【摘要】 在 Ｇ Ｉ Ｓ和 Ｒ Ｓ支持下，利用地面气象数据和 Ｎ Ｏ Ａ Ａ－ Ａ Ｖ Ｈ Ｒ Ｒ Ｎ Ｄ Ｖ Ｉ数据估计了广东省植被在 １９９２０４～１９９３０３间吸收的 Ｐ Ａ Ｒ，并分析了其时空分布特征以及不同类型植被对 Ｐ Ａ Ｒ 的吸收特征。结果表明：在此期间，广东省植被年 Ａ Ｐ Ａ Ｒ介于 ０～１５７５ Ｍ Ｊ／ｍ ２ａ 之间，其最大 Ｎ Ｐ Ｐ不及全球最高值的一半；并且，广东省年 Ａ Ｐ Ａ Ｒ 的时空变化显著，这主要与植被自身性质和太阳辐射的时空变化有关；即使是常绿阔叶林，其年 Ａ Ｐ Ａ Ｒ 也有显著差异，并且吸收 Ｐ Ａ Ｒ 的年变化显著，全年以 ７、１０ 月份吸收的 Ｐ Ａ Ｒ 量最高。更多还原

【Abstract】 The ground meteorological data and AVHRR NDVI data have been used to assess the absorbed photosynthetically active radiation(APAR)by the vegetation in Guangdong,China.By the aid of WeatherMan program,the ground meteorological data was used to calculate the PAR and GIS(ARC/INFO)interpolation tools were exploited to create spatial surface of PAR from point layer.Then we estimated the fraction of PAR absorbed for each month during 1992 04～1993 03.The results showed that during this period,the annual APAR in Gaungdong ranged from 0～1575 MJ/ma,and the maximum Net Primary Production (NPP)in Guangdong was not half as high as the maximum NPP in the world.The seasonal variations of APAR in Guangdong were obvious because of the different nature of the vegetation and the seasonal variations of solar radiation.In the evergreen broadleaf forests,different subtypes did not have the same annual APAR,and all of them absorbed PAR more in July and October than in any other months.更多还原