Responses of Net Primary Productivity to Precipitation in Forests Dominated by Different Mycorrhizal Types

SHI Zhao-yong; ZHANG Kai; MIAO Yan-fang; WANG Fa-yuan

doi:10.13961/j.cnki.stbctb.2014.01.001

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Responses of Net Primary Productivity to Precipitation in Forests Dominated by Different Mycorrhizal Types

- Responses of Net Primary Productivity to Precipitation in Forests Dominated by Different Mycorrhizal Types
- Bulletin of Soiland Water Conservation Vol. 33, Issue 1, Pages: 14-19(2014)
- 作者机构：
  
  1. 河南科技大学农学院,河南,洛阳,471003
  2. 北京大学地表过程分析与模拟教育部重点实验室,北京,100871
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.01.001
  CLC：
- Published：2014
- 稿件说明：
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SHI Zhao-yong, ZHANG Kai, MIAO Yan-fang, et al. Responses of Net Primary Productivity to Precipitation in Forests Dominated by Different Mycorrhizal Types[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 14-19.
DOI：

SHI Zhao-yong, ZHANG Kai, MIAO Yan-fang, et al. Responses of Net Primary Productivity to Precipitation in Forests Dominated by Different Mycorrhizal Types[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 14-19. DOI： 10.13961/j.cnki.stbctb.2014.01.001.

摘要

基于全球森林数据库

建立了包括全球森林的菌根类型、净初级生产力(NPP)和年平均降水量等指标的新数据库

分析了6种菌根类型森林的各组分NPP对年平均降水量变化的响应。结果表明

在所有菌根类型的森林中

森林总NPP、地上NPP和树叶NPP都随年平均降水量的升高呈现上升的趋势;地下NPP、树木主干NPP以及细根和粗根NPP则因菌根类型的不同

对年平均降水量的增加呈现出降低或升高的趋势。从全球森林总NPP随年平均降水量变化的响应程度来看

年平均降水量对丛枝菌根+外生菌根类型森林总NPP变异的解释率最高

为31.79%;而对外生菌根+内外生菌根类型森林的解释率则最低

仅为4.85%。可见

菌根影响着森林NPP对降水量变化的响应程度

表明菌根类型是预测降水变化对森林NPP影响的重要指标。

Abstract

A new database was established

including the indexes such as different mycorrhizal types

net primary production(NPP) and average annual precipitation(MAP) of forests

based on the global forest database. The new database was used to study the responses of NPP of the forests to MAP change. Of all forests dominated by six different mycorrhizal types

the total NPP

aboveground NPP and tree leaf NPP increased with increasing MAP. However

the belowground NPP

stem NPP

and fine and coarse NPP presented a trend of either increase or decrease with the enhancement of MAP in the forests. As far as the responses of forest total NPP to MAP change concerned

the highest explanation(31.79%) of MAP change to the variation of total NPP was observed in the forest dominated by arbuscular mycorrhiza+ecto-mycorrhiza type. Contrarily

the MAP change only explained the 4.85% of the variation of total NPP in the forest dominated by ecto-mycorrhiza+ectendomycorrhiza type

which was the lowest explanation in all the six forests. We conclude that different mycorrhizas affect the extent of response of forest NPP to MAP change. Mycorrhizal type is an important index for accurate prediction of future change of forest NPP with change of precipitation.

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