摘要
以博斯腾湖小湖区为研究区,采用5个不同时期的Landsat影像为主要数据源,运用景观转换系数和重心迁移模型对1996-2015年研究区湿地景观变化进行分析,以揭示博斯腾湖小湖区的景观变化类型与景观的重心变化特征。结果显示：（1）近20年有地表水的湿地与旱地的重心变化强烈,1996-2001年有地表水的湿地重心变化达到最大值,向西南迁移10.57km,旱地重心变化也达到最大值,向东南迁移8.78km。（2）近20年明水与旱地的重心迁移呈顺时针向心偏移。（3）稳定型景观是研究区的主要构成类型,占总类型的89.72%,非稳定型景观保持在总类型的11.28%,研究区湿地景观变化逐渐呈稳定趋势。研究表明,气候因素、湖泊水位和区域湿地保护措施是影响研究区湿地景观变化的主要驱动因素。
The wetland landscape changes of small lakes of Bosten Lake were analyzed from 1996 to 2015with adoption of landscape conversion coefficient and the model of center of gravity migration,with small lakes of Bosten Lake as research area and adopting the Landsat images in five different periods as main data source.Research results show that：（1）the center of gravity of wetland with surface water and dry land changes dramatically in nearly 20 years,and between 1996 and 2001.The change of center of gravity of wetland with surface water reached the highest value and moved by 10.57 km to the southwest.The maximum change value of center of gravity for dry land appeared between 2001 and 2006and moved by 8.78 km to the southwest.（2）In nearly 20 years,the water around wetland of small lake area was decreasing gradually,dry land expanded to inside annually and the center of gravity migration of water and dry land moved in a clockwise direction.（3）Stable landscape was the main composition type of study area.In nearly 20 years,accounting for 89.72% of the total types and nonstable landscape in 11.28% of the total type.The wetland landscape change of small lakes of Bosten Lake presented a stable trend gradually.Climatic factors,lake level and human factors were main factors that influence of wetland landscape change in the study area.
出处
《西北植物学报》
CAS
CSCD
北大核心
2016年第12期2533-2540,共8页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家自然科学基金(31360039
41661047)
新疆师范大学地理学博士点支撑学科开放课题(XJNU-DL-201514)
新疆维吾尔自治区草原总站专项资金
关键词
景观变化
景观转换系数
重心迁移模型
Landsat影像
博斯腾湖小湖区
landscape change
landscape conversion coefficient
the model of center of gravity migration
Landsat images
Small lakes of Bosten Lake
