|
| 基于PLUS-InVEST模型的阳宗海流域生境质量时空演变及多情景模拟 |
| Spatiotemporal Evolution and Multi scenario Simulation of Habitat Quality in Yangzonghai Lake Basin Based on PLUS InVEST Model |
| |
| DOI: |
| 中文关键词: 生境质量 时空演变特征 PLUS模型 InVEST模型 多情景模拟 阳宗海流域 |
| 英文关键词: Habitat quality Characteristics of spatiotemporal evolution PLUS model InVESTmodel Multi scenario simulation Yangzonghai Lake basin |
| 基金项目:国家自然科学地区基金资助项目(42161067,42261074) |
|
| 摘要点击次数: 867 |
| 全文下载次数: 114 |
| 中文摘要: |
| 以阳宗海流域为研究区,基于1990—2020年土地利用数据,采用地理信息图谱法、PLUS与InVEST模型分析阳宗海流域生境质量时空变化特征,并预测2030年自然发展、耕地保护及生态保护情景下的生境质量。结果表明,1990—2020年阳宗海流域土地利用类型以稳定变化为主,林地面积占比最大,主要由耕地和草地转入。阳宗海流域1990年、2000年、2010年和2020年生境质量指数均值分别为0602、0639、0632和0611,呈现先增后降的变化趋势,大部分区域的生境质量均处于优等级状态,空间分布以阳宗海为中心呈现“高〖CD*2〗低〖CD*2〗高”的环状分布。与2020年相比,2030年自然发展、耕地保护和生态保护情景下生境质量指数均值都存在小幅度提升,增值分别为0009、0013和0014,其中生态保护情景下生境质量由低等级向高等级的转移比较明显。 |
| 英文摘要: |
| Taking Yangzonghai Lake basin as the research area, based on the land use data from 1990 to 2020, this study analyzed the spatiotemporal variation characteristics of habitat quality in Yangzonghai Lake basin by using geographic information mapping method, PLUS and InVEST models, and predicted the habitat quality under the scenarios of natural development, farmland protection and ecological conservation in 2030. The results indicated that from 1990 to 2020, the land use types in Yangzonghai Lake basin changed steadily. The area of forestland accounted for the largest proportion, mainly expanded from farmland and grassland. The average values of habitat quality index of Yangzonghai Lake basin in 1990, 2000, 2010, and 2020 were 0.602, 0.639, 0.632, and 0.611 respectively, showing a trend of increasing first and then decreasing. The habitat quality in most areas was rated as excellent. The spatial distribution presented a “high low high” annular pattern centered on Yangzonghai Lake. Compared with 2020, the average habitat quality index in 2030 under the scenarios of natural development, farmland protection and ecological conservation would increase slightly, by 0.009, 0.013, and 0.014 respectively. 〖GK!87mm〗The habitat quality would shift markedly from low to high grades under the ecological conservation scenario. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |