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| 四川省国家重点生态功能区土地利用变化及生态环境效应研究 |
| Analysis of Land Use Change and Eco environment Effects in National Key Ecological Function Areas of Sichuan |
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| DOI： |
| 中文关键词: 土地利用变化 生态环境效应 生态环境质量指数 生态贡献率 国家重点生态功能区 四川省 |
| 英文关键词: Land use change Ecological environmental effect Ecological quality index Ecological contribution rate National key ecological function areas Sichuan |
| 基金项目:国家自然科学基金资助项目（72303055）；四川省哲学社会科学青年基金资助项目（SCJJ23ND423） |
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| 中文摘要: |
| 以四川省国家重点生态功能区为研究对象，基于2011年、2016年和2022年土地利用数据，采用土地利用动态度和转移矩阵分析土地利用变化特征，并结合生态环境质量指数和土地利用转型生态贡献率模型，系统评估土地利用变化的生态环境效应。结果表明：研究区土地利用类型以林地和草地为主，两者占比超过90%，2011—2022年总体呈现草地减少、林地增加和建设用地缓慢扩张的变化趋势；生态环境质量指数由0616 4上升至0618 1，区域生态环境质量整体呈现改善态势，其空间分布与林地、草地等生态用地聚集程度密切相关；不同土地利用转型路径对生态环境质量的影响存在明显差异，其中耕地转林地是生态环境质量提升的主要贡献来源，而林地和草地的转出则是生态环境质量下降的重要因素。 |
| 英文摘要: |
| Taking the national key ecological function areas in Sichuan as the study area， this study analyzed the characteristics of land use change using dynamic degree and transfer matrix based on the land use data from 2011， 2016 and 2022， and systematically assessed the eco environmental effects of land use change by ecological quality index (EQI) and ecological contribution rate model of land use transition. The results showed that forestland and grassland were the dominant land use types in the study area， together accounting for over 90% of the total area. From 2011 to 2022，the overall trend was characterized by a decrease in grassland， an increase in forestland， and a gradual expansion of construction land. The EQI increased from 0616 4 to 0618 1， indicating an overall improvement trend in regional eco environmental quality. Its spatial distribution is closely related to the aggregation degree of ecological land，such as forestland and grassland. Different land use conversion pathways had markedly different effects on eco environmental quality. Among them， the conversion of cultivated land to forestland was the main contributor to the improvement of eco environmental quality， while the conversions of forestland and grassland to cultivated land were key drivers of eco environmental degradation. |
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