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Scientia Silvae Sinicae ›› 2005, Vol. 41 ›› Issue (1): 198-201.doi: 10.11707/j.1001-7488.20050133

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Throughfall and Stemflow in a Primary Spruce Forest in the Subalpine of Western Sichuan

Gong Hede1,Wang Kaiyun2,Yang Wanqin3,Wang Qian3,Zhang Yuanbin3   

  1. 1.Institute of Reseurces and Environment, Shandong Academyof Forestry Jinan250014; 2.Urbanization Process and Ecological Restoration Key Laboratory, East China Normal University Shanghai200062; 3.Chengdu Institute of Biology, Chinese Academy of Science Chengdu610041
  • Received:2003-01-20 Revised:1900-01-01 Online:2005-01-25 Published:2005-01-25

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Abstract:

The characteristics of throughfall and stemflow over one growing season were studied in a dark coniferous forest in the subalpine of the Western Sichuan. The results indicated that: 1) The distribution of precipitation by canopy was more relative to the rainfall, the higher the rainfall was, the more the throughfall and stemflow were, and the less the interception was; 2) The relationships between throughfall (T) and total rainfall (P) could be described significantly by a linear function (T=0.744P-0.937, R2=0.954, p<0.001), while the reationship between crown interception (I) and total rainfall by a power function (I=0.759P 0.666, R2=0.763, p<0.001); 3) The average canopy interception accounted for 35.8% of total rainfall and the average throughfall for 64.2%, and the average stemflow for 0.01%; 4) High water_hold capacity of moss on the surface of tree trunk and low rainfall intensity were the main reasons that the stemflow of the coniferous forest in the subalpine of Western Sichuan was less than other forests.

Key words: throughfall, stemflow, canopy interception, spruce forest