학술논문

Long-Term Effects of Irrigation with Waste Water on Soil AM Fungi Diversity and Microbial Activities: The Implications for Agro-Ecosystem Resilience.
Document Type
Article
Source
PLoS ONE. Oct2012, Vol. 7 Issue 10, Special section p1-7. 7p.
Subject
*IRRIGATION research
*SEWAGE
*SOIL fungi
*CHEMIGATION
*WATER in agriculture
*SOIL microbiology
Language
ISSN
1932-6203
Abstract
The effects of irrigation with treated urban wastewater (WW) on the arbuscular mycorrhizal fungi (AMF) diversity and soil microbial activities were assayed on a long-term basis in a semiarid orange-tree orchard. After 43 years, the soil irrigated with fresh water (FW) had higher AMF diversity than soils irrigated with WW. Microbial activities were significantly higher in the soils irrigated with WW than in those irrigated with FW. Therefore, as no negative effects were observed on crop vitality and productivity, it seems that the ecosystem resilience gave rise to the selection of AMF species better able to thrive in soils with higher microbial activity and, thus, to higher soil fertility. [ABSTRACT FROM AUTHOR]