Responses of soil respiration to land use conversions in degraded ecosystem of the semi-arid Loess Plateau

Zhang, Yanjun; Guo, Shengli; Liu, Qingfang; Jiang, Jingshan; Wang, Rui; Li, Nana

doi:10.1016/j.ecoleng.2014.10.003

Cited by 94 publications

(69 citation statements)

References 49 publications

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“…It is probably caused by suitable physical and chemical properties of soil promoting microbiological activity. This is consistent with findings made by Zhang et al (2015). The authors study the effects of erosion on soil organic matter discovering that respiration activity decreases due to erosion, particularly due to the low content of soil organic matter.…”

Section: Resultssupporting

confidence: 78%

Effect of Water Erosion on Soil Respiration Characteristics of Chernozem Topsoil

Kynický¹,

Juřička²,

Brtnický³

2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Section: Resultssupporting

confidence: 78%

Effect of Water Erosion on Soil Respiration Characteristics of Chernozem Topsoil

Kynický¹,

Juřička²,

Brtnický³

2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…The cumulative soil respiration under tree crown ranged from 0.45 to 0.55 kg C m -2 year -1 in 2011 with a mean of 0.46; 0.44-0.58 kg C m -2 year -1 in 2012 with a mean of 0.45; and 0.56-0.77 kg C m -2 year -1 in 2013 with a mean of 0.57 kg C m -2 year -1 , respectively. The cumulative soil respiration in the apple orchard was lower than that in the black locust woodland (0.78 kg C m -2 year -1 ) in this region (Zhang et al 2015). This could be attributed to vegetation species and distribution which could directly affect soil microclimate (Raich and Tufekcioglu 2000), soil physicochemical and microbiological properties, and aboveground litter and root biomass.…”

Section: Soil Respiration In Apple Orchardmentioning

confidence: 95%

“…The annual mean air temperature is 9.4°C, and C10°C accumulated temperature is 3029°C. The annual sunshine hours are 2230 hours, annual total radiation is 484 kJ cm -2 , and frostfree period is 171 days (Zhang et al 2015).…”

Section: Site Descriptionmentioning

confidence: 99%

“…Soils collected at the study site in 2011 at a depth of 0-20 cm were characterized by: pH 8.3, clay content (\0.002 mm) 24 %, field capacity 22.4 %, and permanent wilting point 9.0 % (Zhang et al 2015).…”

Section: Site Descriptionmentioning

confidence: 99%

“…Six soil cores (9 cm in diameter by 20 cm in depth) were collected from each plot at 0-20 cm depths. Cores collected at 0.5 m were combined to from a composite sample, as were those at 2 m. Roots were washed and oven-dried to constant weights at 60°C for 48 h (Zhang et al 2015).…”

Section: Root Biomassmentioning

confidence: 99%

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Tree-scale spatial variation of soil respiration and its influence factors in apple orchard in Loess Plateau

Wang

Guo

Jiang

et al. 2015

Nutr Cycl Agroecosyst

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Although small-scale spatial variation of soil respiration has been studied in a wide variety of ecosystems, there are few studies investigating the spatial variation of soil respiration at tree-scale. An inaccurate estimation of soil respiration would be obtained if the spatial variation of soil respiration was ignored. Soil respiration, soil temperature, soil moisture and fine roots biomass were measured in different directions (0, 120, and 240°) at different distances (0.5 and 2 m radial distance) from the trunk of three representative trees for the period 2011-2013 in a mature apple orchard established on the Loess Plateau in 2000. The mean soil respiration rate at 0.5 m-distance was 21, 35 and 42 % higher, respectively. The cumulative soil respiration at 0.5 m-distance was 20, 31, and 38 % higher; and the temperature sensitivity of soil respiration (Q 10 ) at 0.5 m-distance was 15, 30 and 12 % higher than that at 2 m-distance in 2011, 2012, and 2013, respectively. There was no significant difference in soil temperature and moisture between 0.5 m-and 2 m-distance, whereas fine root biomass at 0.5 m-distance was 64, 108, and 114 % higher than that at 2 m-distance in 2011-2013, respectively. Fine root biomass had a positive linear relationship with accumulative soil respiration and Q 10 . Mean annual cumulative soil respiration was 0.46, 0.45, and 0.57 kg C m -2 year -1 in 2011-2013, respectively. Fine root biomass contributed to the spatial variation of soil respiration in apple orchard, and soil respiration at 2 m-distance could represent the C respired in orchard level.

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Responses of soil respiration to soil management changes in an agropastoral ecotone in Inner Mongolia, China

Xue

Tang

2017

Ecology and Evolution

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Studying the responses of soil respiration (R s) to soil management changes is critical for enhancing our understanding of the global carbon cycle and has practical implications for grassland management. Therefore, the objectives of this study were (1) quantify daily and seasonal patterns of R s, (2) evaluate the influence of abiotic factors on R s, and (3) detect the effects of soil management changes on R s. We hypothesized that (1) most of daily and seasonal variation in R s could be explained by soil temperature (T s) and soil water content (S w), (2) soil management changes could significantly affect R s, and (3) soil management changes affected R s via the significant change in abiotic and biotic factors. In situ R s values were monitored in an agropastoral ecotone in Inner Mongolia, China, during the growing seasons in 2009 (August to October) and 2010 (May to October). The soil management changes sequences included free grazing grassland (FG), cropland (CL), grazing enclosure grassland (GE), and abandoned cultivated grassland (AC). During the growing season in 2010, cumulative R s for FG, CL, GE, and AC averaged 265.97, 344.74, 236.70, and 226.42 gC m−2 year−1, respectively. The T s and S w significantly influenced R s and explained 66%–86% of the variability in daily R s. Monthly mean temperature and precipitation explained 78%–96% of the variability in monthly R s. The results clearly showed that R s was increased by 29% with the conversion of FG to CL and decreased by 35% and 11% with the conversion of CL to AC and FG to GE. The factors impacting the change in R s under different soil management changes sequences varied. Our results confirm the tested hypotheses. The increase in Q 10 and litter biomass induced by conversion of FG to GE could lead to increased R s if the climate warming. We suggest that after proper natural restoration period, grasslands should be utilized properly to decrease R s.

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Responses of soil respiration to land use conversions in degraded ecosystem of the semi-arid Loess Plateau

Cited by 94 publications

References 49 publications

Effect of Water Erosion on Soil Respiration Characteristics of Chernozem Topsoil

Effect of Water Erosion on Soil Respiration Characteristics of Chernozem Topsoil

Tree-scale spatial variation of soil respiration and its influence factors in apple orchard in Loess Plateau

Responses of soil respiration to soil management changes in an agropastoral ecotone in Inner Mongolia, China

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