JEQ Grow Your Career With ASA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published online 2 September 2008
Published in J Environ Qual 37:S-36-S-42 (2008)
DOI: 10.2134/jeq2007.0315
© 2008 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Google Scholar
Right arrow Articles by Chen, W.
Right arrow Articles by Chang, A. C.
PubMed
Right arrow PubMed Citation
Right arrow Articles by Chen, W.
Right arrow Articles by Chang, A. C.
Agricola
Right arrow Articles by Chen, W.
Right arrow Articles by Chang, A. C.
Related Collections
Right arrow Sustainable Agriculture
Right arrow Soil Pollution
Right arrow Soil Biology
Right arrow Soil Fertility and Productivity

Soil Enzyme Activities of Long-Term Reclaimed Wastewater-Irrigated Soils

Weiping Chen*, Laosheng Wu, William T. Frankenberger, Jr. and Andrew C. Chang

Dep. of Environmental Sciences, Univ. of California, Riverside, CA 92521

* Corresponding author (chenweip{at}yahoo.com.cn).

Received for publication June 15, 2007. Studies have shown that physical and chemical properties of soils may be significantly changed when they are subjected to long-term reclaimed water irrigation. It remains unclear how reclaimed water application may affect nutrient cycling in soils. Soil enzymes are responsible for the biogeochemical cycling of many elements and are more sensitive indicators of the ecological changes. In this study, 17 soil enzymes, including those associated with the C, N, P, and S cycles and two oxidoreductases (catalase and dehydrogenase), were assayed in soils obtained from five long-term reclaimed wastewater irrigation sites in southern California. The soil enzyme activities varied widely among the sampling sites. Compared with their respective controls, the overall activities of enzymes involved in the cycling of the four elements in soil were enhanced by an average of 2.2- to 3.1-fold. Principal component analysis and cluster analysis indicated that the soil microbial functional diversity may be evaluated based on activities of catalase, alkaline phosphatase, acid phosphatase, dehydrogenase, and urease.

Abbreviations: CA, cluster analysis • PCA, principal components analysis






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2008 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.