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| 近40年洞庭湖区地表景观演变及气候潜在响应特征 |
| Landscape Evolution and Its Potential Response to Climate in the Dongting Lake Area in Recent 40 Years |
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| DOI： |
| 中文关键词: 土地利用 景观格局 气候响应 遥感 洞庭湖区 |
| 英文关键词: Land use Landscape pattern Climate response Remote sensing The Dongting Lake area |
| 基金项目:国家自然科学基金资助项目（41871317，41501034）；湖南省自然科学基金资助项目（2018JJ2498）；中南大学研究生自主探索创新基金资助项目（2020zzts654） |
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| 中文摘要: |
| 通过耦合多源遥感数据，研究1980—2015年洞庭湖区地表景观格局演变及其潜在气候响应特征。结果表明，洞庭湖区土地利用类型以耕地为主，占总面积63.67%；水体次之，占23.75%；草地最少,占0.15%。1980年以来耕地面积剧烈减少，减少342.71 km2；建设用地和水体面积呈上升趋势，分别增加278.16 km2和132.55 km2；土地利用转化方式以耕地向建设用地转化为主，转化面积232.70 km2；区域地表景观进一步破碎与复杂化。相关性分析表明，土地利用变化与降水相关性较弱，而与气温呈较显著的相关关系。此外，区域景观格局演变与气温上升呈较强的正相关关系。 |
| 英文摘要: |
| The study adopted the multi source remote sensing data from 1980 to 2015 to analyze the characteristics of landscape evolution and its potential response to climate in the Dongting Lake area. Results showed that cultivated land was the main land use type, accounting for 63.67% of the total area, water body took second place, accounting for 23.75%, and grassland was the least, accounting for 0.15%. Since 1980, the agricultural acreage drastically decreased by 342.71 km2, while the acreage of construction land and water body increased by 278.16 km2 and 132.55 km2, respectively. The main transformation of land use type was cultivated land to construction land with the area of 232.70 km2. The regional surface landscape was further fragmented and complex. Correlation analysis showed that the change of land use had poor correlation with precipitation and good correlation with air temperature. In addition, there was a strong positive correlation between the evolution of regional landscape pattern and the increase of air temperature. |
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