土壤学报2011，Vol.48Issue(4)：693-700,8.
降尘、凋落物和生物接种对沙地土壤结皮形成的影响
EFFECTS OF FALLING DUST, LITTER AND BIO-INOCULATION ON DEVELOPMENT OF SOIL CRUST IN DESERT
摘要
Abstract
Soil bio-crust exists widely in semiarid and arid regions throughout the world, specially in desert area. An experiment on effects of simulated falling dust, litter and bio-inoculation on formation of soil crust in desert was carried out in 2006 in Horqin Sand Land to understand mechanism of soil crust formation in desert. Results show that ( 1) the falling dust obviously promoted development of soil crust, but no linear relationship was observed between the coverage and thickness of soil crust and amount of falling dust; (2) when little (100 g m-2) in amount, litter enhanced the effect of falling dust on development of soil crust, but reversely inhibited the effect, when it was more; (3 ) bio-inoculation significantly enhanced the effect, particularly the inoculation of lichen in arid environment, and of moss in relatively humid environment; (4) crust coverage was sensitive to input of extragenous substances, while crust thickness did not vary much with change in kind and amount of the input and (5) compared with illuminated and arid environment, shaded and wet environment was more conducive to development of soil crust and enhancement of the effects of inputs on crust formation.关键词
降尘/凋落物/接种/结皮Key words
Dust-falling/ Litter/ Inoculation/ Crust分类
农业科技引用本文复制引用
赵哈林,郭轶瑞,周瑞莲,左小安..降尘、凋落物和生物接种对沙地土壤结皮形成的影响[J].土壤学报,2011,48(4):693-700,8.基金项目
国家973项目(2009CB421303)和国家自然科学基金项目(30972422)资助 （2009CB421303）
