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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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青藏高原主要生态系统净初级生产力的估算
DOI: 10.11821/xb200401009, PP. 74-79
Keywords: 青藏高原,净初级生产力,遥感,生态系统
Abstract:
利用青藏高原贡嘎山、海北、五道梁、拉萨等4个野外台站2000~2002年的观测数据、陆地生态系统模型与2001年MODIS遥感数据相结合的方法来估算青藏高原区域的净初级生产力。结果表明青藏高原区域的净初级生产力空间分布趋势表现出由东南向西北逐渐递减的梯度，该趋势也与水热梯度表现基本一致；整个青藏高原的净初级生产力为302.44×1012gCyr-1，其中森林的净初级生产力最高，120.11×1012gCyr-1，占整个高原净初级生产力的39.7％；全年中夏季(6~8月)的净初级生产力最高，246.7×1012gCyr-1，约占全年总净初级生产力的80%。用实测数据验证模拟结果表明，二者非常相符。
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