NDLI: Effects of drought stress on agriculture soil

Content Provider	Springer Nature Link
Author	Geng, S. M. Yan, D. H. Zhang, T. X. Weng, B. S. Zhang, Z. B. Qin, T. L.
Copyright Year	2014
Abstract	Droughts often affect the soil ecosystem directly. To address this question, a series of prototype observation experiments were designed in this study. The objective of this study was to identify changing tendencies of microbial biomass carbon content and the proportion of microbial biomass carbon in soil organic carbon under different drought conditions. All the soil samples were collected from experiments fields about 10 cm far away from the rhizosphere of the maize, and the content of microbial biomass carbon was selected as indicator for identifying effects of extreme drought on agriculture soil ecosystem. The results showed that the optimum mass water content of soil for microbial biomass carbon was 19.5 % and the demarcation point of microbial biomass carbon to drought was 14.3 %, which could be used to demonstrate alters and degradation of soil ecosystem and the irrigation requirement of crops. Meanwhile, sustainability of different drought soil ecosystems was also evaluated after rainstorm with rehabilitation. The results suggested that soil ecosystem could recover after interfered by moderate drought, and its tolerance to drought, as well as its function and activity was improved. Soil system could not adapt to severe drought stress, could barely recover and restore from extreme drought within a few days, and its function and structure were also damaged. From this view, we could conclude that mass water content of soil should be kept above 10 % to avoid soil system function and structure being destroyed. Nevertheless, these findings suggested that soil ecosystem should be watered when mass water content was lower than 14.3 %, which provided reference for improving the soil to increase the grain output.
Starting Page	1997
Ending Page	2011
Page Count	15
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	75
Issue Number	2
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-09-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Extreme drought Rainstorm Soil ecosystem Microbial biomass carbon Sustainability Productivity Natural Hazards Hydrogeology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Civil Engineering Environmental Management
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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