干旱气象
榦旱氣象
간한기상
GANSU METEOROLOGY
2014年
4期
582-587,607
,共7页
0~20 cm 地温%沙尘日数%河西走廊东部
0~20 cm 地溫%沙塵日數%河西走廊東部
0~20 cm 지온%사진일수%하서주랑동부
0-20 cm soil temperature%sand-dust days%east of Hexi Corridor
利用河西走廊东部民勤、凉州、永昌3个气象站1960～2010年冬季0、5、10、15、20 cm地温和1961～2011年春季沙尘暴和扬沙天气的常规观测资料，分析了河西走廊东部冬季浅层地温和春季沙尘天气日数的时空特征，进而探讨了春季沙尘天气与冬季浅层地温的关系。结果表明：受海拔高度、地理位置等影响，河西走廊东部冬季浅层地温有明显地域差异，其中高海拔的永昌最低，低海拔的民勤次之，而海拔介于民勤和永昌之间的凉州最高；春季沙尘天气日数自低海拔地区向高海拔地区逐渐减少，即民勤最多、凉州区次之、永昌最少；河西走廊东部的沙尘天气日数与浅层地温在空间上呈一定的负相关，二者的年变化趋势明显相反，即冬季浅层地温总体呈逐年升高的趋势，而春季沙尘日数呈逐年减少的趋势，且都存在6～7 a和9～10 a的周期；相关分析表明，河西走廊东部春季沙尘日数与冬季浅层地温呈负相关，其中与0 cm地温的相关性最显著。
利用河西走廊東部民勤、涼州、永昌3箇氣象站1960～2010年鼕季0、5、10、15、20 cm地溫和1961～2011年春季沙塵暴和颺沙天氣的常規觀測資料，分析瞭河西走廊東部鼕季淺層地溫和春季沙塵天氣日數的時空特徵，進而探討瞭春季沙塵天氣與鼕季淺層地溫的關繫。結果錶明：受海拔高度、地理位置等影響，河西走廊東部鼕季淺層地溫有明顯地域差異，其中高海拔的永昌最低，低海拔的民勤次之，而海拔介于民勤和永昌之間的涼州最高；春季沙塵天氣日數自低海拔地區嚮高海拔地區逐漸減少，即民勤最多、涼州區次之、永昌最少；河西走廊東部的沙塵天氣日數與淺層地溫在空間上呈一定的負相關，二者的年變化趨勢明顯相反，即鼕季淺層地溫總體呈逐年升高的趨勢，而春季沙塵日數呈逐年減少的趨勢，且都存在6～7 a和9～10 a的週期；相關分析錶明，河西走廊東部春季沙塵日數與鼕季淺層地溫呈負相關，其中與0 cm地溫的相關性最顯著。
이용하서주랑동부민근、량주、영창3개기상참1960～2010년동계0、5、10、15、20 cm지온화1961～2011년춘계사진폭화양사천기적상규관측자료，분석료하서주랑동부동계천층지온화춘계사진천기일수적시공특정，진이탐토료춘계사진천기여동계천층지온적관계。결과표명：수해발고도、지리위치등영향，하서주랑동부동계천층지온유명현지역차이，기중고해발적영창최저，저해발적민근차지，이해발개우민근화영창지간적량주최고；춘계사진천기일수자저해발지구향고해발지구축점감소，즉민근최다、량주구차지、영창최소；하서주랑동부적사진천기일수여천층지온재공간상정일정적부상관，이자적년변화추세명현상반，즉동계천층지온총체정축년승고적추세，이춘계사진일수정축년감소적추세，차도존재6～7 a화9～10 a적주기；상관분석표명，하서주랑동부춘계사진일수여동계천층지온정부상관，기중여0 cm지온적상관성최현저。
Based on the shallow soil temperature at 0 cm,5 cm,10 cm,15 cm and 20 cm depths in winter during 1960-2010 and the sand-dust days in spring during 1961 -2011 from Minqin,Liangzhou and Yongchang meteorological stations in east of Hexi Corridor, the temporal and spatial distribution characteristics of winter shallow soil temperature and spring sand-dust days were analyzed,and their relationship was discussed.The results showed that the spatial distribution of soil temperature at different depths had obvious dis-tinction due to the altitude and geographic location influence.The winter shallow soil temperature in Yongchang with the highest alti-tude was the lowest,and that in Minqin with the lowest altitude was lower,while that in Liangzhou with altitude between Minqin and Yongchang was the highest.The spring sand-dust days decreased gradually from low altitude areas to high altitude areas,and it was the most in Minqin and the fewest in Yongchang.The annual changes of spring sand-dust days and winter shallow soil temperature were obviously contrary,and there were an increasing trend of winter soil temperature and decreasing trend of spring sand-dust days. The vibration periods of them were 6-7 years and 9-10 years.The sand-dust days had significant negative relation with soil temper-ature at different depths,especially for 0 cm soil temperature,the correlation was the most significant.
