| 摘要: | 本研究應用1999~2003年間之SPOT衛星遙測資料，監測關渡平原21個水稻樣區常態化差異性植生指數NDVI之季節性變化；並以灰關聯理論分析五種氣象因子（即累積降雨量、平均相對溼度、日照率、平均氣溫、與累積全天日射量）及七種空氣品質監測項目（包括SO2、O3、NO(下標 x)、NO2、CO及PM10）對關渡平原水稻衛星遙測NDVI之相關性。灰關聯度與灰序顯示，影響關渡平原水稻生長之二大類環境因子中，明顯的以五種氣象因子為主，而以七種環境品質監測項目為次。在五種氣象因子中，又以太陽相關因子（sun-related factors: 即日射量、氣溫及日照率）為主，而與水分相關因子(water-related factors)（即溼度及降雨量）則為次。七種空氣品質監測項目中，則以SO2及CO為主，其次為氮氧化合物即NO(下標 x)、NO、NO2，O3及PM10則殿後。此顯示，北投垃圾焚化廠之排放氣體與粒狀物對關渡平原水稻生長若有影響，其程度遠不及氣象因子所造成之影饗；而且若有影響，其中以SO2及CO之效應較大，其它為次。
his research studied the seasonal change of normalized difference vegetation index (NDVI) of rice canopy monitored by the SPOT satellite remote sensing imagery between 1999 and 2003, and applied the grey system theory to analyze the relationship between rice NDVI and five climate factors including monthly cumulative precipitation, monthly mean relative humidity, daily insolation percentage, monthly mean temperature and daily cumulative irradiance and seven air quality factors, such as SO2, O3, NO(subscript x), NO, NO2, CO and PM10. The grey relation value and grey order indicated that climate factors play a more important role in determining rice growth than air quality factors at Guandu Plain. Among the five climate factors, the sun related factors (irradiance, temperature and insolation) contribute more to rice satellite NDVI than the water-related factors (humidity and precipitation). Among the seven air quality factors, SO2 and CO contribute more than those of NO(subscript x), NO and NO2. O3 and PM10 are the last. According to the grey system theory, the waste gas and particles released by the Beitou Garbage Incinerator make much less contribution degree than the natural climate factors to the rice growth at Guandu Plain, even ii the effects are still shown. |
