Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《EARTH SCIENCE FRONTIERS》 1997-Z1
Add to Favorite Get Latest Update

GLOBAL CHANGES AND DESERTIFICATION

Zhu Zhenda(Institute of Desert Research C A S, Lanzhou, 730000 Desertification Research Center N E P A, Nanjing, 210042)  
Desertification is not only one of the most serious environmental problems in the world but also a main content of global changes. Its importance is affirmed by the international convention to combat desertification signed in 1994. Based on definition given by the convention and on China′s situation, desertification as a process of land degradation is manifested itself by desert like landscape and is triggered by the interaction between irrational human activites and fragile ecosystems. Sandy desertification is one of the main types of desertification in North China, which is indicated by drought, frequent winds, exposed surface and loose sand composition of topsoil. Especially, continual aridization of North China in the recent times is responsible for the development of desertification. The sandy desertification in the arid and semi arid regions is caused mainly by human factors, i.e., 30 1% by overgrazing, 26 9% by over reclamation, 33 7% by excess woodcutting, 9 6% by misuse of water resources and 0 7% by industrial mining and communication activities. Based on aerial photos and landsat in different time, it is shown that desertification trends to spread, for example, the sandy desertified lands have already increased by 17838.3 km 2 from 1975~1987, especially, it is more distinct within the dry farmlands in the sandy steppe region.
【CateGory Index】: X14
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【References】
Chinese Journal Full-text Database 10 Hits
1 Zhang Weijiang (Baicheng Teachers College 137000);Land Desertification and it's control in Ecotone BetweenAgriculture and Animal Husbandry in Northern China[J];Journal of Baicheng Teachers College;2003-04
2 WANG Jun,MENG JijunCollege of Urban and Environmental Sciences,Peking University;Key Laboratory for Earth Surface Processes,Ministry of Education;Beijing,100871;Study on Net Primary Production Variations in the Central Part of Inner-Mongolia during 1981-2000[J];Acta Scientiarum Naturalium Universitatis Pekinensis;2008-02
3 ZHANG Lixiao SONG Yuqin (Department of Environmental Sciences,College of Envir onmental Sciences, Peking University, Beijing, 100871);Efficiency of the Three-North Forest Shelterbelt Program[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2003-04
4 WANG Jun,MENG JijunCollege of Urban and Environmental Sciences,Peking University,Key Laboratory for Earth Surface Processes,Ministry of Education,Beijing 100871;;Study on Net Primary Production Variations in the Central Part of Inner-Mongolia during 1981-2000[J];Acta Scientiarum Naturalium Universitatis Pekinensis;2009-01
5 LIN Nian-feng,TANG Jie (College of Environment and Resou rces, Jilin University, Changchun130026,China);QUATERNARY ENVIRONMENTAL EVOLUTION AND DESERTIFICATION IN NORTH CHINA[J];Journal of Changchun University of Science and Technology;2003-02
6 WANG Hong-liang~1,2 , LEI Hong-yan3, ZHANG Qing-sheng3 1.Department of Geology, Northwest University, Xi’an 710054, China;2.Xi’an Institute of Geology and Mineral Resources, Xi’an 710054, China; 3.Shaanxi Regional Institute of Geology and Mineral Resources, Xianyang 712000, China;Dynamic evolution analysis of the sandy desertification in the Shenmu area, North Shaanxi, China[J];Journal of Chengdu University of Technology(Science & Technology Edition);2005-03
7 XIONG Xiao-gang~(1,2),HAN Xing-guo~1,BAO Ya-jing~1 (1.Laboratory of Quantitative Vegetation Ecology,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;2.Graduate School,Chinese Academy of Sciences,Beijing 100039,China);Discussion on the research into sandy desertification,accompanying by thicketization of semiarid grasslands in Inner Mongolia,China[J];Acta Pratacultural Science;2005-05
8 Wang Tao; Wu Wei; Wang Xizhang(Lanzhou Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000);REMOTE SENSING MONITORING AND ASSESSIN SANDY DESERTIFICATION: AN EXAMPLE FROM THE SANDY DESERTIFICATION REGION OF NORTHERN CHINA[J];QUATERNARY SCIENCES;1998-02
9 CI Long\|jun 1, YANG Xiao\|hui 1, CHEN Zhong\|xin 2 (1 Chinese Academy of Forestry, Beijing 100091, China ; 2 Chinese Academy of Agriculture, Beijing 100081, China);THE POTENTIAL IMPACTS OF CLIMATE CHANGE SCENARIOS ON DESERTIFICATION IN CHINA[J];Earth Science Frontiers;2002-02
10 ZHANG Dian fa BIAN Jian min (Environment and Construction College, Changchun Science and Technology University, Changchun, 130026, China);ANALYSIS ON THE ECO-ENVIRONMENTAL VULNERABLE MECHANISMS OF LAND DESERTIFICATI ON IN THE FARMING-PASTORAL ECOTONE IN NORTH CHINA[J];ARID LAND GEOGRAPHY;2000-02
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 Li Guolian et al (Environmental and Chemical Engineering School, Nanchang University, Nanchang,Jiangxi 330029);Agricultural Problem and Eco-agriculture in China[J];Journal of Anhui Agricultural Sciences;2003-03
2 ZHAO Sheng-long et al (College of Geography and Environmental Science,Northwest Normal University,Lanzhou,Gansu 730070);Dynamic Evaluation of Minqin Oasis Desertification[J];Journal of Anhui Agricultural Sciences;2007-28
3 MA Jun et al(Beipu Town,Xixia district,Yinchuan City,Ningxia Autonomous Region,Yinchuan,Ningxia 750021);Harm,Causes and Countermeasures of Land Desertification in China[J];Journal of Anhui Agricultural Sciences;2007-32
4 ZHAO Pei-yi et al(Forestry College,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018);Study on the Method of Quantitative Observation on Soil Wind Erosion in Field[J];Journal of Anhui Agricultural Sciences;2008-29
5 CHE Zi-li et al(Resource Environment and City Science Department,Xianyang Normal University,Xianyang,Shaanxi 712000);Research on the Land Desertification along the Great Wall in Northern Shaanxi Province Based on RS and GIS[J];Journal of Anhui Agricultural Sciences;2009-06
6 LI Jia(China Railway 5th Survey and Design Institute Group Co.;Ltd.,Beijing 102600);Study on the Ecological Environment Recovery and Evolution around Desert Railway[J];Journal of Anhui Agricultural Sciences;2009-21
7 Zhang Weijiang (Baicheng Teachers College 137000);Land Desertification and it's control in Ecotone BetweenAgriculture and Animal Husbandry in Northern China[J];Journal of Baicheng Teachers College;2003-04
8 WU Wei NI Jinren LIU Rongxia LI Zhenshan (Department of Environmental Engineering, College of Environmental Sciences, Pek ing University; The Key Lab of Water and Sediment Sciences, Ministry of Education, Beijing, 1008 71);Dynamic Assessment for Desertification Based on the Changes in Landuse Structure: An Example from Naiman Qi of the Inner Mongolia, China[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2003-04
9 LIN Nian-feng, WANG Juan,TANG Jie, SUN Ping-an (College of Environment and Resources, Jilin University,Changchun130026, China);Study on the optimized agroecological environment system——A case of Changling County in the west plain of Jilin Province[J];Journal of Changchun University of Science and Technology;2004-01
10 WANG Guo-ping~(1, 2),LIU Jing-shuang~(1),TANG Jie~(2) (1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences, Changchun130012,China;2.College of Environment and Resources,Jilin University,Changchun130026,China);Historical variation of heavy metal inputs to the marsh wetlands[J];Journal of Jiling University (Earth Science Edition);2004-03
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved