干旱区生态环境知识资源中心(Arid): 宁夏19992009年土地荒漠化演变影响因素分析

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	宁夏19992009年土地荒漠化演变影响因素分析
其他题名	Analysis on the Factors Influencing the Evolution of Desertification in Ningxia of China from 1999 to 2009
	王占军; 邱新华; 唐志海; 石海霞; 赵婧婧
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2013
卷号	33 期号:2 页码:325-333
中文摘要	利用宁夏1999、2004年和2009年荒漠化土地监测数据,对宁夏土地荒漠化的演变趋势和影响因素进行分析。结果表明:19992009年间,宁夏荒漠化土地面积呈递减态势,由320.74万hm~2减少至289.88万hm~2,逆转趋势明显。其中水蚀荒漠化和风蚀荒漠化土地明显减少,风蚀荒漠化土地面积由151.91万hm~2减少至134.58万hm~2,水蚀荒漠化土地面积由165.72万hm~2减少至148.97万hm~2;盐渍化土地明显增加,由3.11万hm~2增加至6.33万hm~2。荒漠化程度明显减轻,重度、中度荒漠化土地面积明显减少,轻度荒漠化土地明显增加。重度荒漠化土地面积由100.98万hm~2减少至27.57万hm~2,中度荒漠化土地面积由142.70万hm~2减少至138.38万hm~2,轻度荒漠化土地面积由71.0万hm~2增加到117.08万hm~2。荒漠化地区植被状况进一步改善,植被盖度逐渐增加。国家政策项目支持、荒漠化土地综合开发利用、各类生态保护政策机制的制定完善和社会力量参与荒漠化防治等人为因素对荒漠化逆转产生决定性的影响,气候变化所产生的不利影响被上述因素所产生的有利影响所抵消;人口压力、历史人为不合理活动和水资源低效利用等人为因素在一定程度上减缓了宁夏荒漠化的逆转趋势,将成为宁夏未来荒漠化防治过程中需要重点克服的不利因素。
英文摘要	With the desertification monitoring data in 1999, 2004 and 2009 in Ningxia, we analyzed the evolution of the desertification and its influencing factors in Ningxia. The area of desertification land decreased from 3. 207410~6 hm~2 in 1999 to 2. 898810~6 hm~2 in 2009 and reversed obviously during 1999-2009. The area of wind-erosion desertification land decreased from 1. 519110~6 hm~2 in 1999 to 1. 345810~6 hm~2 in 2009, and the area of water-erosion desertification land reduced from 1. 657210~6 hm~2 in 1999 to 1. 489710~6 hm~2 in 2009, while the area of saline desertification land increased from 3. 11104 hm~2 in 1999 to 6. 33 104 hm~2 in 2009. The area of severe and moderate desertification land decreased obviously from 1. 0098* 10~6 hm~2 and 1. 427010~6 hm~2 respectively in 1999 to 2. 75710~5 hm~2 and 1. 383810~6 hm~2 respectively in 2009, while the area of slight desertification land increased obviously from 7. 1010~5 hm~2 in 1999 to 1. 1708 *10~6 hm~2 in 2009, so desertification degree weakened obviously. In desertification regions, vegetation cover was improved further and vegetation coverage increased. Among the climate and human factors affecting the evolution trend of desertification, the reversion of desertification was influenced decisively by national policy, comprehensive development and utilization project, establishing and perfecting of various ecological protection measurement and mechanism, public participating in combating desertification, and so on. The negative effect produced by climate change was offset by the positive effect of these human factors. However, the reversion of desertification was slowed down to some extent by the population pressure, the human unreasonable activities in historical period, the inefficient utilization of water resources, and so on. These human factors are the unfavorable factors in combating desertification, which needed to be overcome in the prevention and control of desertification in Ningxia in the future.
中文关键词	荒漠化 ; 演变 ; 影响因素 ; 宁夏
英文关键词	desertification evolution influencing factors Ningxia
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4804612
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230576
作者单位	宁夏回族自治区生态建设规划办公室, 银川, 宁夏 750001, 中国
推荐引用方式 GB/T 7714	王占军,邱新华,唐志海,等. 宁夏19992009年土地荒漠化演变影响因素分析[J],2013,33(2):325-333.
APA	王占军,邱新华,唐志海,石海霞,&赵婧婧.(2013).宁夏19992009年土地荒漠化演变影响因素分析.中国沙漠,33(2),325-333.
MLA	王占军,et al."宁夏19992009年土地荒漠化演变影响因素分析".中国沙漠 33.2(2013):325-333.