Quantitative effects of wind erosion on the soil texture and soil nutrients under different vegetation coverage in a semiarid steppe of northern China

Yu, Yan Zhen; Xin, Xiaoping; Xu, Xingliang; Wang, Xu; Yang, Guoxiang; Yan, Ruirui; Chen, Baorui

doi:10.1007/s11104-013-1606-3

Cited by 78 publications

(41 citation statements)

References 24 publications

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“…Previous studies have reported that soil C and N stocks in the upper soil layers were positively correlated with MAP and negatively correlated with MAT; these findings are similar to our observations along a large aridity gradient (Follett et al, 2012;He et al, 2014;Liu et al, 2012;Miller et al, 2004). The depletion of fine soil particles due to the intensified wind erosion with increasing aridity could further deplete C and nutrients in arid systems because these particles have disproportionately greater amounts of C and nutrients than larger particles (Yan et al, 2013). Furthermore, the decline of plant coverage and aboveground biomass under higher aridity would also contribute to the decreased C and N content along this aridity gradient.…”

Section: Discussionsupporting

confidence: 91%

“…Given the predicted increases in aridity in this century for the global drylands (Dai, 2013), this study indicates that the soil C and N pools in those arid ecosystems may decline in the future. Because wind erosion would lead to greater loss of relatively fine silt and clay particles (Yan et al, 2013), our results suggest that land use practices which reduce wind erosion (e.g. reducing the intensity of grazing) will play an important role in sustaining soil C sequestration in dryland regions globally.…”

Section: Discussionmentioning

confidence: 91%

“…We suspect that this pattern is partly caused by the wind erosion and dust storms, which can be exacerbated by increasing aridity and frequently occur in higher aridity areas of northern China Yan et al, 2013;Zhang and Liu, 2010). Wind erosion favors losses of fine soil particles and consequently leads to changes of the soil texture (Feng et al, 2001;Wang et al, 2006;Yan et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

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Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

et al. 2016

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Abstract. Climate factors such as aridity significantly influence soil carbon (C) and nitrogen (N) stocks in terrestrial ecosystems. Further, soil texture plays an important role in driving changes of soil C and N contents at regional scale. However, it remains uncertain whether such changes resulted from the variation of different soil particle–size factions and/or the C and N concentrations in those fractions. We examined the distribution of total C and N in both bulk soil and different soil particle–size fractions, including sand (53–2000 µm), silt (2–53 µm), and clay (< 2 µm), along a 3000 km transect in arid and semi-arid grasslands of northern China. Across the whole transect, sand content was positively and silt content was negatively correlated with increasing aridity. Carbon content in bulk soils (0–10 cm) ranged from 4.36 to 46.16 Mg C ha−1, while N content ranged from 0.22 to 4.28 Mg N ha−1 across different sampling sites on the transect. The total C and N concentrations and contents in bulk soils as well as in the three particle–size fractions tended to be negatively correlated with aridity. The concentrations and contents of total C and N in bulk soils were positively correlated with silt and clay contents and negatively correlated with sand content. Positive correlations were observed between the concentrations and contents of C or N in bulk soils and the C or N concentrations in the three soil particle–size fractions. By characterizing such a large scale aridity gradient, our results highlight that aridity would decrease soil C and N contents both by favoring increased sand content and by decreasing C and N concentrations in all the three soil fractions. These patterns thus have significant implications for understanding soil C and N sequestration under scenarios of increasing aridity in global drylands that are predicted to occur this century.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

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Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

et al. 2016

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“…In addition, reclamation might result in a higher percentage of macro-aggregate of coastal reclaimed soils, especially for old zone 1930s that was closer to the residential zone. Previous studies have presented soil quality as possibly being improved by increasing vegetation coverage to prevent soil erosion and decrease the loss of fine particles, especially in the rainy seasons after the crops are harvested [47]. For soil pH, the median value displayed a slightly declining trend from 8.47 to 7.60 with the increase of reclamation time, but the ANOVA showed a significant difference from the intertidal flats to the 1930s soils (p<0.05).…”

Section: Variance Analysis For Soil Properties In Different Zonesmentioning

confidence: 88%

Effects of Land Reclamation on Distribution of Soil Properties and Heavy Metal Concentrations, and the Associated Environmental Pollution Assessment

Yan¹,

Hu²,

Chang³

et al. 2017

Pol. J. Environ. Stud.

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We used the "space for time substitution" method to test the effects of reclamation history on evolution processes of soil properties and heavy metal concentrations. A total of 129 surface soil samples were collected in a reclamation zone of the Liaohe River Delta, which was divided into three reclaimed zones (1930s, 1960s, and 1990s), marsh, and intertidal flats. Soil metals (Fe, Mn, Cd, Cr, Cu, Ni, Pb, and Zn), soil particle size, pH, salinity, soil organic carbon (SOC), nitrate nitrogen (NO 3 --N), and available phosphorus (AP) were analyzed. Results obtained from correlation analysis and factor analysis showed that there were significant positive correlations (p<0.01) between the fine particle fractions (clay and silt) and metal concentrations. Using ANOVA, we found that soil erosion and leaching desalination had significant effects on the distributions of soil properties and heavy metal contents in short-term reclamation (1990s zone), and that sustained human activities have played an important role in long-term reclamation (1960s zone). Results of the enrichment factor (EF) and inverse distance weighting (IDW) indicated that Cd pollution had reached high pollution levels, followed by Cr pollution. Taking necessary measures is significant for sustainable utilization and management of coastal resources.

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“…The average elevation at the site is 650 m, and the site features a flat surface that does not vary by more than 20 m in elevation. The regional climate is characterized as a semiarid steppe with an annual average rainfall of 350-400 mm, which mainly occurs from July to September [32]. The land cover is meadow steppe, which is dominated by Leymus chinensis and Stipa baicalensis.…”

Section: Site Descriptionmentioning

confidence: 99%

Assessment of the MODIS LAI Product Using Ground Measurement Data and HJ-1A/1B Imagery in the Meadow Steppe of Hulunber, China

Tang

Xin

et al. 2014

Remote Sensing

Self Cite

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Abstract:The leaf area index (LAI) is a crucial parameter of vegetation structure. It provides key information for earth surface process simulations and climate change research on the global and regional scales. Focusing on the meadow steppe in Hulunber, Inner Mongolia, China, the present study assessed the accuracy of the Moderate Resolution Imaging Spectroradiometer (MODIS) LAI product in the study area. First, seven field campaigns collecting ground-based measurements were conducted during the growing season in 2013, and 252 pairs of LAIs and spectra were collected. Then, seven scenes of high-resolution LAI maps were obtained from the corresponding 30 m Chinese HJ-1A/1B charge-coupled diode (CCD) images by employing a regression approach. Finally, comparisons between the MODIS LAI product and the high resolution LAI maps were made to determine the accuracy of the MODIS LAI product. Moreover, the corresponding 500 m MODIS LAI maps were derived from the daily MODIS surface reflectance product to support the findings using the 1 km HJ LAI product and the ground-based comparison. The results showed that, compared to the ground data, the MODIS LAI product followed a reasonable seasonal trajectory during the growing season. However, an anomaly existed at the beginning of the growing season. Also, a slight overestimation was found for the MODIS LAI product compared to the HJ-retrieved LAI maps. The average overestimation for the LAI was approximately 0.4 m 2 /m 2 , and the relative absolute errors of the product ranged from 10%-50%. The overestimation at the beginning and end of the growing OPEN ACCESSRemote Sens. 2014, 6 6243 season was higher due to the interference of soil background and grass variation. The results of this study provide a comprehensive understanding of the accuracy of the regional MODIS LAI product for the Hulunber meadow steppe. This research is important for improving regional modeling and prediction of vegetation biogeochemical processes and earth system productivity.

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Quantitative effects of wind erosion on the soil texture and soil nutrients under different vegetation coverage in a semiarid steppe of northern China

Cited by 78 publications

References 24 publications

Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

Effects of Land Reclamation on Distribution of Soil Properties and Heavy Metal Concentrations, and the Associated Environmental Pollution Assessment

Assessment of the MODIS LAI Product Using Ground Measurement Data and HJ-1A/1B Imagery in the Meadow Steppe of Hulunber, China

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Quantitative effects of wind erosion on the soil texture and soil nutrients under different vegetation coverage in a semiarid steppe of northern China

Cited by 78 publications

References 24 publications

Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

Effects of Land Reclamation on Distribution of Soil Properties and Heavy Metal Concentrations, and the Associated Environmental Pollution Assessment

Assessment of the MODIS LAI Product Using Ground Measurement Data and HJ-1A/1B Imagery in the Meadow Steppe of Hulunber, China

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Product

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Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China