Back to Search
Start Over
Dwelling in the deep - strongly increased root growth and rooting depth enhance plant interactions with thawing permafrost soil
- Source :
- The New phytologist. 223(3)
- Publication Year :
- 2018
-
Abstract
- Climate-warming-induced permafrost thaw exposes large amounts of carbon and nitrogen in soil at considerable depths, below the seasonally thawing active layer. The extent to which plant roots can reach and interact with these hitherto detached, deep carbon and nitrogen stores remains unknown. We aimed to quantify how permafrost thaw affects root dynamics across soil depths and plant functional types compared with above-ground abundance, and potential consequences for plant-soil interactions. A decade of experimental permafrost thaw strongly increased total root length and growth in the active layer, and deep roots invaded the newly thawed permafrost underneath. Root litter input to soil across all depths was 10 times greater with permafrost thaw. Root growth timing was unaffected by experimental permafrost thaw but peaked later in deeper soil, reflecting the seasonally receding thaw front. Deep-rooting species could sequester
- Subjects :
- 0106 biological sciences
0301 basic medicine
Root growth
Peat
Physiology
Nitrogen
chemistry.chemical_element
Permafrost
Plant Science
01 natural sciences
Plant Roots
03 medical and health sciences
Soil
Fertilizers
biology
fungi
food and beverages
Eriophorum
biology.organism_classification
Tundra
Active layer
030104 developmental biology
chemistry
Agronomy
Environmental science
Carbon
010606 plant biology & botany
Subjects
Details
- ISSN :
- 14698137
- Volume :
- 223
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- The New phytologist
- Accession number :
- edsair.doi.dedup.....07792be1d63abf1f23925dd429873323