The 2009/10 Drought in China: Possible Causes and Impacts on Vegetation
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Citations
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Influence of the South Pacific decadal variability on Southeast China rainfall during boreal autumn
River Runoff Modelling and Hydrological Drought Assessment Based on High-Resolution Brightness Temperatures in Mainland China
Remote sensing estimation of forage mass and spatiotemporal change analysis in the Beijing-Tianjin sandstorm source region, China
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References
The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation
Annular Modes in the Extratropical Circulation. Part I: Month-to-Month Variability*
Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
Characteristics of maximum-value composite images from temporal AVHRR data
The impacts of climate change on water resources and agriculture in China
Related Papers (5)
Frequently Asked Questions (13)
Q2. What is the effect of the lack of precipitation on the growing season of 2010?
successive months with lack of precipitation resulted in pronounced anomalies in theaccumulated precipitation totals (Fig. 2a), thereby affecting the growing season of 2010 crops (Fig. 9b) by presumably reducing soil moisture and impeding the germination of seeds.
Q3. What was the period with deficit of precipitation in 2009/10?
The period with deficit of precipitation started in May 2009 and lasted until October 2009 in N China, further persisting until March 2010 in SW China.
Q4. How many months of drought were affected by the cultivated–managed areas?
cultivated–managed areas lying between the estuaries of the Yellow and Yangtze Rivers (box labeled as CE in Fig. 8) also experienced several months of persistently stressed vegetation, as discussed below.
Q5. What is the effect of low temperatures on the NDVI?
The NDVI can also reflect temperature anomalies since low minimum temperatures during the growing season causedamage to crops (e.g., Tao et al. 2008).
Q6. What is the climatological normal for the accumulated rainfall in China?
when annual totals are considered N China shows a stronger dependence on summer rainfall, with July–August precipitation accounting for more than half of the annual totals.
Q7. What is the effect of the reduction of storage water in damns?
The reduction of storage water in damns was also potentially responsible for negative responses in downstream croplands of the Yangtze and Pearl Rivers.
Q8. What is the spatial domain of these sectors?
The spatial domain of these sectors is further supported by a clustering analysis based on observational precipitation stations in China (Song et al. 2007).
Q9. What are the objectives of this paper?
In more detail, the objectives are (i) to characterize the temporal and spatial extent of this extreme drought event, (ii) to assess the regional precipitation deficits in terms of the associated atmospheric circulation anomalies, and (iii) to evaluate some socioeconomic impacts of this extreme drought episode, particularly on vegetation greenness and hydroelectrical production.
Q10. What is the effect of the accumulated precipitation on the valleys of the major rivers?
the negative impacts on the valleys of the major rivers, where the accumulated precipitation did not show remarkable deficiencies, is well explained by the dominance of multicropping rotations within the year, water intensive crops, and their stronger sensitivity to precipitation in other seasons than summer.
Q11. What is the climatological norm for the accumulated rainfall in N China?
This implies that dry summer conditions in N China are expected to be reflected on the accumulated totals, while a dry summer monsoon in SW can be compensated by near-normal precipitation in other seasons.
Q12. What was the effect of the drought on the cultivated land in N China?
As discussed in section 3, the drought episode in N (SW) China was characterized by stronger deficits of precipitation during the peak (post) monsoon season of 2009.
Q13. What is the effect of the lack of precipitation on the vegetation in the summer?
Taking into account the dependence of crops to growing season precipitation, the earlier deficit of summer precipitation in N China (as compared to its climatological maximum in vegetative activity) would explain the negative impacts in summer farmlands vegetation greenness of this area.