摘要
针对绿洲城市城乡间生态位势差异不断扩大,稀缺生态资源尤其是水资源不断向城市集聚,农业用地面临的生态压力等问题,运用景观生态学及流域生态学理论,基于遥感影像解译及信息识别技术,用景观指数综合分析方法,从空间扩张类型、方向、重心及趋势等方面研究了玛纳斯河流域人工绿洲空间扩张规律。结果表明:玛纳斯河流域农业用地总体仍呈缓慢扩张趋势,扩张模式以填充式空间扩张为主,边缘式和飞地式扩张为辅,空间异质性明显,景观形态趋于整体紧凑,扩张重心向西北方向转移;建设用地呈迅速扩张趋势,扩张模式以飞地式扩张模式为主,填充式和边缘式为辅,空间扩张重心向东北转移,具有快速城镇化初级阶段的典型特征;人工绿洲平均斑块扩张指数(MEI)和面积加权平均斑块扩张指数(AWMEI)都呈明显上升趋势,建设用地迅速扩张是玛纳斯河流域城市扩张的主体。
In view of the expansion of the ecological potential difference between urban and rural areas in Oasis City,the scarce ecological resources,especially the accumulation of water resources to the city,and the ecological pressure of agricultural land,based on the ecology of landscape ecology and watershed ecology,the remote sensing image interpretation and information recognition technology and the landscape index comprehensive analysis method,the spatial expansion of the artificial oasis in the Manasi river basin was studied in terms of the type,direction,center of gravity and trend of the spatial expansion.The results show that the agricultural land in the Mahe river basin tends to expand slowly.The expansion mode is mainly filled with space expansion,the fringe and the enclave expansion are supplemented,the spatial heterogeneity is obvious,the landscape shape tends to overall compact,the expansion of the center of gravity is transferred to the northwest direction.The construction land has a rapid expansion trend,and the expansion mode is mainly composed of the expansion mode,the filling type and the edge type.The spatial expansion center is shifted to the northeast and has the typical characteristics of the early stage of rapid urbanization.The average plaque dilatation index（MEI）and the area weighted average plaque expansion index（AWMEI）of artificial oasis show a significant upward trend.The rapid expansion of construction land is the main body of urban expansion in Mahe river basin.
作者
王莉红
张军民
WANG Lihong;ZHANG Junmin(College of Sciences,Shihezi University,Shihezi,Xinjiang 832000,Chin)
出处
《中国科技论文》
CAS
北大核心
2018年第9期1072-1077,共6页
China Sciencepaper
基金
国家自然科学基金资助项目(41361025)
关键词
玛纳斯河流域
空间扩张
重心转移
景观扩张指数
Manasi river basin
spatial expansion
center of gravity transfer
landscape expansion index
