| 科尔沁沙地水域景观格局的时空动态——以奈曼旗为例 |
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| 引用本文： | 连杰,赵学勇,左小安,常学礼. 科尔沁沙地水域景观格局的时空动态——以奈曼旗为例[J]. 中国沙漠, 2012, 32(1): 210-218 |
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| 作者姓名： | 连杰 赵学勇 左小安 常学礼 |
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| 作者单位： | 1.中国科学院寒区旱区环境与工程研究所 奈曼沙漠化研究站, 甘肃 兰州 730000； 2.中国科学院研究生院, 北京 100049； 3.鲁东大学 地理与规划学院, 山东 烟台 264025 |
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| 基金项目： | 国家重点基础研究发展计划项目，国家自然科学基金项目，内蒙科技厅项目 |
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| 摘 要： | 对位于科尔沁沙地腹地的奈曼旗近30 a来土地利用/覆被信息中水域类型的景观格局指数进行了时空组合分析。结果表明,大尺度研究区（8 135.15 km2）1975-1985年水体与湿地斑块的类型面积和数量增加,形状趋于复杂；1985-2005年斑块类型面积和数量大幅减少,形状趋于简单；中尺度研究区（892.74 km2）水体与湿地斑块的类型面积在波动中减小,湿地斑块数量减少和形状简单化的转折期相对较短且滞后于水体。小尺度研究区（110.42 km2）集中了人畜以及上游活动的干扰,水体与湿地斑块仅在个别时期出现,难以连续存在。在各尺度研究区内,河漫滩斑块类型面积变化趋势各异,数量和形状复杂程度都相对稳定；且随着研究区增大形状更加不规则。水域类型的景观格局虽然在不同时空上的动态过程存在差异性,但其发展方向具有相同趋势,发展过程受到气候波动和人类活动干扰的共同影响。
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| 关 键 词： | 科尔沁沙地 时间序列 空间幅度 水域 景观格局 |
| 收稿时间： | 2011-04-28; |
| 修稿时间： | 2011-07-20 |
Dynamics of Landscape Pattern of Water Areas in Horqin Sandy Land,China-A case study in Naiman Banner of Inner Mongolia |
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| LIAN Jie,ZHAO Xue-yong,ZUO Xiao-an,CHANG Xue-li. Dynamics of Landscape Pattern of Water Areas in Horqin Sandy Land,China-A case study in Naiman Banner of Inner Mongolia[J]. ournal of Desert Research, 2012, 32(1): 210-218 |
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| Authors: | LIAN Jie ZHAO Xue-yong ZUO Xiao-an CHANG Xue-li |
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| Affiliation: | 1.Naiman Desertification Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3.Institute of Geography and Planning, Ludong University, Yantai 264025, Shandong, China |
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| Abstract: | Analysis on dynamics of landscape metrics of water areas at different spatial scales in Horqin Sandy Land showed that landscape pattern of water areas changed in a same trend in recent 30 years,though dynamic process had disparity in time series and spatial extents.At a large scale of 8 135.15 km2,number and areas of lake and wetland patches increased from year 1975 to 1985,however,their Class Areas(CA),Patch Number(NP) and Landscape Shape Index(LSI) decreased from 1985 to 2005;at a medium scale of 892.74 km2,the areas of lake and wetland patches decreased with fluctuation,and the turning period of wetland patches number decreasing and shape simplification was short and delayed compared with lake’s.Due to frequent disturbance of people,livestock and impact from upper reaches,lake and wetland patches couldn’t maintain in the whole time series at a small scale of 110.42 km2.Beach patch’s NP and LSI were relatively stable in the recent 30 years at the 3 spatial scales,although CA had diverse process,and patch shapes became less regular at larger scale.Climatic fluctuation and human impacts drove this process. |
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| Keywords: | Horqin Sandy Land time series spatial extent water areas landscape pattern |
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