نتایج جستجو برای: combating desertification

تعداد نتایج: 8532  

Journal: :Ecology 2009
S Kéfi C L Alados R C G Chaves Y Pueyo M Rietkerk

The monitoring of desertification processes, and particularly the development of "early-warning" systems, is an increasingly important development in the management of drylands. It has been shown that the patch size distribution of dryland vegetation can be described using power laws and that deviations from such patterns may be used as an early-warning signal for the onset of desertification. ...

2008

Germany has made the United Nations Convention to Combat Desertification (UNCCD) since its creation an instrument of choice for its policy to combat desertification and drought and for sustainable management of land. More then ten years after the Convention has entered into force in 1996, Germany continues to view it as a key reference point and strategic instrument of its development cooperation.

2017
Jie Lian Xueyong Zhao Xin Li Tonghui Zhang Shaokun Wang Yongqing Luo Yangchun Zhu Jing Feng

Vegetation dynamics are an important topic in the field of global environment change, which is of great significance to monitor temporal–spatial variability of desertification at regional or global scales. Following the reported desertification reversion in the late 1990s in the Horqin Sandy Land, an issue was concerned for desertification control by decreased water availability. To detect the ...

2002
Victor R. Squires

Desertification is a major human tragedy, affecting the daily lives of about 1 billion people. It is this aspect of desertification that deserves further consideration. As a humanitarian effort it is an opportunity, and an obligation, for the industrialized nations to transfer financial support and technical assistance to those countries worst affected by land degradation in all its forms. Dese...

Journal: :Agronomy 2021

This study investigated the effects of consolidated soil layer (CSL) composed fly ash (FA) and polyacrylamide (PAM) on growth Artemisia ordosica through plot experiments in Inner Mongolia, North China. It could provide a feasibility reference for ecological restoration combating desertification desert areas. The germination characteristics were studied control 6 kinds CSL, which formed with 3 a...

2007
Cui Linli Fan Wenyi Zhiqiang Gao

Desertification is a worldwide concern and the assessment of aeolian desertification has become one hotspot in global ecosystem research. In this paper, hyperspectral data acquired from modular OMIS-I imaging spectrometer, combined with ETM data and field survey data, was used to assess the aeolian desertification in Korqin Sand, Inner Mongolia, China by pixel-level. The results indicated that ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Armel T Kaptué Lara Prihodko Niall P Hanan

Over many decades our understanding of the impacts of intermittent drought in water-limited environments like the West African Sahel has been influenced by a narrative of overgrazing and human-induced desertification. The desertification narrative has persisted in both scientific and popular conception, such that recent regional-scale recovery ("regreening") and local success stories (community...

2017
Carlos Arturo Aguirre-Salado Eduardo Javier Treviño-Garza Oscar Alberto Aguirre-Calderón Javier Jiménez-Pérez Marco Aurelio González-Tagle José René Valdez-Lazalde Luis Potosí

Journal: :Journal of environmental management 2012
Lihua Yang Jianguo Wu

Understanding institutional changes is crucial for environmental management. Here we investigated how institutional changes influenced the process and result of desertification control in northern China between 1949 and 2004. Our analysis was based on a case study of 21 field sites and a meta-analysis of additional 29 sites reported in the literature. Our results show that imposed knowledge-dri...

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