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| 星云湖流域生态环境质量时空变化评价 |
| Evaluation of Temporal and Spatial Variation of Ecological Environment Quality in Xingyun Lake Basin |
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| DOI： |
| 中文关键词: 生态环境质量 时空变化 RSEI模型 土地利用变化 星云湖 |
| 英文关键词: Ecological environment quality Temporal and spatial variation RSEI model Land use change Xingyun Lake |
| 基金项目:国家自然科学基金资助项目（No41861054，No62266026）；云南省教育厅科学研究基金资助项目（2020J0055， 2021J0047） |
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| 摘要点击次数: 475 |
| 全文下载次数: 135 |
| 中文摘要: |
| 选取1988—2021年4期Landsat影像，反演绿度、湿度、热度、干度指标，采用主成分分析法构建遥感生态指数（RSEI），监测星云湖流域生态环境质量时空变化。结果表明：1988—2021年星云湖流域生态环境质量变化较小，稳定在中等水平；沿湖平地及山间河谷生态环境质量恶化，边缘山区生态环境质量改善；该流域土地利用类型以耕地、林地为主，土地利用变化响应生态环境质量的变化；2000年后绿度和湿度指标对生态环境质量的改善越来越重要；生态环境质量的空间分布呈聚集性，高-高聚集区由沿湖平地逐渐向山区转移，低-低聚集区主要分布在石漠化现象严重的山区。 |
| 英文摘要: |
| 4 periods of Landsat images from 1988 to 2021 were selected to invert greenness， humidity， heat and dryness indexes， and principal component analysis was used to construct a remote sensing ecological index(RSEI) to monitor the temporal and spatial variation of ecological environment quality in Xingyun Lake basin. The results showed that from 1988 to 2021， the ecological environment quality in Xingyun Lake basin changed little and stabilized at a medium level. The ecological environment quality deteriorated in flat land along lakes and mountain valleys， but improved in marginal mountains. The main land use types in this watershed were arable land and forest land， and land use change responded to the variation of ecological environment quality. After 2000， the indexes of greenness and humidity were becoming more and more important for the improvement of ecological environment quality. The spatial distribution of ecological environment quality was clustered， the high-high accumulation area was gradually transferred from the flat land along lakes to mountainous areas， while the low-low accumulation area was mainly distributed in mountains where rocky desertification was serious. |
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