By Longjun Ci, Xiaohui Yang
"Desertification and Its keep watch over in China" comprehensively discusses desertification from the perspectives of formation, distribution, improvement and regulate types. This e-book actually elucidates easy idea and keep an eye on types of desertification, specifically the varied effects from examine performed for the UN conference to wrestle Desertification. This ebook will supply a theoretical and useful foundation for ecological and environmental making plans and layout in addition to guidance for prevention/restoration for desertification initiatives. it is going to additionally supply useful examples. Dr. Longjun Ci earned her measure at Cornell collage; she is a lead study scientist on the chinese language Academy of Forestry. Dr. Xiaohui Yang earned his measure at Beijing Forestry college; he's an affiliate Professor on the learn Institute of Forestry, chinese language Academy of Forestry.
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At present, the negative eﬀects of shifting sands and mobile dunes have been mitigated to a certain degree by applying some artiﬁcial measures. , 2005). 3 Status of desertiﬁcation and controlling measures in Australia Australia is a typical arid country with 75% of its land area occupied by arid and semi-arid zones. Land degradation, rangeland deterioration and dust and sandstorms are the prevailing hazards in arid and semi-arid zones in Australia. (i) Desertiﬁcation caused by dust and sandstorms The central and western coastal areas of Australia are frequently hit by dust and sandstorms.
Other Asian countries also face severe land degradation on a large scale caused by socio-economic and natural factors, such as wind erosion, water erosion, natural denudation and chemical deterioration, including excessive collection of fuelwoods and deforestation, and unsustainable agricultural practices. 7 shows the areas of desertiﬁcation-prone land, and population densities in some aﬀected developing countries in Asia. 1 Country (Source: UNCCD, 1998: The Social and Economic Impacts of Desertiﬁcation in Several Asia Countries.
The direct eﬀects include: (i) accidents in transport and communication; (ii) destruction of electricity lines and cut-oﬀ of electricity supplies; (iii) closing of airports and postponement of ﬂights; (iv) interruption of highway and railway transportation; (v) loss of topsoil, soil infertility and reduction of soil productivity; and (vi) increased incidences of asthma, other respiratory diseases and eye ailments. 58 (Calculation was based on 20 years visibility data of Meteorological Bureau) (iv) Approaches to prevent dust and sandstorms and to control desertiﬁcation On the basis of many years of experimentation and research, scientists have identiﬁed the following approaches for preventing dust and sandstorms: i) Perfection of a monitoring system to combat desertiﬁcation; improvement of technological knowledge; improvement of agriculture and animal husbandry management; and adjustments to land-use practices.