Drought stress;
Global climate change;
Heterotrophic respiration;
Mycorrhizal respiration;
Root respiration;
OXYGEN-ISOTOPE COMPOSITION;
ELEVATED ATMOSPHERIC CO2;
GLOBAL CLIMATE-CHANGE;
HOOP PINE FAMILIES;
TEMPERATURE SENSITIVITY;
MICROBIAL COMMUNITIES;
ENZYME-ACTIVITIES;
WATER-STRESS;
TERRESTRIAL ECOSYSTEMS;
GRASSLAND ECOSYSTEMS;
D O I:
10.1007/s11368-013-0799-7
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
Purpose Climate change is likely to increase both intensity and frequency of drought stress. The responses of soil respiration (R-s) and its components (root respiration, R-r; mycorrhizal respiration, R-m; and heterotrophic respiration, R-h) to drought stress can be different. This work aims to review the recent and current literature about the variations in R-s during the period of drought stress, to explore potential coupling processes and mechanisms between R-s and driving factors in the context of global climate change. Results and discussion The sensitivity of soil respiration and its components to drought stress depended on the ecosystems and seasonality. Drought stress depressed R-s in mesic and xeric ecosystems, while it stimulated R-s in hydric ecosystems. The reductions in supply and availability of substrate decreased both auto- and heterotrophic respirations, leading to the temporal decoupling of root and mycorrhizal respiration from canopy photosynthesis as well as C allocation. Drought stress also reduced the diffusion of soluble C substrate, and activities of extracellular enzymes, consequently, limited microbial activity and reduced soil organic matter decomposition. Drought stress altered Q(10) values and broke the coupling between temperature and soil respiration. Under drought stress conditions, R-m is generally less sensitive to temperature than R-r and R-h. Elevated CO2 concentration alleviated the negative effect of drought stress on soil respiration, principally due to the promotion of plant C assimilation subsequently, which increased substrate supply for respiration in both roots and soil microorganisms. Additionally, rewetting stimulated soil respiration dramatically in most cases, except for soil that experienced extreme drought stress periods. The legacy of drought stress can also regulate the response of soil respiration rate to rewetting events in terrestrial ecosystems through changing abiotic drivers and microbial community structure. Conclusions and perspectives There is increasing evidence that drought stress can result in the decoupling of the above-and belowground processes, which are associated with soil respiration. However, studies on the variation in rates of soil respiration and its components under different intensities and frequencies of drought stress over the ecosystems should be reinforced. Meanwhile, molecular phylogenetics and functional genomics should be applied to link microbial ecology to the process of R-s. In addition, we should quantify the relationship between soil respiration and global change parameters (such as warming and elevated [CO2]) under drought stress. Models simulating the rates of soil respiration and its components under global climate change and drought stress should also be developed.
机构:
Chinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA
Duke Univ, Dept Biol, Durham, NC 27708 USAChinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
Shen, Weijun
;
Reynolds, James F.
论文数: 0引用数: 0
h-index: 0
机构:
Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA
Duke Univ, Dept Biol, Durham, NC 27708 USAChinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
Reynolds, James F.
;
Hui, Dafeng
论文数: 0引用数: 0
h-index: 0
机构:
Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USAChinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
机构:
Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
St Clair, Samuel B.
;
Sudderth, Erika A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
Sudderth, Erika A.
;
Castanha, Cristina
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
Castanha, Cristina
;
Torn, Margaret S.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
Torn, Margaret S.
;
Ackerly, David D.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
机构:
Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USAPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Suseela, Vidya
;
Conant, Richard T.
论文数: 0引用数: 0
h-index: 0
机构:
Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA
Queensland Univ Technol, Inst Sustainable Resources, Brisbane, Qld 4001, AustraliaPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Conant, Richard T.
;
Wallenstein, Matthew D.
论文数: 0引用数: 0
h-index: 0
机构:
Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USAPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Wallenstein, Matthew D.
;
Dukes, Jeffrey S.
论文数: 0引用数: 0
h-index: 0
机构:
Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Purdue Univ, Dept Biol Sci, W Lafayette, IN 47907 USA
Univ Massachusetts, Dept Biol, Boston, MA 02125 USAPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
机构:
Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, IsraelHebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel
Talmon, Yiftach
;
Sternberg, Marcelo
论文数: 0引用数: 0
h-index: 0
机构:
Tel Aviv Univ, Fac Life Sci, Dept Mol Biol & Ecol Plants, IL-69978 Tel Aviv, IsraelHebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel
Sternberg, Marcelo
;
Gruenzweig, Jose M.
论文数: 0引用数: 0
h-index: 0
机构:
Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, IsraelHebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel
机构:
Chinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA
Duke Univ, Dept Biol, Durham, NC 27708 USAChinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
Shen, Weijun
;
Reynolds, James F.
论文数: 0引用数: 0
h-index: 0
机构:
Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA
Duke Univ, Dept Biol, Durham, NC 27708 USAChinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
Reynolds, James F.
;
Hui, Dafeng
论文数: 0引用数: 0
h-index: 0
机构:
Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USAChinese Acad Sci, S China Bot Garden, Ecol Res Ctr, Guangzhou 510650, Guangdong, Peoples R China
机构:
Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
St Clair, Samuel B.
;
Sudderth, Erika A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
Sudderth, Erika A.
;
Castanha, Cristina
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
Castanha, Cristina
;
Torn, Margaret S.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
Torn, Margaret S.
;
Ackerly, David D.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USABrigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
机构:
Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USAPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Suseela, Vidya
;
Conant, Richard T.
论文数: 0引用数: 0
h-index: 0
机构:
Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA
Queensland Univ Technol, Inst Sustainable Resources, Brisbane, Qld 4001, AustraliaPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Conant, Richard T.
;
Wallenstein, Matthew D.
论文数: 0引用数: 0
h-index: 0
机构:
Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USAPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Wallenstein, Matthew D.
;
Dukes, Jeffrey S.
论文数: 0引用数: 0
h-index: 0
机构:
Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
Purdue Univ, Dept Biol Sci, W Lafayette, IN 47907 USA
Univ Massachusetts, Dept Biol, Boston, MA 02125 USAPurdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
机构:
Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, IsraelHebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel
Talmon, Yiftach
;
Sternberg, Marcelo
论文数: 0引用数: 0
h-index: 0
机构:
Tel Aviv Univ, Fac Life Sci, Dept Mol Biol & Ecol Plants, IL-69978 Tel Aviv, IsraelHebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel
Sternberg, Marcelo
;
Gruenzweig, Jose M.
论文数: 0引用数: 0
h-index: 0
机构:
Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, IsraelHebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel