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rocky desertification poverty in Southwest China:Progress,challenges and enlightenment to rural revitalization

Journal of Geographical Sciences 2022年第7期32卷 1357-1382页

作者： ZUO Taian ZHANG Fengtai ZHANG Junyi GAO Lei YU Shijie School of Tourism Management and Services Chongqing University of EducationChongqing 400067China School of Management Chongqing University of TechnologyChongqing 400054China School of Geography and Tourism Chongqing Normal UniversityChongqing 401331China CSIRO Waite CampusUrrbraeSA 5064Australia

rocky desertification poverty(RDP)refers to rural poverty triggered or exacerbated by rocky desertification,which deprives farmers of opportunities for improving their financial conditions through agricultural *** China implements strategies including building a moderately prosperous society,targeted poverty alleviation,and rural revitalization,issues concerning RDP have become the work foci for the Chinese government and research hotspots for Chinese academic *** paper provides a thorough review of the history,progress,challenges and prospects based on decades of RDP studies in Southwest ***,we review the origin,definitions and historical development trends of *** nearly four decades,research on RDP can be framed as four stages:start-up,poverty alleviation and ecological reconstruction,rocky desertification comprehensive control and green *** find that RDP research progress appears to be directly related to the Chinese government’s policy support and decision-making in mitigating ***,previous findings are reviewed and summarised regarding four research aspects:relationship exploration between rocky desertification and rural poverty,mechanisms of rocky desertification for exacerbating poverty,strategies for eliminating RDP and anti-poverty benefit evaluations of rocky desertification control ***,the remaining challenges are identified and summarised,including the challenges of conducting theoretical research on RDP and consolidating achievements in eliminating *** find that while many achievements have been made in the study of RDP in recent decades,the completeness and systematism of the theoretical system remain weak,and the guidance for empirical research is still ***,this research is fundamental in achieving rural revitalization in rocky desertification *** key to eliminating RDP lies in scientific rural transformation *** that the karst ecological environment in

关键词： rocky desertification rural revitalization poverty alleviation green development research progress Southwest China

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rocky desertification Risk Zone Delineation in Karst Plateau Area:A Case Study in Puding County,Guizhou Province

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Chinese Geographical Science 2010年第1期20卷 84-90页

作者： ZHANG Panpan HU Yuanman XIAO Duning LI Xiuzhen YIN Jie HE Hong S Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Graduate University of Chinese Academy of Sciences Beijing 100049 China University of Missouri-Columbia MO 65211 USA

Karst rocky desertification is a geo-ecological problem in Southwest China. The rocky desertification risk zone delineation could be used as a guide for the regional and hierarchical rocky desertification management and prevention. We chose the middle and lower reaches of the Houzhai underground basin on the karst plateau in Puding County, Guizhou Province, China as the study area and selected land use type, elevation, slope, aspect, lithology and settlement buffer as the main driving factors of the rocky desertification. The potential risk of rocky desertification was quantifed with the factor-weights union method and statistical analysis method. Five grades of rocky desertification risk were delineated based on Geographic Information System. The extremely low, low, moderate, high and extremely high rocky desertification risk zones accounted for 5.01%, 44.17%, 33.92%, 15.59% and 1.30%, respectively. As a whole, the rocky desertification risk level was moderate because the area of low and moderate rocky desertification risk zones occupied 78.09% of the study area. However, more than half of the area （about 50.81%） was predicted to have moderate rocky desertification risk and above, indicating that the study area was subject to rocky desertification. rocky desertification risk was higher in the southeast and lower in the northwest of the study area. Distinct differences in the distribution of rocky desertification risk zones corresponding to different factors have been found.

关键词： rocky desertification rocky desertification risk zone karst plateau Guizhou Province

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Characteristics of Changes in Karst rocky desertification in Southtern and Western China and Driving Mechanisms

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Chinese Geographical Science 2021年第6期31卷 1082-1096页

作者： CHONG Guoshuang HAI Yue ZHENG Hua XU Weihua OUYANG Zhiyun State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China University of Chinese Academy of Sciences Beijing100049China

The karst landform is a typical ecologically vulnerable region,and the problem of karst rocky desertification in southtern and western China has led to impoverishment and a degraded local ecological environment,which severely limits local socioeconomic *** effective and appropriate control of karst rocky desertification in southtern and western China requires knowledge about its characteristics of variation and driving *** this study,we chose eight regions in the southtern and western China as research areas and analysed the characteristics of the changes in karst ecosystem patterns and rocky desertification from 2000 to *** on these characteristics,we present the mechanisms that drive karst rocky desertification in the southtern and western China by utilizing the redundancy analysis(RDA)ordination *** results show that the total area of rocky desertification in southtern and western China had been continuously decreasing from 2000 to 2015,revealing a positive development trend in rocky *** desertification variations were mainly affected by human *** reduction in farmland area improved farmland management and increased regional gross industrial product,which together with continuously rising gross domestic product of the tertiary industry caused a positive rocky desertification ***,the local karst tourism has a certain effect on inducing slight rocky desertification.

关键词： southtern and western China karst rocky desertification change characteristics driving mechanisms

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Effects of rainfall and rocky desertification on soil erosion in karst area of Southwest China

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Journal of Mountain Science 2022年第11期19卷 3118-3130页

作者： PAN Li-dong LI Rui SHU Dong-cai ZHAO Li-na CHEN Mei JING Jun School of Karst Science Guizhou Normal UniversityGuiyang 550001China State Engineering Technology Institute for Karst desertification Control Guiyang 550001China College of Resources and Environment Southwest UniversityChongqing 400715China Guizhou Hydrology and Water Resources Bureau Guiyang 550002China

Monitoring and evaluating the evolution of rocky desertification timely and studying the characteristics of soil erosion under different rainfall patterns are of great scientific significance for regional soil and water conservation,rocky desertification control and ecological environment *** periods of remote sensing image data from 2005 to 2020 were selected to study the evolution characteristics of rocky desertification and its impact on soil erosion in the controlled boundary area of Shibantang hydrological station of Yeji River Watershed,Guizhou Province,*** to the 408 erosive rainfall events,the soil erosion under different rainfall patterns in the watershed was *** results showed that:erosive rainfall events in the study area were mainly pattern A,accounting for 57.4%of the total rainfall events;the second was pattern B,accounting for 28.9%of the total rainfall events;the rainfall pattern of C occurred *** them,pattern A was the main rainfall pattern leading to soil and water loss and had the largest contribution rate to soil erosion in the *** 2005 to 2020,the area of rocky desertification showed a decreasing trend,accounting for 72.2%from 87.9%.Spatially,rocky desertification has mainly concentrated in the middle south of the watershed since 2010,while the rocky desertification mainly concentrated in the middle and north before *** effects of different grades of rocky desertification on soil erosion were different,and the soil erosion modulus in areas with the medium,severe and extremely severe rocky desertification was generally *** soil erosion modulus estimated by the RUSLE(Revised Universal Soil Loss Equation)model was still much higher than that calculated by the data measured by the hydrological monitoring ***,the application of the RUSLE model in karst area needs to be further *** results can provide reference for rocky desertification control,soil erosio

关键词： Erosive rainfall rocky desertification Spatial-temporal evolution Soil erosion Karst

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Ecological Restoration of rocky desertification in Hongfeng Lake Karst Area Based on SWOT Analysis

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Asian Agricultural Research 2012年第6期4卷 71-76页

作者： LIU Long-chun LIU Zhao-jun XIONG Kang-ning LI Chen Institute of South China Karst Guizhou Normal UniversityGuiyang 550001China Guizhou State Key Laboratory Incubation Base for Karst Mountain Ecology EnvironmentGuiyang 550001China

In order to provide a reference for rocky desertification control in karst areas,we take the case of Hongfeng Lake rocky desertification Comprehensive Control Demonstration Area in Qingzhen City of Guizhou Province,and expound strength,weakness,opportunity and challenge in its ecological restoration,using SWOT analysis method in management *** we finally put forth scientific strategies for ecological restoration in this demonstration area.

关键词： rocky desertification Demonstration area Ecological restoration SWOT analysis

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The causes and processes responsible for rocky desertification in karst areas of southern China

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Research in Cold and Arid Regions 2009年第1期1卷 80-90页

作者： Sen Li XingHu Wei JinGuo Huang XiZhi Wang GuanYao Lu HuiXia Li Institute of Resources and Environment Science Foshan UniversityFoshanGuangdong 528000China College of Geography and Environment Science Northwest Normal UniversityLanzhouGansu 730070China

The karst region of southern China is a fragile ecological zone with widespread rocky desertification. This paper describes the rocky desertification occurring in this region in terms of both natural and anthropogenic factors. During geological time periods, the region’s changing environment governed the natural rocky desertification processes, whereas during historical and modern times, anthropogenic processes have been superimposed on these natural processes. Human activities have accelerated and exacerbated rocky desertification. The period from the beginning to the middle of the Qing dynasty was an important transitional period in which human activities began to exert a particularly strong influence on rocky desertification. Since then, the effect of anthropogenic factors has increasingly exceeded the effect of natural factors. The rocky desertification process in southern China’s karst region combines surface ecological processes (including vegetation degradation and loss, soil erosion, surface water loss, and bedrock solution) with a reduction of the land’s biological productivity, leading to degradation that produces rocky desert. Controlling rocky desertification requires comprehensive development of sustainable agriculture and economic development that provides employment alternatives to agriculture and thereby promotes the rehabilitation of rocky desertified land.

关键词： karst topography rocky desertification desertification processes southern China

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Study on the Driving Forces of rocky desertification in Guizhou Province Based on Variation Coefficient Method

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Meteorological and Environmental Research 2011年第2期2卷 76-79页

作者： GUO Wen-qiang AN Yu-lun LIU Shi-xi School of Geographic and Environmental Sciences Guizhou Normal UniversityGuiyang 550001China

[Objective] The aim was to study the driving forces of rocky desertification in Guizhou Province. [Method] Based on GIS and RS technology, the main driving forces of rocky desertification in Guizhou Province were analyzed by means of correlation analysis and variation coefficient method, and then the distribution of rocky desertification in Guizhou Province was assessed synthetically. [Result] The main driving forces of rocky desertification in Guizhou Province were vegetation cover, rainfall, peasant income and gradient which were obviously correlative with rocky desertification; from theoretical distribution, rocky desertification was the most serious in Bijie, southwest Guizhou, southern Guizhou and northeastern Guizhou, and the theoretical distribution of rocky desertification in Bijie was severer than its current situation, which showed that construction of ecological function area in Bijie restrained the development of rocky desertification effectively; the good consistency between theoretical and current distribution of rocky desertification revealed that the study method was feasible. [Conclusion] The study could provide theoretical references for the practical control of rocky desertification.

关键词： Driving force Variation coefficient Correlation analysis rocky desertification Guizhou Province China

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rocky desertification Dynamic Analysis and the Development of Management Information System

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Agricultural Science & Technology 2008年第2期9卷 45-48,92页

作者：颜学莉谢世友西南大学地理科学学院

With the background of severe rocky desertification in the west of China and the ohjective of ecological environment construction and poverty elimination, the management information system of rocky desertification was designed according to the natural and humane characteristics in Nanchuan of Sichuan Province. The system was composed of data management module, information query module for rocky desertification, spatial analysis module and dynamic monitoring module.

关键词： rocky desertification Inforumtion system Dynamic analysis Nanchuan

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Spatial Distribution Characteristics of rocky desertification in Qiandongnan Prefecture of Guizhou Province

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Journal of Resources and Ecology 2017年第4期8卷 422-432页

作者：窦红涛甄霖李海萍中国科学院地理科学与资源研究所北京100101 中国人民大学环境学院北京100872 中国科学院大学资源与环境学院北京100049

rocky desertification is a serious threat to socioeconomic development and the ecological security of karst areas. The control of rocky desertification has therefore become a major concern of both the Chinese government and local populations living in karst areas. In this paper, we used the national evaluation system for monitoring rocky desertification, and adjusted relevant indices. For example, we improved the system＇s base rock exposure index with Normalized Difference Rock index（NDRI）, substituted a soil erosion index for soil depth, and from these obtained the categories and spatial distribution of rocky desertification. We also studied the main factors and functional mechanisms of rocky desertification with consideration given to natural geographic conditions such as soil, physiognomy, elevation, slope and river network density, and, also human interference factors such as population density, GDP, population distribution, and from these got spatial distribution characteristics and influencing factors of rocky desertification in Qiandongnan prefecture. Results indicate that the primary soil types of rocky desertification in the research areas include yellow, limestone and paddy soils. These rocky desertification areas are more likely to contain limestone soil than purple soil, and least likely to contain paddy soil. The distribution of moderate or severe rocky desertification in areas with moderate to steep slope is 40%, where sloping agricultural land comprises a large proportion of the total. rocky desertification is widely distributed in regions with precipitation between 1000–1200 mm, and this precipitation is the main factor causing greater soil erosion in limestone soil base and sloping agricultural areas. Moreover, desertification is closely related to the distribution of residential areas, population density, poverty and sloping agricultural land

关键词： rocky desertification NDRI spatial distribution Qiandongnan prefecture

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Temporal variation of suspended sediment load in the Pearl River due to human activities

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International Journal of Sediment Research 2011年第4期26卷 487-497页

作者： Wei ZHANG,Shousheng MU,Yanjing ZHANG,and Kaimin CHEN 1 Assoc.Prof.,State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University, Nanjing,210098,China, 2,4 Graduate student,College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing,210098, China 3 Prof.,China Institute of Water Resources and Hydropower Research,Beijing,100038,China Assoc. Prof. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China Graduate student College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 China Prof. China Institute of Water Resources and Hydropower Research Beijing 100038 China

Data on sediment flux at three hydrologic stations from the 1950s to 2006 are utilized to study the decadal,annual,and monthly variations in suspended sediment load delivered from the Pearl River to the *** show that variations in sediment flux from three main tributaries,including the West River,the North River and the East River,are spatially *** nearly 90%of the suspended sediment load comes from the West River,its variation has dominated the overall tendency of sediment flux in the entire Pearl *** a significant decreasing trend exists in the annual variation of the total sediment flux,the decadal change can be divided into an increasing phase and a decreasing phase,with the turning point between the two phases in the late *** the 1950s to the 1980s,the average annual river sediment flux increased by 30.43%.However,sediment flux has decreased significantly since the 1990s,with the average sediment flux being 38.60%less in the 2000s than that in the *** current sediment flux is also 52.93%less than its peak in the 1980s. The monthly variation pattern of the suspended sediment load transport to the sea is more interesting. For the West River,all months show a decreasing trend,and for most months the reduction values are ***,for the East River the sediment load shows a decrease trend in the dry season and an increase trend in the wet *** method of regression analysis was used to study the influence of precipitation in the variation on the sediment *** was found that the climate change is not the main driving force behind the variation in suspended sediment *** the 1990s, intensive land use destroyed the vulnerable ecosystem of the upper Pearl River,and speeded up the process of rocky ***,aggravated soil erosion caused an increase in suspended sediment ***,sediment retention within reservoirs had begun to play a dominant role after the massive constru

关键词： Pearl River Sediment flux Human activities rocky desertification Dam construction

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