摘要
This study determined the effects of earthquake induced landslide on fine root mortality. It is useful to understand underground soil process after earthquake. We established 9 plots at each of non-moved and landslide site in Cupressus funebris and Cryptomeria fortunei forest stands near the fault belt of the Wenchuan Earthquake. Fine roots were sampled at 0 - 10 and 10 - 15 cm soil layer using aluminum cylinders (100 cm<sup>3</sup>). We found that earthquake induced landslide significantly increased fine root mortality in Cupressus funebris and Cryptomeria fortunei forest stands. Fine root biomass also decreased by landslide at 0 - 10 cm soil layer. We observed that the fine root biomass and mortality were various with forest type. There were higher fine root mortality rate (68.4%) and lower fine root biomass (0.48 t/hm<sup>2</sup>) in Cupressus funebris than the Cryptomeria fortunei soils (0.97 t/hm<sup>2</sup> and 37.4%).
This study determined the effects of earthquake induced landslide on fine root mortality. It is useful to understand underground soil process after earthquake. We established 9 plots at each of non-moved and landslide site in Cupressus funebris and Cryptomeria fortunei forest stands near the fault belt of the Wenchuan Earthquake. Fine roots were sampled at 0 - 10 and 10 - 15 cm soil layer using aluminum cylinders (100 cm<sup>3</sup>). We found that earthquake induced landslide significantly increased fine root mortality in Cupressus funebris and Cryptomeria fortunei forest stands. Fine root biomass also decreased by landslide at 0 - 10 cm soil layer. We observed that the fine root biomass and mortality were various with forest type. There were higher fine root mortality rate (68.4%) and lower fine root biomass (0.48 t/hm<sup>2</sup>) in Cupressus funebris than the Cryptomeria fortunei soils (0.97 t/hm<sup>2</sup> and 37.4%).
作者
Yinping Bai
Gang Yang
Yinping Bai;Gang Yang(School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China;College of Agronomy, Northwest A&F University, Yangling, China)
