国土资源遥感
國土資源遙感
국토자원요감
REMOTE SENSING FOR LAND & RESOURCES
2015年
4期
171-178
,共8页
白淑英%吴奇%史建桥%顾海敏
白淑英%吳奇%史建橋%顧海敏
백숙영%오기%사건교%고해민
青藏高原%被动微波遥感%Mann-Kendall检验%地形因子
青藏高原%被動微波遙感%Mann-Kendall檢驗%地形因子
청장고원%피동미파요감%Mann-Kendall검험%지형인자
Tibetan Plateau%passive microwave remote sensing%Mann-Kendall test%terrain factor
利用1979—2010年逐日中国雪深长时间序列数据集，采用GIS空间分析和Mann-Kendall检验等方法，分析了青藏高原雪深时空分布及其与地形的关系。结果表明：青藏高原雪深分布受地形影响明显，在5—9月平均雪深主要受到高程影响，在其他月份则受气温和高程共同影响；同一高程带雪深的变幅反映坡度和坡向对雪深的影响，变幅越宽坡向影响越大；最大雪深随高程和坡度的增加而增加，空间变异随高程的增加而下降，随坡度的增加而呈上升趋势；从10月至翌年5月，平均雪深在高程82~2482 m和6082~7682 m受坡度和坡向影响较高程2482~6082 m要偏大；回归分析表明，高原雪深分布受到高程和坡度的双重影响，高程是雪深分布的主要影响因子，在高程82~3282 m区间，坡度的空间差异对平均雪深空间变异的影响具有明显正效应。
利用1979—2010年逐日中國雪深長時間序列數據集，採用GIS空間分析和Mann-Kendall檢驗等方法，分析瞭青藏高原雪深時空分佈及其與地形的關繫。結果錶明：青藏高原雪深分佈受地形影響明顯，在5—9月平均雪深主要受到高程影響，在其他月份則受氣溫和高程共同影響；同一高程帶雪深的變幅反映坡度和坡嚮對雪深的影響，變幅越寬坡嚮影響越大；最大雪深隨高程和坡度的增加而增加，空間變異隨高程的增加而下降，隨坡度的增加而呈上升趨勢；從10月至翌年5月，平均雪深在高程82~2482 m和6082~7682 m受坡度和坡嚮影響較高程2482~6082 m要偏大；迴歸分析錶明，高原雪深分佈受到高程和坡度的雙重影響，高程是雪深分佈的主要影響因子，在高程82~3282 m區間，坡度的空間差異對平均雪深空間變異的影響具有明顯正效應。
이용1979—2010년축일중국설심장시간서렬수거집，채용GIS공간분석화Mann-Kendall검험등방법，분석료청장고원설심시공분포급기여지형적관계。결과표명：청장고원설심분포수지형영향명현，재5—9월평균설심주요수도고정영향，재기타월빈칙수기온화고정공동영향；동일고정대설심적변폭반영파도화파향대설심적영향，변폭월관파향영향월대；최대설심수고정화파도적증가이증가，공간변이수고정적증가이하강，수파도적증가이정상승추세；종10월지익년5월，평균설심재고정82~2482 m화6082~7682 m수파도화파향영향교고정2482~6082 m요편대；회귀분석표명，고원설심분포수도고정화파도적쌍중영향，고정시설심분포적주요영향인자，재고정82~3282 m구간，파도적공간차이대평균설심공간변이적영향구유명현정효응。
Using the daily dataset of snow depth from 1979 to 2010 , the authors analyzed the relationship between the spatial and temporal distribution of snow depth and the terrain factors over the Tibetan Plateau by means of Mann-Kendall test and GIS space analysis. According to the results achieved, the distribution of snow depth was significantly affected by topography, the average snow depth was affected mainly by elevation from May to September, whereas in other months it was under the common influence of temperature and elevation. The snow depth amplitude of the same segment elevation reflected the impact of the aspect on snow depth, and the influence was greater when the amplitude was wider. The maximum snow depth kept increasing with the increment of elevation and slope, while the spatial heterogeneity decreased with the increment of elevation but increased with the decrement of slope. From October to May of the next year, the average snow depth at the elevation from 82 to 2 482 meter and 6 082 to 7 682 meter was more affected by slope and aspect than that at the elevation from 2 482 to 6 082 meter. Multiple regression analysis showed that the distribution of snow depth over the Tibetan Plateau was influenced by elevation and slope;furthermore, spatial differences of slope at the elevation of 82~3 282 meter had significant positive effect on the spatial variability of average snow depth; nevertheless, elevation was the main limiting factor of the average snow depth.
