1976年以来北洛河流域土地利用变化对人类活动程度的响应

  本文关键词：1976年以来北洛河流域土地利用变化对人类活动程度的响应，由笔耕文化传播整理发布。

1976年以来北洛河流域土地利用变化对人类活动程度的响应

Response analysis of land use change to the degree of human activities in Beiluo River basin since 1976

[1] [2] [3] [4] [5] [6]

WU Linna^1＇2, YANG Shengtian^1, LIU Xiaoyan^3, LUO Ya^1＇4, ZHOU XU^1＇5, ZHAO Haigen^1 （I. State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal

[1]遥感科学国家重点实验室,北京师范大学地理学与遥感科学学院,环境遥感与数字城市北京市重点实验室,北京100875:; [2]贵州大学资源与环境工程学院,贵阳550025; [3]黄河水利委员会,郑州450003; [4]贵州师范大学地理与环境科学学院,贵阳550001; [5]西华师范大学国土资源学院,四川南充637009

文章摘要：土地利用变化是反映人类活动程度的重要因子，分析土地利用时空变化规律，是揭示人类活动程度的有效方式。在遥感和地理信息系统技术的支持下，采用人机交互图像处理方法获取北洛河流域1976年、1998年和2010年土地利用数据；从土地利用变化速度、转移方向和土地利用程度方面，全面分析1976年以来北洛河流域人类活动作用下的土地利用时空变化规律。结果表明：①1976．1998年和1998-2010年间北洛河流域综合土地利用动态度从0．61增加到6．66；耕地和草地面积减少，，减小速度分别从2．00％和2．69％增加到26．20％和23．33％，林地和城乡工矿居民用地面积增加，前者增加速度从5．93％增到59．68％，后者增加速度从6．59％减小到3．52％。②两个时段土地利用类型转移方向都呈现出耕地和草地主要转化为林地，少部分耕地转化为城乡工矿居民用地的特点；③流域各县土地利用程度综合变化指数从-2-1之间，扩大为．27～4之间。证明流域内人类活动对自然环境的影响逐渐增大；主要表现为耕地、草地、林地和城乡工矿居民用地的相互转化；影响区域主要分布在流域上游吴旗县、富县、甘泉、黄陵县和洛川县；而人类活动作用导致的林地面积增大程度远远大于耕地和草地面积减小和城乡工矿居民用地面积增加程度。

Abstr：Land use change as an important factor reflects the degree of human activities. Analysis of spatial-temporal change of land use is an effective way to reveal the degree of land use change. Based on the remote sensing and GIS, the authors used man computer interactive image processing methods to acquire the land use data in 1976, 1998 and 2010, and analyzed the spatial-temporal variation of land use in Beiluo River basin from the rate of land use change, the direction of land use transformation, and the degree of land use. The results can be obtained as follows. （1） The integrated dynamic degree of land use increased from 0.61 during 1976-1998 to 6.66 during 1998-2010, the area of arable land and grassland decreased gradually, the rate was increased from 2.00% and 2.69% to 26.20% and 23.33% respectively, while the area of forest land and residential land increased gradually, the rate of the former increased from 5.93% during 1976-1998 to 59.68% during 1998-2010, and that of the latter decreased from 6.59% during 1976-1998 to 3.52% during 1998-2010. （2） The direction of land use change showed similar characteristics during the two periods. Forest land was converted from arable land and grassland, and a small part of residential land was converted from arable land. （3） The integrated degree of land use change ranged from-2-1 during 1976-1998 to -27-4 during 1998-2010. The authors proved that the impact of human activities on the natural environmental showed increasing trends, that arable land, grassland, forestland and residential land were mainly converted, that affected areas were mainly distributed in the upper basin, i.e., Wuqi county, Fuxian county, Ganquan county, Huangling county and Luochuan

文章关键词：

Keyword：:land use change, human activities Beiluo River basin

课题项目：国家“十二五”科技支撑计划课题（2012BAB02800）;水利部公益项目（201101037）;中央高校基本科研业务费专项[Foundation：NationalKeyTechnologiesR＆DProgram,No.2012BAB02800;PublicWelfareFoundationoftheMinistryofWaterResourcesofChina,No.201101037;TheFundamentalResearchFundsfortheCentralUniversities]

  本文关键词：1976年以来北洛河流域土地利用变化对人类活动程度的响应，由笔耕文化传播整理发布。