干旱地区农业研究
榦旱地區農業研究
간한지구농업연구
Agricultural Research In The Arid Areas
2015年
5期
154-162
,共9页
康燕霞%齐广平%殷长琛%贾涪钧
康燕霞%齊廣平%慇長琛%賈涪鈞
강연하%제엄평%은장침%가부균
参考作物蒸散量%成因分析%云模型%通径分析%指标敏感性分析
參攷作物蒸散量%成因分析%雲模型%通徑分析%指標敏感性分析
삼고작물증산량%성인분석%운모형%통경분석%지표민감성분석
reference evapotranspiration(ET0)%causes analysis%cloud model%Path analysis%sensitivity analysis of indicators
为了探寻甘肃省参考作物蒸散量（ ET0）的变化特征及其影响因子，利用甘肃省29个气象测站1951—2013年的观测资料，采用FAO－Penman－Monteith（98）公式计算甘肃省不同区域的 ET0，并依靠线性趋势方程、云模型、通径分析和指标敏感性分析方法对 ET0时空分异特征和影响因子进行分析。结果表明：甘肃省 ET0以2．11 mm ·10a－1的倾向率呈现出增长趋势，除河西地区以0．71 mm·10a－1的倾向率呈递减趋势外，其余三个地区均呈增长状态。 ET0空间分布总体上呈现为西北地区大于东南地区，河西地区最为离散、不稳定，陇东地区最为均匀、稳定。ET0的主要影响因子具有空间变异性，河西和陇南地区为平均温度，陇中和陇东地区为平均相对湿度和日照时数。但是 ET0的变化是多因素共同影响的结果，平均风速是河西地区和陇东地区的另一主要影响因素，陇中地区为平均相对湿度，陇南为日照时数。
為瞭探尋甘肅省參攷作物蒸散量（ ET0）的變化特徵及其影響因子，利用甘肅省29箇氣象測站1951—2013年的觀測資料，採用FAO－Penman－Monteith（98）公式計算甘肅省不同區域的 ET0，併依靠線性趨勢方程、雲模型、通徑分析和指標敏感性分析方法對 ET0時空分異特徵和影響因子進行分析。結果錶明：甘肅省 ET0以2．11 mm ·10a－1的傾嚮率呈現齣增長趨勢，除河西地區以0．71 mm·10a－1的傾嚮率呈遞減趨勢外，其餘三箇地區均呈增長狀態。 ET0空間分佈總體上呈現為西北地區大于東南地區，河西地區最為離散、不穩定，隴東地區最為均勻、穩定。ET0的主要影響因子具有空間變異性，河西和隴南地區為平均溫度，隴中和隴東地區為平均相對濕度和日照時數。但是 ET0的變化是多因素共同影響的結果，平均風速是河西地區和隴東地區的另一主要影響因素，隴中地區為平均相對濕度，隴南為日照時數。
위료탐심감숙성삼고작물증산량（ ET0）적변화특정급기영향인자，이용감숙성29개기상측참1951—2013년적관측자료，채용FAO－Penman－Monteith（98）공식계산감숙성불동구역적 ET0，병의고선성추세방정、운모형、통경분석화지표민감성분석방법대 ET0시공분이특정화영향인자진행분석。결과표명：감숙성 ET0이2．11 mm ·10a－1적경향솔정현출증장추세，제하서지구이0．71 mm·10a－1적경향솔정체감추세외，기여삼개지구균정증장상태。 ET0공간분포총체상정현위서북지구대우동남지구，하서지구최위리산、불은정，롱동지구최위균균、은정。ET0적주요영향인자구유공간변이성，하서화롱남지구위평균온도，롱중화롱동지구위평균상대습도화일조시수。단시 ET0적변화시다인소공동영향적결과，평균풍속시하서지구화롱동지구적령일주요영향인소，롱중지구위평균상대습도，롱남위일조시수。
In order to explore the changing characteristics and its influence factors for the reference evapotranspi-ration ( ET0 ) in Gansu Province ,using the observed data during 1951—2013 from 29 meteorological stations in Guansu Province ,adopted the FAO-Penman-Monteith formula to calculate the ET0 in different regions ,also analyzed the tem-poral-spatial differential feature of ET0 depended on the linear trend equation ,cloud mode ,Path analysis and sensitivity analysis of indicators methods .The results showed that:The ET0 in Guansu Province was appeared an increasing tenden-cy by the inclination rate of 2 .11 mm·10a-1 .Except Hexi region was appeared a decrease tendency by the inclination rate of 0 .71 mm·10a-1 .Other three regions were total appeared an increasing tendency .In general the spatial distribu-tion of ET0 was presented the northwest area large than the southeast area ,the Hexi region was the most discrete and in-stability ,the Longdong region was the best homogeneity and stability .The main influence factors for ET0 were possessed the spatial variability .In Hexi and Longnan region was the average temperature ,and in Longzhong and Longdong region was the average relative humidity and sunshine hours .However ,the variety of ET0 was the result by many factors ,the mean wind speed was the other main influence factor in Hexi and Longdong regions ,and the mean relative humidity was in Longzhong region ,and the sunshine hours was in Longnan region .
