| Impact of ground temperature changing on growing of crops in the loess plateau of Xifeng Gansu |
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| DOI：10.7606/j.issn.1000-7601.2008.02.45 |
| Key Words: characters of ground temperature growth period of crops analysis of influence loess plateau in Xifeng,Gansu |
| Author Name | Affiliation | | GUO Jiangyong | Lanzhou Institute of Arid Meteorology Key and Open Laboratory of Arid Climate Change and Reducing Disaster China Meteorological A dministration Key Laboratory of Arid climate Change and Reducing Disaster of Gansu Province，Lanzhou,Gansu 730020,China；Qingyang Meteorological Bureau,Qingyang,Gansu 745000,China | | LIN Shu | Lanzhou Institute of Arid Meteorology Key and Open Laboratory of Arid Climate Change and Reducing Disaster China Meteorological A dministration Key Laboratory of Arid climate Change and Reducing Disaster of Gansu Province，Lanzhou,Gansu 730020,China；Lanzhou Regional Climate Center, Lanzhou,Gansu 730020,China |
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| Abstract: |
| ith phenological data of 5,10,15 and 20cm ground temperature from 1971～2005,winter wheat development period from 1981～2005 and apple and pear trees from 1984～2005 in Xifeng loess plateau,effect of temperature change on phenological stages is analyzed.The results show that the 10 cm temperature in every season showed a trend of continous rise,of which the rate of warming and range of variation in spring was the most obvious,then winter,followed by autumn,and summer the least.Temperature and phenology were negatively correlated,winter wheat development period with the most significant is the milky stage-0.57～-0.65.Apple development period with the most significant of maturity of0.48～-0.60,pear development period with the most significant change is only leaves and flowering period for-0.41～-0.52.Spring wheat development period with the most significant is reviving-0.60～-0.63.Apple development period with the most significant is the opening period and leaf bud,leaf for-0.66～-0.68.Pear development period with the most significant is the flowering period-0.68～-0.69.The study indicated that the influence of ground temperature in winter on growing of crops lasted longer than that of ground temperature in spring,the growth period of crops was impacted by ground temperature in spring more than by ground temperature in winter. |
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