干旱区生态环境知识资源中心(Arid): 广西大石山区农业干旱成因分析及脆弱性评价

Arid

	广西大石山区农业干旱成因分析及脆弱性评价
其他题名	Analysis of agricultural drought causes and assessment of its vulnerability in the Dashi mountainous area of Guangxi
	康永辉 1; 解建仓 1; 黄伟军 2; 王宝红 2
来源期刊	自然灾害学报
ISSN	1004-4574
出版年	2014
卷号	23 期号:3 页码:24-32
中文摘要	广西大石山区水资源丰富,降雨量大,但干旱灾害频发,灾情呈加重趋势。从坡耕地面积比、水土流失、降雨时空分布、控制性水源工程、水资源利用率和抗旱能力等方面对其进行了成因分析。用基于熵权的模糊综合评价法对承灾体脆弱性进行了分析,从自然生境、社会、经济三个方面选取了17个评价指标,对其干旱脆弱度进行了评估。结果表明:广西大石山区的干旱脆弱度大小与旱灾风险指数大小呈正相关关系,旱灾风险指数大的其干旱脆弱度一般较重,而影响其干旱脆弱度大小的主要指标包括岩溶面积比、土地石漠化率、坡耕地面积比、林草覆盖率、农田灌溉率、人均有效库容、抗旱应急送水设施规模和城镇化水平等,阐明了广西大石山区的干旱成因,为降低该区域的干旱脆弱度,增强抵御旱灾风险能力,有针对性地采取治理措施和对策提供了依据。
英文摘要	The Dashi mountainous area of Guangxi is rich in water resources and high in rainfall,but drought disasters occur frequently and are getting worse. This paper analyzed the causes from the aspects of the area ratio of slope farmland,soil erosion,the spatiotemporal distribution of rainfall,controllability water projects,utilization ratio of water resources,and drought resistance capacity,etc. Using 17 evaluation indices selected from three aspects of natural,social and economic environment,the vulnerability of the hazard-bearing body was analyzed using fuzzy comprehensive evaluation method based on entropy,and the drought vulnerability in the study area was assessed. Results show that,drought vulnerability size and drought risk index size are positively correlated in the Guangxi’ Dashi mountainous area,i. e.,drought vulnerability is generally more severe if drought risk index is larger. Main indices which affect drought vulnerability include karst area ratio,land desertification rate,slope farmland ratio,forest coverage rate,irrigation rate,effective reservoir capacity per capita,drought emergency water supply facility size and level of urbanization etc. This study explored the drought causes of Guangxis Dashi mountainous area,and provided a basis for taking effective control measures,reducing the vulnerability of drought and strengthening the drought risk resistant ability.
中文关键词	广西大石山区 ; 水土流失 ; 石漠化 ; 脆弱性 ; 熵权 ; 模糊综合评价
英文关键词	Dashi mountainous area in Guangxi Zhuang Autonomous Region soil erosion rocky desertification vulnerability entropy weight fuzzy comprehensive evaluation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:5195602
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232317
作者单位	1.西安理工大学水利水电学院, 西安, 陕西 710048, 中国; 2.广西水利电力职业技术学院, 南宁, 广西 530023, 中国
推荐引用方式 GB/T 7714	康永辉,解建仓,黄伟军,等. 广西大石山区农业干旱成因分析及脆弱性评价[J],2014,23(3):24-32.
APA	康永辉,解建仓,黄伟军,&王宝红.(2014).广西大石山区农业干旱成因分析及脆弱性评价.自然灾害学报,23(3),24-32.
MLA	康永辉,et al."广西大石山区农业干旱成因分析及脆弱性评价".自然灾害学报 23.3(2014):24-32.