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Chinese Academy of Agricultural Sciences (2007)

Study on the Forest Pattern and Efficiency of Wind Break and Sand Fixation in WuLanBuHe Desert of Inner Mongolia

孟乐;Meng Le

Titre : Study on the Forest Pattern and Efficiency of Wind Break and Sand Fixation in WuLanBuHe Desert of Inner Mongolia

Auteur : 孟乐;Meng Le

Grade : Master’s Theses 2007

Université : Chinese Academy of Agricultural Sciences

Résumé
Ecological environment deterioration of Wulanbuhe Desert is the main cause of the sandstorms in North China and Beijing. The desert has been exploited on a large scale without a complete forest belt since the 1960s. The alluvial soil from Yellow River is eroded by strong winds, and thus causes sandstorms. It affects seriously the whole North China as well as local ecological environment. The production and life of the residents are influenced as well. Especially in the capital of Beijing, the probability of sandstorm is increasing year by year. What’s worse, the sandy substances from Inner Mongolia have even been found in Japan and Korean peninsula. To the Southeast of the Alaskan Plateau lies the Helen Mountains, whose height and the vegetation on it can to some extent prevent sandstorms from spreading. However, to the northeast, there’s not a single natural barrier around. It lies just between the Helen Mountains and the Lang Mountain, forming a mountain pass, where a wind blows fiercely and as a consequence, sandstorms occur frequently. We have to suffer sandstorms 20 days a year and a cloud of dust for 79.6 days. And it is just the place for sandstorms to extend directly to the whole North China and hence becomes the source of the sandstorms in the Northwest. Only when we afforest Wulanbuhe Desert can we prevent sandstorms from spreading to the whole North China and Beijing.The tractate is based on the Ulan Buh Desert and the northern part of the delineated area of the pilot survey, testing, sampling. The Wind Break and Sand Fixation Forest System is to stop the spread of desert expansion. The tractate contains the investigation and above cases. Meanwhile it describes the most suitable for the planting area of the plant species through a series of Sand adaptive plant species for drought, sand-buried, anti-erosion test. In order to find out the best and suitable model of the wind break and sand fixation forest in Ulan Buh Desert, the paper is based on the test of wind-allocation type of effect in the experimental area and the ecological and economic benefits generated in the process of the wind break and sand fixation. Sand-fixation and resistance forest is the most suitable to be planted as a windbreak configuration mode in the Ulan Buh Desert. Meanwhile it also points out that various windbreak forests have different effects on the different geographical environment. In this paper, the ultimate configuration of a forestation and reforestation sand barrier is the issue to ponder. The study of windbreak and sand-fixation configuration mode mentioned in the paper will play a positive role for raising the desert desertification control and accelerate the pace of regional ecological construction.

Mots clés : Windproof dune-fixing forest; Pattern; Desert; Solid sand effect;

Présentation (CNKI)

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