Effect of land use on soil nutrients in the loess hilly area of the Loess Plateau, China

Gong, Jirui; Chen, L.; Fu, Bojie; Huang, Yilong; Huang, Zhilong; Peng, Hongbo

doi:10.1002/ldr.701

Cited by 99 publications

(63 citation statements)

References 41 publications

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“…The ecohydrological effects of vegetation restoration in the Loess Plateau area have been reported (Gong et al, 2006;Li and Shao, 2006;Sun et al, 2006;Chen et al, 2007aChen et al, , 2010Chen et al, 2008a, b). Many investigators have paid a great deal of attention to soil desiccation resulting from the excessive depletion of deep soil water by artificial vegetation and long-term insufficient rainwater supplies (Li, 1983;Yang, 1996;Yang et al, 1998;Li and Shao, 2001;Mu et al, 2003;Fan et al, 2004;Yang and Tian, 2004).…”

Section: Introductionmentioning

confidence: 99%

Soil moisture and evapotranspiration of different land cover types in the Loess Plateau, China

Wang

Gao

et al. 2012

Hydrol. Earth Syst. Sci.

166

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Abstract. We studied the impacts of re-vegetation on soil moisture dynamics and evapotranspiration (ET) of five land cover types in the Loess Plateau in northern China. Soil moisture and temperature variations under grass (Andropogon), subshrub (Artemisia scoparia), shrub (Spiraea pubescens), plantation forest (Robinia pseudoacacia), and crop (Zea mays) vegetation were continuously monitored during the growing season of 2011. There were more than 10 soil moisture pulses during the period of data collection. Surface soil moisture of all of the land cover types showed an increasing trend in the rainy season. Soil moisture under the corn crop was consistently higher than the other surfaces. Grass and subshrubs showed an intermediate moisture level. Grass had slightly higher readings than those of subshrub most of the time. Shrubs and plantation forests were characterized by lower soil moisture readings, with the shrub levels consistently being slightly higher than those of the forests. Despite the greater post-rainfall loss of moisture under subshrub and grass vegetation than forests and shrubs, subshrub and grass sites exhibit a higher soil moisture content due to their greater soil retention capacity in the dry period. The daily ET trends of the forests and shrub sites were similar and were more stable than those of the other types. Soils under subshrubs acquired and retained soil moisture resources more efficiently than the other cover types, with a competitive advantage in the long term, representing an adaptive vegetation type in the study watershed. The interactions between vegetation and soil moisture dynamics contribute to structure and function of the ecosystems studied.

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Section: Introductionmentioning

confidence: 99%

Soil moisture and evapotranspiration of different land cover types in the Loess Plateau, China

Wang

Gao

et al. 2012

Hydrol. Earth Syst. Sci.

166

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“…Moreover, the implementation of GFG program is also an effective way to offset the increase in atmospheric CO 2 . Several studies on the effects of land use change on soil erosion and nutrients have been focused on the Loess Plateau (Wang et al, 2001;Gong et al, 2006;Fu et al, 2009). However, there is a continuing debate on which of the two main restoration vegetation types, plantation forest or grass, is better for carbon sequestration in the restoration of this area.…”

Section: Introductionmentioning

confidence: 99%

Soil carbon stock and flux in plantation forest and grassland ecosystems in Loess Plateau, China

Li²,

Fu³

et al. 2014

Chin. Geogr. Sci.

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Abstract:Carbon sequestration occurs when cultivated soils are re-vegetated. In the hilly area of the Loess Plateau, China, black locust (Robinia pseudoacacia) plantation forest and grassland were the two main vegetation types used to mitigate soil and water loss after cultivation abandonment. The purpose of this study was to compare the soil carbon stock and flux of these two types of vegetation which restored for 25 years. The experiment was conducted in Yangjuangou catchment in Yan′an City, Shaanxi Province, China. Two adjacent slopes were chosen for this study. Six sample sites were spaced every 35-45 m from summit to toe slope along the hill slope, and each sample site contained three sampling plots. Soil organic carbon and related physicochemical properties in the surface soil layer (0-10 cm and 10-20 cm) were measured based on soil sampling and laboratory analysis, and the soil carbon dioxide (CO 2 ) emissions and environmental factors were measured in the same sample sites simultaneously. Results indicated that in general, a higher soil carbon stock was found in the black locust plantation forest than that in grassland throughout the hill slope. Meanwhile, significant differences in the soil carbon stock were observed between these two vegetation types in the upper slope at soil depth 0-10 cm and lower slope at soil depth 10-20 cm. The average daily values of the soil CO 2 emissions were 1.27 mol/(m 2 ·s) and 1.39 mol/(m 2 ·s) for forest and grassland, respectively. The soil carbon flux in forest covered areas was higher in spring and less variation was detected between different seasons, while the highest carbon flux was found in grassland in summer, which was about three times higher than that in autumn and spring. From the carbon sequestration point of view, black locust plantation forest on hill slopes might be better than grassland because of a higher soil carbon stock and lower carbon flux.

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“…These belong to the Calcic Cambisol group according to the Food and Agriculutre Organisation and United Nations Education Scientific and Cultural Organization (FAO-UNESCO) soil classification system. More information on the soil features of the land use types in the loess hilly area is given in the literature (Zhang 1991;Li et al 1992;Chang et al 1999;Wang et al 2001;Messing et al 2003;Gong et al 2006). Soil erosion in the study area is around 5.0-10.0 · 10 6 kg km À2 a À1 .…”

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confidence: 96%

Effect of land use conversion on soil organic carbon sequestration in the loess hilly area, loess plateau of China

Chen

Gong

et al. 2006

Ecological Research

213

113

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Changes in land use may alter land cover, which results in carbon stock changes in biomass as well as in the soil. In China's loess plateau, vegetation restoration has been conducted since 1950s to control soil erosion and improve the ecosystem, with significant investment of money and manpower. Despite these efforts, soil erosion has still been severe. To reduce soil erosion and improve land quality, China initiated another state-funded project, Grain-for-Green, in 1999 in the loess plateau. However, it is not clear how effective this newly initiated project will be. In this study, we evaluated the effect of land-use conversion on soil organic carbon (SOC) and the potential effect of the current project on SOC sequestration in the Anjiapo catchment area of the loess hilly area of the loess plateau in China. This evaluation is based on SOC measurements in cropland versus in other converted land use types. We found that SOC sequestration mainly occurred in the surface soil after land use conversion took place. Land use conversion from cropland to shrubland or wild grassland (i.e. undisturbed land) was better for SOC sequestration than tree plantation in the semi-arid loess hilly area. By using the land use change in the study area as a scenario, the potential contribution of land use change on SOC sequestration due to the Grain-for-Green projectwas estimated. It was found that this project in the loess plateau of China would be helpful for SOC sequestration ifsuccessfully implemented.

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Effect of land use on soil nutrients in the loess hilly area of the Loess Plateau, China

Cited by 99 publications

References 41 publications

Soil moisture and evapotranspiration of different land cover types in the Loess Plateau, China

Soil moisture and evapotranspiration of different land cover types in the Loess Plateau, China

Soil carbon stock and flux in plantation forest and grassland ecosystems in Loess Plateau, China

Effect of land use conversion on soil organic carbon sequestration in the loess hilly area, loess plateau of China

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