干旱区生态环境知识资源中心(Arid): 近20a广西石漠化区植被覆盖度与气候变化和农村经济发展的耦合关系

Arid

	近20a广西石漠化区植被覆盖度与气候变化和农村经济发展的耦合关系
其他题名	Vegetation Cover and Climate Change and Rural Economic Development in Relations during Last 20 Years in Karst Region of Guangxi, China
	马华 1; 王云琦 1; 王力 2; 王益坤 3
来源期刊	山地学报
ISSN	1008-2786
出版年	2014
卷号	32 期号:1 页码:38-45
中文摘要	通过研究广西石漠化区农村经济社会因素、生态政策、气候变化对石漠化治理恢复进程的影响,得出影响植被变化的主要和次要因素及其对植被变化的贡献率,选取了反映植被盖度的NDVI值,以及与石漠化地区植被覆盖度有关的9个因子:农村人口、粮食产量、农村人均纯收入、牲畜量、耕地面积、森林封禁面积、造林面积、年均温度、年均降水量.基于1991-2010年中国统计年鉴资料,以相关性分析和主成分分析法对植被覆盖度的变化进行了分阶段的分析,得出各主成分的贡献率.另外,对广西的气候变化、石漠化状况以及农村经济状况进行了分析.结果表明:1.农村经济社会、生态政策等人为因素是石漠化发展、逆转的主要影响因子,气候变化则是次要影响因子.2005-2010年,人为活动、气候变化对石漠化的影响贡献率分别为64.115%,23.355%.2.近20 a广西气候呈干暖化趋势,石漠化面积减少显著,但仍存在较大面积的潜在石漠化土地,农村纯收入虽逐年增加但处于全国较低水平.由此可知,虽然人为活动与气候因素共同作用影响着石漠化地区植被变化,但目前广西石漠化地区植被变化受农村人口活跃程度、农村经济生产活动以及生态政策的实施力度影响很大.
英文摘要	In China,Guangxi is one of typical representatives in Karst desertification regions. The research were made to learn about the effects of the climate change, rural social economic factors and ecological policies on the processing of controlling Karst desertification,aiming to learn the major factors and secondary factors of vegetation recovery in Guangxi. Correlation analysis and principal component analysis (PCA) were used to analyze NDVI which indicate the change of Karst desertification and nine factors relating to vegetation cover of Karst desertification in Guangxi in four stages. The nine factors, including rural population,grain yield, rural net income, livestock, farm land area, forestry area forbid, reforestation area, temperature and precipitation,have come from Guangxi statistics ranges from 1991 to 2010. The results showed that rural social economic factors and ecological policies were the main factors to controlling Karst desertification,climate factor were the secondary cause. In the period of 2005 to 2010, the contribution of them were 64. 115%,23. 355%, respectively. During twenty years, the climate change tended to drying and warming, the area of Karst desertification in Guangxi decreased obviously,but the potential Karst desertification areas still exist. Therefore, the rural net income increased every year, it still stood in a low level. These indicated that human activity and climate change both take effects on the development and reverse of Karst desertification,but the vegetation change has been much influenced by rural population, rural productive activities and ecological policy.
中文关键词	石漠化地区 ; 植被变化 ; 气候变化 ; 农村经济发展 ; 主成分
英文关键词	karst desertification district vegetation recovery climate change rural economic development principal component analysis (PCA)
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY ; ENVIRONMENTAL SCIENCES
WOS研究方向	Geology ; Environmental Sciences & Ecology
CSCD记录号	CSCD:5135236
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231538
作者单位	1.北京林业大学水土保持学院, 北京 100083, 中国; 2.广西壮族自治区桂林市平乐镇林业工作站, 桂林, 广西 542400, 中国; 3.广西壮族自治区桂林市平乐县林业局, 桂林, 广西 542400, 中国
推荐引用方式 GB/T 7714	马华,王云琦,王力,等. 近20a广西石漠化区植被覆盖度与气候变化和农村经济发展的耦合关系[J]. 北京林业大学,2014,32(1):38-45.
APA	马华,王云琦,王力,&王益坤.(2014).近20a广西石漠化区植被覆盖度与气候变化和农村经济发展的耦合关系.山地学报,32(1),38-45.
MLA	马华,et al."近20a广西石漠化区植被覆盖度与气候变化和农村经济发展的耦合关系".山地学报 32.1(2014):38-45.