CN108345973A - 一种基于气象气候条件的森林植被净生产力的推算方法 - Google Patents

一种基于气象气候条件的森林植被净生产力的推算方法 Download PDF

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CN108345973A
CN108345973A CN201710054349.7A CN201710054349A CN108345973A CN 108345973 A CN108345973 A CN 108345973A CN 201710054349 A CN201710054349 A CN 201710054349A CN 108345973 A CN108345973 A CN 108345973A
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net
calculation formula
weather
rdi
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冯仲科
邱梓轩
闫飞凡
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Beijing Forestry University
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Beijing Forestry University
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    • G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
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Abstract

一种基于气象气候条件的森林植被净生产力的推算方法，其特征是：利用某林地的地理因子和气候气象因子，计算该地的年平均温度T、蒸发潜热L、辐射干燥度RDI、年降水量r、太阳净辐照量Rn这5个因素的值，进而推算出该地区的植被净生产力NPP的值。

Description

一种基于气象气候条件的森林植被净生产力的推算方法
一、技术领域
本发明属于森林植被经营领域的技术方法。
二、技术背景
森林及其变化对陆地生物圈和其它地表过程有重要影响。森林生产力作为度量森林生态系统结构和功能协调性以及生物圈的人口承载力的重要指标，是区域和全球尺度碳循环原动力，也是判定碳汇和调节生态过程的主要因子。20世纪60年代中期，国际生物圈计划(IBP)开始森林生态系统生物量和生产力的大规模研究，90年代的国际地圈生物圈计划(IGBP)的核心研究计划全球变化与陆地生态系统(GCTE)及之后的京都协定(KyotoProtocol)都把植被净第一性生产力(NPP)研究确定为核心内容之一。
三、发明内容
一种基于气象气候条件的森林植被净生产力的推算方法，其特征是：植被净生产力受到某地区的地理位置、年平均温度、年降水量、蒸发潜热、辐射干燥度、太阳净辐照量的影响；
某地区的地理位置因子包括经度λ、纬度海拔高度h、坡向θ、坡度β，则该地区年平均温度T的计算公式为：年降水量r的计算公式为式中h0为参考海拔高度；
根据计算的年平均温度T，得到蒸发潜热L的计算公式为：L＝a-b·T，式中a,b分别为系数；
已知可能蒸散率为PER，则辐射干燥度RDI的计算公式为：RDI＝(c+d·PER-g·PER2)2，式中c,d,g分别为系数；
根据计算的年降水量为r、蒸发潜热L以及辐射干燥度RDI，可得到太阳净辐照量Rn的计算公式为：Rn＝RDI·r·L；
则该林地的植被净生产力NPP的计算公式为：
式中k,m分别为系数。
四、具体实施方式
1.计算某地区的年平均温度T，
2.计算该地区的年降水量r，
3.计算该地区的蒸发潜热L，L＝a-b·T；
4.计算辐射干燥度RDI，RDI＝(c+d·PER-g·PER2)2；
5.计算太阳净辐照量Rn，Rn＝RDI·r·L；
6.计算该林地的植被净生产力NPP，

Claims (1)

1.一种基于气象气候条件的森林植被净生产力的推算方法，其特征是：植被净生产力受到某地区的地理位置、年平均温度、年降水量、蒸发潜热、辐射干燥度、太阳净辐照量的影响；
某地区的地理位置因子包括经度λ、纬度海拔高度h、坡向θ、坡度β，则该地区年平均温度T的计算公式为：年降水量r的计算公式为式中h0为参考海拔高度；
根据计算的年平均温度T，得到蒸发潜热L的计算公式为：L＝a-b·T，式中a,b分别为系数；
已知可能蒸散率为PER，则辐射干燥度RDI的计算公式为：RDI＝(c+d·PER-g·PER2)2，式中c,d,g分别为系数；
根据计算的年降水量为r、蒸发潜热L以及辐射干燥度RDI，可得到太阳净辐照量Rn的计算公式为：Rn＝RDI·r·L；
则该林地的植被净生产力NPP的计算公式为：
式中k,m分别为系数。
CN201710054349.7A 2017-01-22 2017-01-22 一种基于气象气候条件的森林植被净生产力的推算方法 Withdrawn CN108345973A (zh)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104166782A (zh) * 2014-06-05 2014-11-26 刘健 一种林地土壤有机碳遥感估测的方法
CN104517037A (zh) * 2014-12-23 2015-04-15 中国科学院遥感与数字地球研究所 一种生态承载力的遥感估算方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104166782A (zh) * 2014-06-05 2014-11-26 刘健 一种林地土壤有机碳遥感估测的方法
CN104517037A (zh) * 2014-12-23 2015-04-15 中国科学院遥感与数字地球研究所 一种生态承载力的遥感估算方法

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