|
|
|
| Dynamic variation analysis of rocky desertification in Xijiang River Basin of Guangxi based on GIS |
| ZHU Zihong1,2, ZHU Tongbin2, HUANG Jing2,3, GU Jiahui1,2, YANG Lin4 |
1. China University of Geosciences, 100083, Beijing, China;
2. Institute of Karst Geology, Chinese Academy of Geological Sciences, Karst Dynamics Laboratory, the Ministry of Land and Resources & Guangxi Zhuang Automomous Region, 541004, Guilin, Guangxi, China;
3. Guangxi Teachers Education University, 530001, Nanning, China;
4. Institute of Tropical Agriculture and Forestry, Hainan University, 570228, Haikou, China |
|
|
|
|
Abstract [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.
|
|
Received: 04 December 2017
|
|
|
|
|
|
| [1] |
李森,董玉祥,王金华. 土地石漠化概念与分级问题再探讨[J]. 中国岩溶,2007,26(4):279. LI Sen, DONG Yuxiang, WANG Jinhua. Re-discussion on the concept and classification of rocky desertification[J]. Carsologica Sinica, 2007, 26(4):279.
|
| [2] |
喻甦. 中国石漠化分布现状与特点[J]. 中南林业调查规划,2003,22(2):53. YU Su. The present situation and characteristics of rocky desertification in China[J]. Central South Forest Inventory and Planning, 2003, 22(2):53.
|
| [3] |
胡业翠,方玉东,江文亚. 广西喀斯特石漠化与贫困化空间相关性及互动效应研究[J]. 资源与产业,2009,11(5):105. HU Yecui, FANG Yudong, JIANG Wenya. Spatial correlation and interaction between rocky desertification and poverty in karst mountainous area in Guangxi[J]. Resources & Industries,2009,11(5):105.
|
| [4] |
李彬. 中国南方岩溶区环境脆弱性及其经济发展滞后原因浅析[J]. 中国岩溶,1995,14(3):209. LI Bin. An elementary analysis to environment fragility and reasons for economics lagging in the karst area of South China[J]. Carsologica Sinica, 1995, 14(3):209.
|
| [5] |
刘芳,何报寅,寇杰锋. 利用Landsat热红外遥感调查广西平果县石漠化现状和变化特征[J]. 中国水土保持科学,2017,15(2):125. LIU Fang, HE Baoyin, KOU Jiefeng. Landsat thermal remote sensing to investigate the present situation and variation characteristics of karst rocky desertification in Pingguo county of Guangxi, Southwest China[J]. Science of Soil and Water Conservation, 2017,15(2):125.
|
| [6] |
申文辉. 广西石漠化综合治理研究进展及展望[J]. 广西林业科学,2014,43(4):395. SHEN Wenhui. Research progress and prospects of rocky desertification comprehensive treatment in Guangxi[J]. Guangxi Forestry Science, 2014, 43(4):395.
|
| [7] |
龙晓闽,周忠发,张会,等. 基于NDVI像元二分模型植被覆盖反演喀斯特石漠化研究:以贵州毕节鸭池示范区为例[J]. 安徽农业科学,2010,38(8):4184. LONG Xiaomin, ZHOU Zhongfa, ZHANG Hui, et al. Study on karst rock-desertification of extracting vegetation coverage inversion based on NDVI serial images and dimidiate pixel model[J]. Journal of Anhui Agricultural Science, 2010, 38(8):4184.
|
| [8] |
王晓燕,徐志高. 基于RS与GIS的岩溶区石漠化时空变化特征:以湖南省慈利县为例[J]. 水土保持研究,2008,15(5):7. WANG Xiaoyan, XU Zhigao. Spatial and temporal variation features of rocky-desertification in karst area based on RS and GIS technology[J]. Research of Soil and Water Conservation, 2008, 15(5):7.
|
| [9] |
陈起伟,熊康宁,兰安军. 基于3S的贵州喀斯特石漠化遥感监测研究[J]. 干旱区资源与环境. 2014,28(3):62. CHEN Qiwei, XIONG Kangning, LAN Anjun. Monitoring studies on karst rocky desertification in Guizhou based on 3S[J]. Journal of Arid Land Resources and Environment, 2014, 28(3):62.
|
| [10] |
张文源,王百田. 贵州喀斯特石漠化分类分级探讨[J]. 南京林业大学学报,2015,39(2):148. ZHANG Wenyuan, WANG Baitian. Discussion on classification and gradation of karst rocky desertification in Guizhou province[J].Journal of Nanjing Forestry Unibersity,2015,39(2):148.
|
| [11] |
周忠发. 遥感和GIS技术在贵州喀斯特地区土地石漠化研究中的应用[J]. 水土保持通报,2001,21(3):52. ZHOU Zhongfa. Application of remote sensing and GIS technology for land desertification in Guizhou karst region[J]. Bulletin of Soil and Water Conservation, 2001, 21(3):52.
|
| [12] |
邓艳,曹建华,蒋忠诚,等. 西南岩溶石漠化综合治理水-土-植被关键技术进展与建议[J]. 中国岩溶,2016,35(5):476. DENG Yan, CAO Jianhua, JIANG Zhongcheng, et al. Advancement in key technologies for comprehensive treatment of water, soil and vegetation resources in karst rocky desertification areas[J]. Carsologica Sinica, 2016, 35(5):476.
|
| [13] |
关键超,覃伟良,陈丽,等. 广西岩溶地区石漠化动态变化及林业防治措施[J]. 安徽农业科学, 2017, 45 (3):187. GUAN Jianchao, QIN Liangwei, CHEN Li, et al. Discussion on forestry measures and trend analysis of rocky desertification in Guangxi[J]. Journal of Anhui Agricultural Science, 2017, 45(3):187.
|
| [14] |
周鸿. 从广西第五次人口普查看人口迁移状况[J]. 广西师范大学学报,2004,25(3):147. ZHOU Hong. An analysis of the migration of the fifth Guangxi population survey[J]. Journal of Guangxi Normal University, 2004, 25(3):147.
|
| [15] |
蔡林. 人口迁移和流动对生态环境的有利影响分析[J]. 生态经济,2006(6):44. CAI Lin. The beneficial influence of population migration & flow on the ecosystem of environment[J]. Ecological Economy, 2006(6):44.
|
| [16] |
周锦忠,吕英娟. 石漠化的成因机理与防治对策[J]. 国土资源导刊,2003,22(1):43. ZHOU Jinzhong, LÜ Yingjuan. Discussion on the origin, mechanism, prevention, management of becoming rock desert[J]. Land and Resources Herald, 2003, 22(1):43.
|
| [17] |
李先琨,苏宗明,吕仕洪,等. 广西岩溶植被自然分布规律及对岩溶生态恢复重建的意义[J].山地学报,2003,21(2):129. LI Xiankun, SU Zongming, LÜ Shihong, et al. The spatial pattern of natural vegetation in the karst regions of Guangxi and the ecological signality for ecosystem rehabilitation and reconstruction[J]. Journal of Mountain Science, 2003, 21(2):129.
|
| [18] |
宋同清,彭晚霞,杜虎,等. 中国西南喀斯特石漠化时空演变特征、发生机制与调控对策[J]. 生态学报, 2014, 34(18):5328. SONG Tongqing, PENG Wanxia, DU hu, et al. Occurrence, spatial-temporal dynamics and regulation strategies of karst rocky desertification in southwest China[J]. Acta Ecologica Sinica, 2014, 34(18):5328.
|
| [19] |
邱虎森,苏以荣,黎蕾,等. 典型喀斯特高原坡地土壤养分分布及其影响因素[J]. 土壤,2013,45(6):985. QIU Husen, SU Yirong, LI Lei, et al. Distribution of soil nutrients and its influencing factors in slope of typical Karst plateau[J]. Soils, 2013, 45(6):985.
|
|
|
|
