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Impacts of land use conversion on the response of soil respiration to precipitation in drylands: A case study with four-yearlong observations
Sun, Wenhao1; Zhao, Xining2,3; Gao, Xiaodong2,3; Shi, Weiyu4; Ling, Qiang1; Siddique, Kadambot H. M.5
2021-07-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume304Pages:11
Corresponding AuthorZhao, Xining(zxn@nwafu.edu.cn)
AbstractSoil respiration (Rs) in drylands is strongly influenced by precipitation. However, there is a lack of long-term studies on how land-use conversion impact the Rs's responds to precipitation variations. In situ Rs, soil moisture and soil temperature were monitored in cropland, and cropland converted jujube orchard, grassland and shrubland in the semiarid Loess Plateau, China for four years with significant interannual precipitation variation. Q(10)-soil moisture relationships were quantified by selecting observations within limited range of soil moisture. As soil moisture increased, Rs was found to be markedly suppressed in cropland and jujube orchard with great disturbance, with volumetric water content exceeding 0.15 and 0.16, respectively, but increased in grassland and shrubland with few disturbances. Q(10) became saturated as soil moisture increased in cropland, and was linearly correlated with soil moisture in jujube orchard, grassland and shrubland. Q(10) was least sensitive to soil moisture variation in shrubland, which was characterized by a nitrogen-fixing shrub. The interannual variation in mean growing season Rs (MGR) was positively correlated with mean soil moisture. The difference in MGR between land-use types was significant except during the extreme drought year: converting cropland to jujube orchard saw a reduction in MGR by 5-18%, while converting cropland to grassland and shrubland saw an increase in MGR by 16-53% and 67-126%, respectively. This corresponded with a greater sensitivity of MGR to soil moisture in grassland and shrubland. These results suggest a greater response of soil carbon emission in the landuse applied with afforestation or restoration to the enhanced soil moisture as precipitation intensify, compared to agricultural land-use.
KeywordCO2 Temperature sensitivity Q(10) Precipitation regime Land use conversion Afforestation
DOI10.1016/j.agrformet.2021.108426
WOS KeywordTEMPERATURE SENSITIVITY ; LOESS PLATEAU ; CARAGANA-KORSHINSKII ; MICROBIAL BIOMASS ; CO2 FLUX ; LITTER DECOMPOSITION ; CARBON DECOMPOSITION ; NATURAL DROUGHT ; WATER-CONTENT ; PULSES
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program[2016YFC0400204] ; National Natural Science Foundation of China[41771316] ; CAS Youth Scholar of West China Program[XAB 2018A04] ; Natural Science Funds for Distinguished Young Scholar of Shaanxi Province[2021JC-19] ; Shaanxi Innovative Research Team for Key Science and Technology[2017KCT-15] ; '111' Project[B12007]
Funding OrganizationNational Key Research and Development Program ; National Natural Science Foundation of China ; CAS Youth Scholar of West China Program ; Natural Science Funds for Distinguished Young Scholar of Shaanxi Province ; Shaanxi Innovative Research Team for Key Science and Technology ; '111' Project
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000652014300011
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163912
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Xining
Affiliation1.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
4.Southwest Univ, Sch Geog Sci, Chongqing, Peoples R China
5.Univ Western Australia, UWA Inst Agr, LB 5005, Perth, WA 6001, Australia
Recommended Citation
GB/T 7714
Sun, Wenhao,Zhao, Xining,Gao, Xiaodong,et al. Impacts of land use conversion on the response of soil respiration to precipitation in drylands: A case study with four-yearlong observations[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,304:11.
APA Sun, Wenhao,Zhao, Xining,Gao, Xiaodong,Shi, Weiyu,Ling, Qiang,&Siddique, Kadambot H. M..(2021).Impacts of land use conversion on the response of soil respiration to precipitation in drylands: A case study with four-yearlong observations.AGRICULTURAL AND FOREST METEOROLOGY,304,11.
MLA Sun, Wenhao,et al."Impacts of land use conversion on the response of soil respiration to precipitation in drylands: A case study with four-yearlong observations".AGRICULTURAL AND FOREST METEOROLOGY 304(2021):11.
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