Seasonal changes in soil heat flux for a Lei bamboo forest with straw mulching

CHEN Yunfei; JIANG Hong; ZHOU Guomo; YANG Shuang; CHEN Jian

doi:10.11833/j.issn.2095-0756.2013.02.002

Volume 30 Issue 2

Mar. 2013

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CHEN Yunfei, JIANG Hong, ZHOU Guomo, YANG Shuang, CHEN Jian. Seasonal changes in soil heat flux for a Lei bamboo forest with straw mulching[J]. Journal of Zhejiang A&F University, 2013, 30(2): 165-171. doi: 10.11833/j.issn.2095-0756.2013.02.002

Citation:

CHEN Yunfei, JIANG Hong, ZHOU Guomo, YANG Shuang, CHEN Jian. Seasonal changes in soil heat flux for a Lei bamboo forest with straw mulching[J]. Journal of Zhejiang A&F University, 2013, 30(2): 165-171. doi: 10.11833/j.issn.2095-0756.2013.02.002

Seasonal changes in soil heat flux for a Lei bamboo forest with straw mulching

doi: 10.11833/j.issn.2095-0756.2013.02.002

1.
Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;
2.
International Institute for Earth System Science，Nanjing University，Nanjing 210093，Jiangsu，China

More Information

Corresponding author: JIANG Hong
Received Date: 2012-04-05
Rev Recd Date: 2012-04-28
Publish Date: 2013-04-20

Abstract

The soil heat flux and meteorological factors of a Lei bamboo （Phyllostachys violascens） forest with straw mulching in Taihuyuan，Linan City，Zhejiang Prvince from October 2010 to September 2011 were measured. A regression analysis between heat flux and average monthly soil temperature and between monthly soil heat flux and net radiation was conducted for depths of 5，50 and 100 cm，using soil heat flux plates （SHFP） and a meteorological monitoring system. Results indicated that for a depth of 5 cm，diurnal change in the soil heat flux on a monthly basis showed as an S curve. The soil acted as a heat resource with an annual net heat flux of －20.01 MJm－2. The average monthly soil heat flux was from －6.2% to 3.5% of the net monthly radiation with the annual average monthly soil heat flux accounting for －0.67% of the net monthly radiation. The regression showed that soil heat flux was significantly （P＜0.05） related to temperature at the 5 cm depth. Also，there was a significant relationship between average monthly soil heat flux and net radiation （P＜0.05）. From December to the following March in the Lei bamboo forest，soil with straw mulching was a heat source，and the negative values of soil heat flux were reduced. Thus，the regression revealed that changes in soil temperature were based on changes of soil heat fluxes，and with straw mulching radiant/light energy of the soil was reduced.［Ch，5 fig. 16 ref.］
- forest ecology,
- Lei bamboo （Phyllostachys violascens）,
- temperature increase effect of mulch,
- soil heat flux,
- net radiation

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Seasonal changes in soil heat flux for a Lei bamboo forest with straw mulching

1. Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. International Institute for Earth System Science，Nanjing University，Nanjing 210093，Jiangsu，China

Corresponding author: JIANG Hong

Received Date: 2012-04-05

Rev Recd Date: 2012-04-28

Publish Date: 2013-04-20

Key words:

Abstract: The soil heat flux and meteorological factors of a Lei bamboo （Phyllostachys violascens） forest with straw mulching in Taihuyuan，Linan City，Zhejiang Prvince from October 2010 to September 2011 were measured. A regression analysis between heat flux and average monthly soil temperature and between monthly soil heat flux and net radiation was conducted for depths of 5，50 and 100 cm，using soil heat flux plates （SHFP） and a meteorological monitoring system. Results indicated that for a depth of 5 cm，diurnal change in the soil heat flux on a monthly basis showed as an S curve. The soil acted as a heat resource with an annual net heat flux of －20.01 MJm－2. The average monthly soil heat flux was from －6.2% to 3.5% of the net monthly radiation with the annual average monthly soil heat flux accounting for －0.67% of the net monthly radiation. The regression showed that soil heat flux was significantly （P＜0.05） related to temperature at the 5 cm depth. Also，there was a significant relationship between average monthly soil heat flux and net radiation （P＜0.05）. From December to the following March in the Lei bamboo forest，soil with straw mulching was a heat source，and the negative values of soil heat flux were reduced. Thus，the regression revealed that changes in soil temperature were based on changes of soil heat fluxes，and with straw mulching radiant/light energy of the soil was reduced.［Ch，5 fig. 16 ref.］

Seasonal changes in soil heat flux for a Lei bamboo forest with straw mulching

doi: 10.11833/j.issn.2095-0756.2013.02.002

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

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