Role of canopy interception on water and nutrient cycling in Chinese fir plantation ecosystem |
| |
| Authors: | Wenxing Kang Xiangwen Deng Zhonghui Zhao |
| |
| Institution: | (1) The Life Science and the Technical Institute, Central South University of Forestry and Technology, Changsha, 410004, China |
| |
| Abstract: | The role of canopy interception on nutrient cycling in Chinese fir plantation ecosystem was studied on the basis of the position
data during four years. Results indicate that the average canopy interception amount was 267.0 mm/year. Canopy interception
play a significant role in water cycle and nutrient cycle processes in ecosystem, and was an important part of evaporation
from the Chinese fir plantation ecosystem, being up to 27.2%. The evaporation from the canopy interception was an important
way of water output from ecosystem, up to 19.9%. The flush-eluviation of branches and leaves caused by canopy interception
brought nutrient input of 143.629 kg/(hm2 · year), which was 117.2% of the input 63.924 kg/(hm2 · year) from the atmospheric precipitation. The decreased amount of 80.1 mm precipitation input caused by canopy interception
reduced the amount of rainfall into the stand surface and infiltration into the soil, reduced the output with runoff and drainage,
and decreased nutrient loss through output water. Therefore, the additional preserve of nutrient by canopy interception was
8.664 kg/(hm2 · year).
__________
Translated from Scientia Silvae Sinicae, 2006, 42(12): 1–5 译自: 林业科学] |
| |
| Keywords: | Chinese fir plantation canopy interception intercepted evaporation runoff nutrition accumulation |
| 本文献已被 SpringerLink 等数据库收录！ |
|
