首页|1980年以来黄河内蒙古段十大孔兑流域土地利用变化时空特征

1980年以来黄河内蒙古段十大孔兑流域土地利用变化时空特征

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
研究黄河内蒙古段十大孔兑(以下简称十大孔兑)流域土地利用变化，对于区域生态环境建设和水土保持效果评价有重要意义。根据1980年、1998年、2010年3期遥感影像解译的土地利用数据，采用土地利用动态变化和土地利用转移矩阵，系统分析了十大孔兑流域1980年以来的土地利用变化时空特征。结果表明：研究区以耕地、草地和未利用地为主要土地利用类型，1980年以来草地面积逐渐增加，未利用地面积逐渐减少，1998年-2010年较1980年-1998年的土地利用变化幅度和变化速度提高。1980年-1998年和1998年-2010年，土地利用转移方向主要是未利用地向低、中覆盖草地转化，低覆盖草地向中、高覆盖草地转化，中覆盖草地向高覆盖草地转化，该转化主要分布在流域的上中游，以流域东部和西部最明显。1980年-1998年间低覆盖草地向中、高覆盖草地转化比例较高，1998年-2010年间未利用地向低、中覆盖草地转化比例较高。分析认为，1980年以来十大孔兑流域城镇化水平提高，林草水保措施力度增强、成效显著，区域生态环境改善，特别是国家实施“退耕还林(草)”生态修复政策后，生态环境改善效果更为突出。
Spatial-temporal characteristics of land use changes in the ten tributaries of Yellow River in Inner-Mongolia since 1980
The study of the land use changes in the ten t ributaries of Yellow River in Inner-Mongolia is of great significance for not only the construction of regional ecological environment, but also the evaluat ion of w ater and soil conservation effect s. Based on t he land use data interpret ed from remote sensing images in 1980, 1998 and 2010, the spatial and temporal variat ion of land use in the ten tributaries since 1980 w as analyzed from the land use dynamic change and the direction of land use transforma-tion. Some conclusions can be draw n as follows: First, Arable land, grassland and unused land w ere the major land use t ypes in the t en tributaries. T he area of grassland gradually increased, w hile unused land decreased since 1980. The rate and speed of var-iation were higher during 1998-2010 than 1980-1998. Second, during 1980-1998 and 1998-2010, the directions of land use change were mainly as follows: unused land w as converted to low and m iddle coverage grassland, low coverage grassland to m iddle and high coverage grassland, middle coverage grassland to high coverage grassland. The area of conversion were mainly distributed in t he upper and middle basin of the ten t ributaries. The largest area of conversion of low coverage grassland to middle and high coverage grassland was obtained during 1980-1998. While the largest unused land to low and middle coverage grassland was ob-served during 1998-2010. The urbanization level had grown, w ater and soil conservation of forest and grass had been enhanced, regional ecological environment had been im proved in the ten tribut aries since 1980, and more outstanding improvement effects were found after the launch of bioenvironmental recovering policy of Grain to Green Program ( GTGP) in 1999.

land use changespatial-temporal characterist icswater and soil conservation of forest and grassremote sensing in-terpretationthe ten tribut aries

刘晓林、杨胜天、周旭、管亚兵、王志伟、陈珂

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北京师范大学 地理学与遥感科学学院，遥感科学国家重点实验室，环境遥感与数字城市北京市重点实验室，北京 100875

贵州师范大学 地理与环境科学学院，贵阳 550001

土地利用 时空特征 林草水保措施 遥感解译 十大孔兑

“十二五”国家科技支撑计划课题水利部公益性行业科研专项经费项目中央高校基本科研业务费专项

2012BAB02B00201101037

2016

10.13476/j.cnki.nsbdqk.2016.01.005

南水北调与水利科技(中英文)
河北省水利科学研究院

南水北调与水利科技(中英文)

CSTPCDCSCD北大核心
影响因子：0.772
ISSN：2096-8086
年,卷(期)：2016.(1)
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