| Characteristics of the change of climate factors affecting grass growth in the natural grassland of Gonghe basin |
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| DOI：10.7606/j.issn.1000-7601.2008.06.39 |
| Key Words: natural grassland climate factor climate change Gonghe basin |
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| Abstract: |
| Analysis is made of the tendency, stage and periodicity of the change of climate factors affecting grass growth in the natural grassland of Gonghe basin in the past 47 years.The results showed that, among the various factors, the average temperature and accumulated temperature from April to September presented a significant increasing tendency and cyclical stages;while the accumulated temperature, precipitation, sunshine hours and precipitation in the previous autumn showed a significant oscillating cycle, with the total sunshine hours having 2～6 a oscillating cycle and precipitation in the previous autumn having 1～2 a and 5～6 a oscillating cycles. |
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