Redefining fine roots improves understanding of below-ground contributions to terrestrial biosphere processes
McCormack, ML; Dickie, IA; Eissenstat, DM; Fahey, TJ; Fernandez, CW; Guo, DL; Helmisaari, HS; Hobbie, EA; Iversen, CM; Jackson, RB; Leppalammi-Kujansuu, J; Norby, RJ; Phillips, RP; Pregitzer, KS; Pritchard, SG; Rewald, B; Zadworny, M
2015
发表期刊NEW PHYTOLOGIST
ISSN0028-646X
卷号207期号:3页码:505-518
摘要Fine roots acquire essential soil resources and mediate biogeochemical cycling in terrestrial ecosystems. Estimates of carbon and nutrient allocation to build and maintain these structures remain uncertain because of the challenges of consistently measuring and interpreting fine-root systems. Traditionally, fine roots have been defined as all roots 2mm in diameter, yet it is now recognized that this approach fails to capture the diversity of form and function observed among fine-root orders. Here, we demonstrate how order-based and functional classification frameworks improve our understanding of dynamic root processes in ecosystems dominated by perennial plants. In these frameworks, fine roots are either separated into individual root orders or functionally defined into a shorter-lived absorptive pool and a longer-lived transport fine-root pool. Using these frameworks, we estimate that fine-root production and turnover represent 22% of terrestrial net primary production globally - a c. 30% reduction from previous estimates assuming a single fine-root pool. Future work developing tools to rapidly differentiate functional fine-root classes, explicit incorporation of mycorrhizal fungi into fine-root studies, and wider adoption of a two-pool approach to model fine roots provide opportunities to better understand below-ground processes in the terrestrial biosphere.
文章类型Journal
关键词below ground ecosystem ecosystem modeling fine-root order mycorrhizal fungi net primary productivity (NPP) plant allocation plant traits
学科领域Plant Sciences
研究领域[WOS]Plant Sciences
关键词[WOS]LONGLEAF PINE FOREST ; SOIL ORGANIC-MATTER ; ABIES L. KARST. ; NORWAY SPRUCE ; BRANCH ORDER ; CHINESE TEMPERATE ; MYCORRHIZAL FUNGI ; CARBON ALLOCATION ; GLOBAL PATTERNS ; STAND CHARACTERISTICS
收录类别SCI
语种英语
WOS记录号WOS:000357824400006
出版者WILEY-BLACKWELL
引用统计
被引频次:174[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/44387
专题生态系统网络观测与模拟院重点实验室_生态网络实验室
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McCormack, ML,Dickie, IA,Eissenstat, DM,et al. Redefining fine roots improves understanding of below-ground contributions to terrestrial biosphere processes[J]. NEW PHYTOLOGIST,2015,207(3):505-518.
APA McCormack, ML.,Dickie, IA.,Eissenstat, DM.,Fahey, TJ.,Fernandez, CW.,...&Zadworny, M.(2015).Redefining fine roots improves understanding of below-ground contributions to terrestrial biosphere processes.NEW PHYTOLOGIST,207(3),505-518.
MLA McCormack, ML,et al."Redefining fine roots improves understanding of below-ground contributions to terrestrial biosphere processes".NEW PHYTOLOGIST 207.3(2015):505-518.
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