多源数据融合的中国区域电离层天气短期预报模型与方法研究”(42074030)
Effects of Production-Ecological-Living Land Use Transformation on Eco-environment Quality in Guangdong Province During 1980-2018
Guan Cuiliu, Wen Debao, Li Yuhao, Li Long
School of Geographic Sciences and Remote Sensing, Guangzhou University, Guangzhou, Guangdong 510006, China
Abstract:
[Objective] The effects of production-ecological-living land use transformation on eco-environment quality in Guangdong Province were studied based upon grid cell in order to provide scientific basis for coordinated development of regional ecology and economic. [Methods] Based on the eight-phase Landsat TM image interpretation data of Guangdong Province and the dominant function classification system of land use in production-ecology-living space, and the characteristics of production-ecological-living land use transformation as well as its eco-environment quality were quantitatively analyzed. [Results] ① From 1980 to 2018, the agricultural productive land decreased greatly, with a total decrease of 5 369.61 km2 and the mining productive land and urban living land increased greatly, with a total increase of 4 526.02 km2 and 2 406.93 km2. The conversion between agricultural production land and woodland ecological land was obvious. ② Spatial transformation of production-ecological-living land use in Guangdong Province was mainly manifested as the mean center of mining productive land and forest ecological land became closer to the geometric center of Guangdong Province, the mean center of agricultural productive land and urban living land moved away from geometric center. ③ The index of eco-environment quality in Guangdong Province was reduced from 0.648 1 in 1980 to 0.641 4 in 2018. The spatial differentiation of ecological environment quality was obvious, and the eco-environment quality in coastal cities was much lower than inland area. ④ The Getis-Ord Gi* index proved that the hot region of the change of eco-environment quality was concentrated on the Eastern, Western and Northern regions of Guangdong Province, while the cold region was chiefly located in Pearl River Delta. ⑤ Guangdong Province had two trends which were ecological improvement and ecological deterioration. [Conclusion] Full consideration should be given to the regional natural considerations, the function positioning and the leading factors of ecological environment changes in order to formulate land policies and measures and promote the balanced development of Guangdong Province.
Key words:  production-ecological-living land use  land use transformation  eco-environment quality  grid square  hotspot analysis