Effects of long-term fertilization and mulch on soil fertility in contour hedgerow systems: A case study on steeplands from the Three Gorges Area, China

Shi, Zhihua; Chen, Liding; Cai, Chongfa; Li, Zhaoxia; Li, Guohua

doi:10.1007/s10705-008-9223-x

Cited by 27 publications

(11 citation statements)

References 21 publications

(22 reference statements)

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“…It was chosen as the study site because geographically and socio‐economically it represents the whole Three‐Gorges region well. Natural resources, land use patterns and population densities in the study watershed are typical of surrounding areas (Shi et al ., 2009). The local landscape is characterized by ranges of high hills intersected by narrow valleys, where steeply sloping fields are common.…”

Section: Methodsmentioning

confidence: 99%

“…Soil erosion is a major environmental problem in the Three‐Gorges Area of China where slope farming is commonly practiced (Ng et al ., 2008; Shi et al ., 2009). Mountain region citrus orchards are widespread in this area because of their ecological and economical benefits.…”

Section: Introductionmentioning

confidence: 99%

“…Similar fertility gradients also exist in the slow‐forming terraces built by hedgerow use. For example, soil fertility increased from the upper to the lower part of the slow‐forming terraces in the Andes region of Ecuador (Dercon et al ., 2003), and this was also demonstrated by a study on the purple soil area of China (Lin et al ., 2009; Shi et al ., 2009). In northern Ethiopia, a significant relationship between the position in the plot relative to the stone bund and levels of total nitrogen and available phosphorus was found, and the relationship is higher when it nears the lower stone bund.…”

Section: Introductionmentioning

confidence: 99%

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Effects of soil conservation on soil properties of citrus orchards in the Three‐Gorges Area, China

et al. 2010

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Mountain region citrus production systems occupy large parts of the landscape prone to soil erosion in the Three-Gorges Area of China. Several soil conservation measures, such as terracing hedgerows, are widely implemented in citrus orchards to control soil erosion. However, little is known about the effect of those measures on soil properties. The objective of this work was to analyse the changes of soil properties in citrus orchards subjected to different conservation measures. Experiments were conducted in four plots: control plot (SC, sloping orchard without conservation measures), sloping orchard with contour hedgerows (SCH), terraced orchard (TC) and terraced orchard with grass cover (TCG). Samples of soil surface from 0 to 15 cm were collected to analyse texture, bulk density (BD), aggregate stability, saturated hydraulic conductivity, soil organic matter (SOM) and soil nutrients. The spatial variability of those properties was also evaluated at slope and field scales. The results showed that the three conservation measures significantly increased saturated hydraulic conductivity, aggregate stability, SOM and available N, P, K, but decreased BD. The terracing with grass cover measures were the most effective in improving soil fertility among the three measures. The average SOM, available P, N, K in TCG were 0Á27, 0Á50, 1Á74 and 1Á72 and these rates are larger than for the in SC. Compared to SC, silt content was increased the SCH, while clay content was increased with TC and TCG. There was a downslope increase in clay content and total N but a decrease in gravels in the SC plot. However, that trend did not exist in the other plots. At the field scale, the soil aggregate stability and total nitrogen were significantly higher near the hedgerow under SCH, and the available N was significantly higher in the middle position under TC; the other soil properties had no significant trends based on the distance to hedgerow or stone bunds. Results of this study will contribute to a further understanding of the environmental influence of soil conservation measures.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of soil conservation on soil properties of citrus orchards in the Three‐Gorges Area, China

et al. 2010

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“…), can result in long-term regional carbon loss or gain (Wu et al, 2003;Luo and Weng, 2011;Li et al, 2013). High inherent SOC in the grassland can help maintain and improve soil fertility and quality, increase soil aggregation, stabilize soil structure and reduce soil erosion ratio (Conant et al, 2001;Li et al, 2006;Shi et al, 2009). Therefore, maintaining SOC and understanding the impact of land-use change on SOC have aroused the interest for scientific research on this topic.…”

Section: Introductionmentioning

confidence: 99%

Effect of rest-grazing management on soil water and carbon storage in an arid grassland (China)

Wang

Liu

et al. 2015

Journal of Hydrology

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“…Of the total area of 62 640 km 2 in the Three Gorges Area, 52.1% has gradients of between 7 and 25 and 37.5% has gradients of more than 25 . Thus, slope farming is commonly practiced in this area (Shi et al, 2009). After the construction of the Three Gorges Dam, because of the socioeconomic pressure in this area, many farmers resettled in the surrounding mountain areas where purple rocks are characterised by fast physical weathering and richness of nutrients (Wei et al, 2006;Liu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Linking soil thickness and plot‐scale hydrological processes on the sloping lands in the Three Gorges Area of China: a hydropedological approach

Cai

et al. 2011

Hydrological Processes

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Abstract:The emerging interdisciplinary field of hydropedology promotes synergistic integration of pedology and hydrology to enhance the holistic study of soil-water interactions across space and time. Our study illustrated this integration, exemplifying from plotscale hydrological processes investigations on the sloping lands with different soil thickness in the Three Gorges Area of China. Our aims were to deal with (i) the watershed scale soil thickness survey, soil profiles description and hydrological processes inferential analysis for the plots with typical soil thickness from the pedological perspective, and (ii) the identification of dominant hydrological processes of these plots based on hydrological monitoring under simulated rainfall (designed as 60 mm h À1 ) from the hydrological perspective. The main results can be summarised as follows: (i) soil thickness of the sloping lands exhibited a wide range of variability along hillslopes. Thin soils reflected weaker pedogenesis degrees and less intense human intervention as compared with thick soils. (ii) Deep percolation and subsurface flow were the dominant processes in thin soils, whereas in thick soils, surface flow, deep percolation and storage were the dominant processes. (iii) Regarding to the surface flow, the 23-cm plot was mainly in the form of saturated overland flow, whereas the other plots were Horton overland flow. As to the subsurface flow, both 23-and 31-cm plots mainly took the form of preferential flow, the 59-and 76-cm plots mainly in the form of matrix flow regardless of soil horizon and the 45-cm plot displayed mainly the matrix flow in the A horizon and mainly the preferential flow in the AC horizon. Our study suggested that, relative to its parent disciplines of both pedology and hydrology, hydropedology improved synergies between pedology and hydrology in the plot-scale hydrological processes investigations.

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Effects of long-term fertilization and mulch on soil fertility in contour hedgerow systems: A case study on steeplands from the Three Gorges Area, China

Cited by 27 publications

References 21 publications

Effects of soil conservation on soil properties of citrus orchards in the Three‐Gorges Area, China

Effects of soil conservation on soil properties of citrus orchards in the Three‐Gorges Area, China

Effect of rest-grazing management on soil water and carbon storage in an arid grassland (China)

Linking soil thickness and plot‐scale hydrological processes on the sloping lands in the Three Gorges Area of China: a hydropedological approach

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