干旱区生态环境知识资源中心(Arid): 黄河首曲-玛曲县高寒草甸沙化动态演变趋势及其驱动因子定量分析

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	黄河首曲-玛曲县高寒草甸沙化动态演变趋势及其驱动因子定量分析
其他题名	Desertification dynamic change trend and quantitative analysis of driving factors of alpine meadow in Maqu County in the First Meander of the Yellow River
	陈文业 1; 张瑾 1; 戚登臣 1; 赵明 1; 张继强 1; 李广宇 1; 魏强 1; 王芳 1; 朱丽 1; 刘振恒 3; 孙飞达 ; 康建军 1; 罗文莉 1
来源期刊	草业学报
ISSN	1004-5759
出版年	2013
卷号	22 期号:2 页码:11-21
中文摘要	基于遥感和GIS技术,选取1975、1990、1994、2000、2005和2009年6期遥感影像,综合该区地形图、各期沙化监测资料以及土地利用图等资料,采用遥感动态监测、数据解译和野外调查相结合的研究方法,对甘肃省玛曲县近35a来高寒草甸沙化的时空演变过程及其发展趋势进行了解析,并在此基础上,运用灰色关联度分析法,对其沙化驱动因素进行定量辨识和贡献率分析。结果表明,1)近35a来研究区沙化在时间上表现为沙化土地面积处于持续扩张的态势,其扩展经历了缓慢增加-略有减少-快速增加的过程。其中流动沙地(丘)呈现缓慢上升-急速上升-逆转的变化趋势;半固定沙地(丘)呈现缓慢上升-急速上升-急速逆转的变化趋势;固定沙地(丘)呈现缓慢上升-逆转-急速上升的变化趋势。在空间上表现为沙化土地的分布区域呈沿黄河沿岸不断扩展态势。在沙化程度上表现为波动减弱趋势。2)各驱动因子与沙化土地总面积的关联排序为:国民生产总值>羊只存栏数>人口数量>年均气温>畜牧业总产值>年均降水量>大牲畜存栏数>年均蒸发量>牛羊肉总产量>干燥度指数>黄河径流量>年均风速;主要自然因素和人为因素对沙化土地总面积的驱动力比重分别为40.43%和59.57%。说明气候变暖的异常扰动导致草场沙化,为诱导和次要因素,人类不合理的活动加速了土地沙化的发展,为强化和主导因素。研究区草地沙化的扩展是2类因子共同作用和影响的综合过程。
英文摘要	Based on the remote sensing and GIS technology and the methods of remote sensing dynamic monitoring, data interpretation combined with field investigation, the desertification space-time evolution process and its development trend of Maqu alpine meadow (Gansu) in recent 35 years was analyzed according to the selection of remote sensing image in 1975, 1990, 1994, 2000, 2005 and 2009, and integrated the topographic map, desertification monitoring data of each period and data of land use map. Based on this basis, the desertification drive factors are quantitatively identified and analyzed on contribution rate according to the grey correlation degree analysis method. The results show that, 1) the desertification in the research area showed a continuous expansion trend followed by time changes, and this trend developed a process of slow developmentslight decreasefast development. Mobile sand dunes developed a process of low developmentrapid developmentreverse, semi-fixed sand dunes developed a process of low developmentrapid developmentrapid reverse and fixed sand dunes showed a trend of slow developmentreverserapid development. The spatial pattern of the desertification land distribution area showed an expanding situation and the desertification degree showed a trend of reducing volatility along the Yellow River. 2) the correlation order of driving factors and desertification land area is: GNP>number of sheep of each year>population>mean annual temperature>animal output value>mean annual precipitation>number of large animals of each year>mean annual evaporation>beef and mutton production>aridity index>runoff volume of the Yellow River>average wind speed; the driving force natural and human factors on the proportion of desertification land area were 40.43% and 59.57%, respectively. These results showed that abnormal disturbance of climatic warming was induced and the secondary factors which lead to grassland desertification, human irrational activities was the strengthened and leading factors which accelerated the land desertification development and the expansion of grassland desertification in the research area is the integrated process which is combined with action and influence of the two kinds of factors.
中文关键词	黄河首曲 ; 玛曲 ; 高寒草甸 ; 沙化 ; 动态演变 ; 驱动因子
英文关键词	the First Meander of the Yellow River Maqu alpine meadow desertification dynamic change trend driving factor
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4810093
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229289
作者单位	1.甘肃省林业科学研究院, 兰州, 甘肃 730020, 中国; 2.甘肃敦煌西湖国家级自然保护区管理局, 敦煌, 甘肃 736200, 中国; 3.甘肃省玛曲县草原总站, 玛曲, 甘肃 747300, 中国
推荐引用方式 GB/T 7714	陈文业,张瑾,戚登臣,等. 黄河首曲-玛曲县高寒草甸沙化动态演变趋势及其驱动因子定量分析[J],2013,22(2):11-21.
APA	陈文业.,张瑾.,戚登臣.,赵明.,张继强.,...&罗文莉.(2013).黄河首曲-玛曲县高寒草甸沙化动态演变趋势及其驱动因子定量分析.草业学报,22(2),11-21.
MLA	陈文业,et al."黄河首曲-玛曲县高寒草甸沙化动态演变趋势及其驱动因子定量分析".草业学报 22.2(2013):11-21.