干旱区生态环境知识资源中心(Arid): 基于GIS的广西西江流域石漠化动态分析

Arid

	基于GIS的广西西江流域石漠化动态分析
其他题名	Dynamic variation analysis of rocky desertification in Xijiang River Basin of Guangxi based on GIS
	朱梓弘 1; 朱同彬 2; 黄静 3; 谷佳慧 1; 杨霖 4
来源期刊	中国水土保持科学
ISSN	2096-2673
出版年	2018
卷号	16 期号:4 页码:49-55
中文摘要	为及时掌握各项综合治理措施开展过程中广西西江流域石漠化动态变化情况,基于2001、2006、2011和2016年4期MODIS NDVI影像数据,综合运用RS与GIS技术,提取西江流域石漠化空间信息,分析西江流域石漠化动态特征。结果表明:20012016年间西江流域石漠化面积由18.06%下降至7.34%,且石漠化面积降幅逐年增大。石漠化集中分布于西江流域中部及西部地区,该区石漠化面积占全流域石漠化总面积的87.72%。桂贺江与左江流域石漠化缩减速率呈现出先增加后减少的趋势,其余各子流域石漠化缩减速率均在2011 2016年间达到最大值。石漠化演化的实质是不同等级石漠化相互转移的过程,其中低等级石漠化易向相邻等级石漠化转移。流域石漠化演变呈现高等级石漠化逐步向低等级石漠化转变的特征,表明针对广西西江流域石漠化的治理已取得一定成效,但石漠化好转的同时,部分地区仍存在石漠化恶化的问题,因此需要进一步加强流域石漠化监测力度,因地制宜调整与优化石漠化综合治理措施。
英文摘要	[Background] At present,numerous scholars have carried out a lot of research and demonstration work in view of Xijiang River Basin of Guangxi Zhuang Autonomous Region duo to its extensive rocky desertification, mainly including scale regional desertification monitoring and rocky desertification formation. But the distribution, the dynamic characteristics and the mechanism of rocky desertification in the whole basin are still lack of effective monitoring. In order to understand the dynamic characteristic of rocky desertification of Xijiang River in Guangxi province at once,GIS and RS technology were used to analyze the status of rocky desertification in Xijiang River Basin. [Methods] This study used MODIS NDVI images in 2001,2006, 2011,and 2016,and auxiliary data, including the map of geology in Guangxi province, land use data, the map of geomorphological and SRTM DEM. The spatial information of rocky desertification and analyzed the dynamic characteristics of rocky desertification in Xijiang River Basin were extracted by GIS and RS technologies. The information of rocky desertification was extracted by the method of human-computer interaction analysis. The Fractional Vegetation Coverage was the grading standard of rocky desertification,which can be divided into slight, moderate and severe. [Results] 1) From 2001 to 2016, the area of rocky desertification in the Xijiang River Basin decreased from 18.06% to 7.34%,and the decline was increasing. The decline reason of rocky desertification was related to the treatment of rocky desertification and the migration of population. In addition, levels of rocky desertification structure showed pyramidal shape, the area of rocky desertification decreases with the increase of grade. 2) Rocky desertification was concentrated in the central and western regions of Xijiang River Basin, which accounted for 87.72% of the total area of rocky desertification in this area. The reduction rate of rocky desertification in the Guihe River and Zuo River basin increased at the beginning of the studied period, and then decreased. In other sub-basins, the reduction rate of rocky desertification reached the maximum between 2011 and 2016.3) The essence of rocky desertification evolution was a process of the mutual transfer between different levels of rocky desertification, and the low-grade rocky desertification was easily transferred to the adjacent-grade. In this study, rocky desertification was gradually transferred to low-grade. In the areas of serious rocky desertification, the ecological environment has deteriorated and was hard to be restored. On the other hand,areas with serious rocky desertification were usually at the top of the hill, where there was usually no way to reach, thus this increase the difficulty of governance. [Conclusions] The dynamic characteristics of rocky desertification in Xijiang River Basin shows that the treatment of rocky desertification of Xijiang River Basin in Guangxi presented positive influence,but the improvement and deterioration of rocky desertification exists simultaneously,therefore,it is necessary to strengthen the monitoring of it and optimize the comprehensive treatment measures of it in the basin. This study may provide references for further strengthening the monitoring of rocky desertification and optimizing control measures of it in Xijiang River Basin.
中文关键词	石漠化 ; 岩溶 ; 遥感监测 ; 西江流域
英文关键词	rocky desertification Karst remote monitoring Xijiang River Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6332312
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238847
作者单位	1.中国地质大学(北京);;中国地质科学院岩溶地质所, ;;国土资源部广西壮族自治区岩溶动力学重点实验室, ;;桂林, 北京;;广西 100083;;541004, 中国; 2.中国地质科学院岩溶地质所, 国土资源部广西壮族自治区岩溶动力学重点实验室, 桂林, 广西 541004, 中国; 3.中国地质科学院岩溶地质所;;广西师范学院, 国土资源部广西壮族自治区岩溶动力学重点实验室;;, 桂林;;南宁, 广西;; 541004;;530001, 中国; 4.海南大学热带农林学院, 海口, 海南 570228, 中国
推荐引用方式 GB/T 7714	朱梓弘,朱同彬,黄静,等. 基于GIS的广西西江流域石漠化动态分析[J],2018,16(4):49-55.
APA	朱梓弘,朱同彬,黄静,谷佳慧,&杨霖.(2018).基于GIS的广西西江流域石漠化动态分析.中国水土保持科学,16(4),49-55.
MLA	朱梓弘,et al."基于GIS的广西西江流域石漠化动态分析".中国水土保持科学 16.4(2018):49-55.