检索结果-南通市图书馆

desertification and Blown Sand Disaster in China

Journal of Agricultural Science and Technology(A) 2016年第6期6卷 363-371页

作者： Yanli Lyu Yanyan Yang Lanlan Guo Lianyou Liu Peijun Shi Guoming Zhang Zhiqiang Qu Xia Hu Jingpu Wang Yiying Xiong Haiming Wen Jie Lei Bo Liang Jiadong Dai Key Laboratory of Environment Change and Natural Disaster Ministry of Education Beijing Normal University Beijing 100875 China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University Beijing 100875 China Academy of Disaster Reduction and Emergency Management Beijing Normal University Beijing 100875 China Faculty of Geographical Science Beijing Normal University Beijing 100875 China College of Ecology and Environmental Sciences lnner Mongolia Agricultural University Huhhot 010019 lnner Mongolia China

Approximately 331 million ha, one-third of China＇s total land, is prone to desertification processes, leading to natural disasters and economic losses. In this study, the situation, tendency, their influences and their risk governance of desertification and blown sand disaster in China were examined using satellite images, field photographs, field data and a literature review. The desiccated areas in Lop Nor and the lower Heihe River fluvial plain covered about 50,000 km2 and 40,000 km2, respectively. In Ejina, about 100 species of vegetation became extinct. The rate of wind erosion in China was between 1,000 tons/km2/year and 2,000 tons/km2/year. There were 12 sand deserts and sandy lands, occupying a total of 710,000 km2. Salinized soils occurred across 99.1 million ha. The two main sand and dust storm-prone areas in China were the Tarim Basin and its surroundings, and the Alxa Plateau and its surroundings. From 1981 to 2007, the annual average frequency of sand and dust storms varied from 1 d to 37 d with a general increase from southeast to northwest. Since 1978, China has implemented a number of ecological construction projects that have reduced desertification from 1999 to 2004 and from 2005 to 2009, and the number of dust and sand storm days from 9.3 d between 1954 and 1959 to 4.4 d between 2000 and 2007. The results could improve understanding of desertification and blown sand disasters in China and provide valuable experiences for global desertification control.

关键词： desertification blown sand disaster desertification and blown sand control arid and semiarid China ecological construction project.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identification and evaluation of desertification reversal in China: indicators and methods review

引用

Research in Cold and Arid Regions 2014年第3期6卷 190-200页

作者： Ning Liu LiHua Zhou Yong Chen Shan Huang Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences China Development Bank Qinghai Branch

With gradual emergence of desertification reversal after inception of combative attempts in China, its evaluation which is based on solid identification is imperative. However, either identification or evaluation lacks consensus and are limited in earlier studies. This paper endeavors to fill this gap by relying on a systematic review of recent studies. After a clarification of causal relation of identification and evaluation, an argument of indicators and models selection is presented taking sustainability, cost and benefits, public interest and individual behavior into account. At first, we emphasize the logical and sequential importance of identification as prerequisite of evaluation, and demonstrate that fundamental identification could be operated by both direct and indirect implementations, though direct implementation usually seems to be a favorite al- tel＇native. Here, we emphasize a consideration of sustainable development, cost and benefits, public interest and individual behaviors together, due to the hiatus of incorporating economic and ecological segments together, and the innate theoretical deficiencies on environmental products of traditional economic and ecological methods of evaluation. Thus, we conceptually merge the economic and ecological segments into one theoretical framework. However, no matter how elaborate the models is, there is an apparent gap of both identification and evaluation due to failure of dynamic interpretations, thereby, it may be future trend and urgency on models＇ elaboration.

关键词： desertification rehabilitation identification evaluation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sandstorms and desertification

引用

Journal of Geographical Sciences 2000年第3期10卷 99-102页

作者： CHEN Zhi-qing1, ZHU Zhen-da2 (1.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2. Institute of Dsert Research, Chinese Academy of Sciences, Beijing 100101, China)

Sandstorm is a frequently occurred disastrous weather in northern China. The increasing occurrence frequency recently, especially the much more frequently occurred sandstorms with high intensity in the spring of 2000 have caused great loss to national economy. The combination of strong wind, exposed sandy soil on ground surface and unstable air current constitutes the necessary conditions for the sandstorms. However, the accelerated desertification process resulting from irrational human economic activities is responsible for the accelerated sandstorms. The effective measures to mitigate sandstorm lie in strengthening desertification control and eco-environmental protection.

关键词： sandstorm generating conditions desertification eco-environmental protection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On the role of climate in desertification of the Sahel Belt

引用

Journal of Geographical Sciences 1998年第4期8卷 84-88页

作者： DING Dengshan MA Jongli PEN Buzhuo RUI Fuhong ZHANG Hong ZHANG An Department of Urban and Resources Science, Nanjing University, Nanjing 210093 CHINA

s—Sahel in West Africa is the most seriously desertified zone in the world. In this paper, the impact of climate on desertification in Sahel is discussed. The climate can exert an impact on desertification in the zone either individually or in conjunction with excessive human economic activities. The rapid desertification in the zone over the last several decades, however, is mainly caused by excessive human economic activities.

关键词： desertification Sahel climate.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

THE INFLUENCE OF HUMAN BEING ON THE desertification OF ORDOS AND THE POSSIBLE COUNTERMEASURES IN THE FUTURE

引用

干旱区资源与环境 1993年第Z1期7卷 34-37页

作者： Leng Shuying Institute of Geography, Chinese Academy of sciences, Beijing

The Ordos Plateau is a unified geographical region demarcated by the Yellow River’s elbow section on the north and the Great Wall on the south, administratively comprisingthe whole Ih-Ju League of Inner Mongolia, part of Yulin Prefecture of Shaanxi Province,and part of Yanchi County of Ningxia. The unique sandy and denuded landscape of the pla-

关键词： Ordos Plateau Human Activity Land desertification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

IMPACT OF WATER ENVIRONMENTAL CHARACTERISTICS IN DRY-HOT VALLEY OF JINSHA RIVER ON SOIL desertification

引用

Chinese Geographical Science 1999年第2期9卷 93-96页

作者：刘刚才刘淑珍

Based on the field investigation and the analysis of soil moisture curve, it is clearly shown that there is a positive relationship between vegetation coverage rate and soil moisture capacity and soil depth in dry hot valley of the Jinsha River, and also there is a desertification process with seasonality. It is suggested that the basic factor of desertification in the area is water deficiency (seasonal drought and low soil water capacity) and the direct dynamic of desertification is soil erosion. Some effective countermeasures are presented, of which water saving planting and irrigation techniques should be firstly applied in the studied area.

关键词： desertification dry hot valley of the Jinsha River water environment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

desertification and Dust Storms in China: Impacts, Root Causes and Mitigation Strategies

引用

Chinese Forestry Science and Technology 2006年第3期5卷 22-35页

作者： LU Qi WANG Sen SQUIRES Victor YANG Youlin National R ＆ D Centre for Combating desertification Chinese Academy of Forestry. Beijing 100091 P.R. China Canadian Forest Service Natural Resources Canada 506 West Burnside Road Victoria BC Canada V8Z 1M5 International Consultant on Dryland PO Box 31 Magill 5072 Adelaide Australina Regional Coordinating Unit United Nations Convention to Combat desertification Bangkok 10200 Thailand

desertification and dust storms and their impact on the Chinese economy and the environment were examined. A context was established using the best information available on the trends of desertification and dust storms in China. Building on the context, the second section the root causes of desertification and dust storms were examined. Several myths were sought to be identified about some core issues surrounding desertification and dust storms. China’s National Action Plan to combat desertification was reviewed and the effectiveness of existing strategies and programs for mitigating the adverse effects of desertification and dust storms were discussed. The future research needed was pointed out.

关键词： desertification dust storm impact root cause mitigation strategy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development of land desertification in Bashang area in the past 20 years

引用

Journal of Geographical Sciences 2001年第4期11卷 53-57页

作者： Chen Zhi-qing Zhu Zhen-da CAS Institute of Geographic Sciences and Natural Resources Research Beijing China (GRID:grid.9227.e) (ISNI:***) CAS Institute of Cold and Arid Regions and Environmental Engineering Lanzhou China (GRID:grid.9227.e) (ISNI:***)

Natural conditions in Bashang area are characterized by zonal transitions which are liable to be impacted by natural disasters and intensified human activities. The extremely fragile eco-environment is also liable to have desertification formed and developed. In the 18 years from 1978 to 1996, the desertified land area of Bashang within the scope of the map nearly doubled, a total increase of 2199.11 km2, averaging an increase of 122.17 km2 per year. Moreover, the seriously desertified area increases rapidly. Land desertification in Bashang is the combined result of natural factors and irrational human economic activities. Cultivated land expansion, population growth, and overgrazing aggrevate desertification development.

关键词： Bashang area desertification impact of human activities

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

LAND desertification(DEGRADATION) AND ITS CONTROL IN LOWER REACH REGION OF HEIHE RIVER

引用

干旱区资源与环境 1993年第Z1期7卷 63-65页

作者： Chen Longhen Institute of Desert Research, Academia Sinica, Lanzhou, China

The lower reach of Heihe River, also known as Ejina River, was called Ruoshui Riverin ancient times. This area, although fallen into extremely arid temperate desert in the EjinaBanner, Inner Mongolia, has been a main line of communication since then and formed thefertile Ejina Oasis relying on the water source flowing from the Qilian mountains. However,in the recent years the land desertification (degradation) in this area has developed rapidly,

关键词： Heihe River Lower Reaches desertification Oasis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Monitoring desertification processes in Mongolian Plateau using MODIS tasseled cap transformation and TGSI time series

引用

Journal of Arid Land 2018年第1期10卷 12-26页

作者： LIU Qingsheng LIU Gaohuan HUANG Chong State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100111China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China

Most remote sensing studies assess the desertification using vegetation monitoring method. But it has the insufficient precision of vegetation monitoring for the limited vegetation cover of the desertification region. Therefore, it offers an alternative approach for the desertificafon research to assess sand dune and sandy land change using remote sensing in the desertification region. In this study, the indices derived from the well-known tasseled cap transformation （TCT）, tasseled cap angle （TCA）, disturbance index （DI）, process indicator （PI）, and topsoil grain size index （TGSI） were integrated to monitor and assess the desertification at the thirteen study sites including sand dunes and sandy lands distributed in the Mongolian Plateau （MP） from 2000 to 2015. A decision tree was used to classify the desertification on a regional scale. The average overall accuracy of 2000, 2005, 2010 and 2015 desertification classification was higher than 90%. Results from this study indicated that integration of the advantages of TCA, DI and TGSI could better assess the desertification. During the last 16 years, Badain Jaran Desert, Tengger Desert, and Ulan Buh Desert showed a relative stabilization. Otindag Sandy Land and the deserts of Khar Nuur, Ereen Nuur, Tsagan Nuur, Khongoryn Els, Hobq, and Mu Us showed a slow increasing of desertification, whereas Bayan Gobi, Horqin and Hulun Buir sandy lands showed a slow decreasing of desertification. Compared with the other 11 sites, the fine sand dunes occupied the majority of the Tengger Desert, and the coarse sandy land occupied the majority of the Horqin Sandy Land. Our findings on a three or four years＇ periodical fluctuated changes in the desertification may possibly reflect changing precipitation and soil moisture in the MR Further work to link the TCA, DI, TGSI, and PI values with the desertification characteristics is recommended to set the thresholds and improve the assessment accuracy with field investigation.

关键词： desertification MODIS desert sand dune sandy land Mongolian Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：