兰州大学学报（自然科学版）
蘭州大學學報（自然科學版）
란주대학학보（자연과학판）
JOURNAL OF LANZHOU UNIVERSITY（NATURAL SCIENCES）
2014年
3期
338-347
,共10页
赵琛%张兰慧%李金麟%田杰%吴维臻%金鑫%张喜风%蒋忆文%王晓磊%贺缠生%白晓
趙琛%張蘭慧%李金麟%田傑%吳維臻%金鑫%張喜風%蔣憶文%王曉磊%賀纏生%白曉
조침%장란혜%리금린%전걸%오유진%금흠%장희풍%장억문%왕효뢰%하전생%백효
黑河上游%土壤含水量%空间分布%环境因子%地统计%旋转主成分分析
黑河上遊%土壤含水量%空間分佈%環境因子%地統計%鏇轉主成分分析
흑하상유%토양함수량%공간분포%배경인자%지통계%선전주성분분석
upstream of Heihe River watershed%soil moisture%spatial variation%environmental factor%geosta-tistical analysis%rotated principal component analysis
通过原位观测及大范围多尺度采集位于青藏高原北缘的祁连山地黑河上游土壤含水量数据，得到土壤含水量的空间分布，并运用旋转主成分分析法分析影响黑河上游土壤含水量的主要环境因子。结果表明：在黑河上游，影响土壤含水量的主要因子是地形因子，土壤物理属性与土壤含水量之间的相关关系不显著；地形因子中坡度和坡向与土壤含水量呈显著负相关，土壤含水量在坡向作用下呈现北坡高于南坡的趋势，海拔与土壤含水量呈现显著的正相关关系。
通過原位觀測及大範圍多呎度採集位于青藏高原北緣的祁連山地黑河上遊土壤含水量數據，得到土壤含水量的空間分佈，併運用鏇轉主成分分析法分析影響黑河上遊土壤含水量的主要環境因子。結果錶明：在黑河上遊，影響土壤含水量的主要因子是地形因子，土壤物理屬性與土壤含水量之間的相關關繫不顯著；地形因子中坡度和坡嚮與土壤含水量呈顯著負相關，土壤含水量在坡嚮作用下呈現北坡高于南坡的趨勢，海拔與土壤含水量呈現顯著的正相關關繫。
통과원위관측급대범위다척도채집위우청장고원북연적기련산지흑하상유토양함수량수거，득도토양함수량적공간분포，병운용선전주성분분석법분석영향흑하상유토양함수량적주요배경인자。결과표명：재흑하상유，영향토양함수량적주요인자시지형인자，토양물리속성여토양함수량지간적상관관계불현저；지형인자중파도화파향여토양함수량정현저부상관，토양함수량재파향작용하정현북파고우남파적추세，해발여토양함수량정현현저적정상관관계。
The relationships were analyzed between the spatial distribution of soil moisture and the environ-mental factors in the upstream of the Heihe River watershed in Northwest China. Both in-situ and random soil samples were collected across the entire study area to determine the soil texture and moisture content in August 2012. Satellite images, DEM, land cover, and soil databases were used to derive the normalized differ-ential vegetation index (NDVI), slope, aspect, and vegetation covers, etc. using geographic information systems (GIS). Geostatistical analysis and rotated principal component analysis (RPCA) were conducted to derive the relationships between the soil moisture content and related environmental variables. The results showed that topography was the main factor affecting the spatial variations of soil moisture in the study area, the slope gradient and aspect were negatively correlated to the soil moisture content and the soil water content was higher in the north-faced slope than in the south-faced slope in the upstream of the Heihe River watershed.
