[1]DU Yan,ZHUANG Jiayao,ZHOU Yong.Hydrological Characteristics of the Canopy of Phyllostachy edulis Forest in Hilly Areas of Southern Jiangsu Province[J].Research of Soil and Water Conservation,2020,27(03):308-314.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
308-314
Column:
目次
Public date:
2020-04-20
- Title:
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Hydrological Characteristics of the Canopy of Phyllostachy edulis Forest in Hilly Areas of Southern Jiangsu Province
- Author(s):
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DU Yan1, ZHUANG Jiayao, ZHOU Yong
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(Soil and Water Conservation and Ecological Restoration Laboratory, Nanjing Forestry University, Nanjing, Jiangsu 210037, China)
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- Keywords:
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Phyllostachy edulis; penetrating rain; trunk runoff; canopy interception; leaf area index
- CLC:
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S715.2
- DOI:
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- Abstract:
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To investigate the canopy hydrological characteristics of the bamboo forest in the hilly area of southern Jiangsu, and to reveal the dynamics of canopy hydrology, the hydrological effects of the Phyllostachy edulis forest in the hilly area of southern Jiangsu were monitored for two consecutive years from January 2013 to December 2014. The trunk flow was collected by the self-made device, throughfall was collected by the sump, and the rain outside of the forest was collected by cylinder. The changes of trunk runoff, throughfall and canopy interception with rainfall characteristics were studied under different rainfall levels and rainfall intensity levels, and regression models were established, the main influence factors on canopy interception were quantitatively analyzed through rainfall, relative humidity, rainfall intensity, wind direction, air temperature, relative humidity, leaf area index. The cumulative rainfall outside of the bamboo forest in the hilly area of southern Jiangsu was 2 419.1 mm during the study period. The cumulative rainfall, trunk runoff and canopy interception in the forest accounted for 58.70%, 6.14%, and 35.16% of the rainfall during the same period, respectively. The amount of rainfall has the significantly linear relationship with the amount of throughfall and trunk runoff, and has the linear correlation with the canopy interception. The average monthly leaf area index of the bamboo in growing season was increasing, and the monthly total amount of canopy interception increased over the time. The average canopy interception rate showed the decreasing trend as a whole. The water holding capacity of the canopy part and trunk of the bamboo forest in the study area was 0.38 mm and 0.1 mm, respectively, and the minimum rainfall causing the trunk runoff among the rainfall events was 1.30 mm. It can been seen that the main meteorological factors affecting the canopy interception of the bamboo forest are rainfall and rainfall intensity through correlation analysis. This study can provide the scientific data support for the study of rainfall redistribution characteristics of bamboo forest in the hilly area of southern Jiangsu Province, and provide the theoretical basis for the intensive development of bamboo forest.