Soil loss and conservation in the black soil region of Northeast China: a retrospective study

Xu, Xiangzhou; Xu, Yan; Chen, Su‐Chin; Xu, Shengli; Zhang, H.W.

doi:10.1016/j.envsci.2010.07.004

Cited by 209 publications

(108 citation statements)

References 16 publications

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“…Natural forces coupled with foolhardy cultivation means that the soil erosion problems on the fertile black land soils are getting more and more acute. According to a study in 2009, the surface of the black land soils in North-East China is being lowered at rates of 0.3-1.0 cm yr −1 , and the organic matter content of these soils has been decreasing as well, implying a declining trend in the food production capacity (Yu and Zhang, 2004;Xu et al, 2010). The food production capacity of the North China Plain is also threatened because groundwater is mined and the water table is declining fast, causing many problems for the local environment (Shi et al, 2011.).…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Using models and spatial analysis to analyze spatio-temporal variations of food provision and food potential across China's agro-ecosystems

Wang

Liu

Yue

et al. 2015

Ecological Modelling

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a b s t r a c tIn order to better regionalize and discuss the rationality/irrationality of the spatial patterns China' food provision, food production and population data was collected and GIS spatial analysis and modeling methods were used. Multi-level spatial analysis and contrast between North and South China was carried out from three aspects: (1) Ecosystem food provision potential (EFPP).Step-by-step-modifying models were constructed to assess EFPP, parameters including solar radiation, temperature, humidity, topography, soil, and landuse. (2) Conversion ratio of the EFPP (CRFP), representing the ratio of actual food production to the EFPP. High EFPP and low CRFP means high remaining food potential for future exploration (or protecting, increasing). (3) Population pressure of food provision (PPFP). PPFP was calculated based on food production, population, nutrition ingredient, and consumption standards. High PPFP means food deficiency. Results: (1) The EFPP in South and Southeast China is much higher than in the North regions, while the CRFP is the opposite; this means the South and Southeast China has more remaining food potential to explore (or to protect). CRFP in Northeast China is the highest (81%), indicating the food provision in Northeast China is approaching its maximum potential. In the future it is not wise to rely solely on food provision increases in North China, which may aggravate some problems like water shortage and ecosystem deterioration. (2) PPFP in the South and Southeast of China is much greater than in the North and has been rising, indicating that South and Southeast China have deficiency in food supply and is more and more dependent on food transportation from North China. It is necessary to preserve the fertile and high-yielding croplands as well as reclaim new food resources in the southern and eastern to improve its food self-sufficiency. From the above results, we can derive that the "North Grain to South" (NGS) pattern of China is irrational. This is in opposition to the present pattern of NGS but consistent with some other studies of domain experts, who also claim the NGS pattern may need adjustment.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Using models and spatial analysis to analyze spatio-temporal variations of food provision and food potential across China's agro-ecosystems

Wang

Liu

Yue

et al. 2015

Ecological Modelling

View full text Add to dashboard Cite

show abstract

“…The black soil region in Northeast China has been cultivated as farmland, and is considered essential for Chinese crop production (Xu et al, 2010). Nevertheless, severe soil erosion has occurred since large-scale land reclamation in the 1950s, and the thickness of the A-horizon of the black soils has decreased from 60-70 cm in the 1950s to 20-30 cm at present (Fan et al, 2005;Zhang et al, 2007).…”

Section: Introductionmentioning

confidence: 97%

Using 137Cs technique to quantify soil erosion and deposition rates in an agricultural catchment in the black soil region, Northeast China

Fang

Sun

et al. 2012

Geomorphology

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“…The major soil type in the region is Bblack soil^(Mollisol); a full description of the soil groups characteristics, and its significance to crop production in northeast China, is given in Xu et al (2010). Over the past 50 years, extensive agricultural intensification has been implemented in this region by high inputs of chemical fertilizers which, in turn, are resulting in serious degradation of soil quality and environmental health (Zhao et al 2006).…”

Section: Introductionmentioning

confidence: 98%

Denitrification potential under different fertilization regimes is closely coupled with changes in the denitrifying community in a black soil

Yin

Fan

Song

et al. 2015

Appl Microbiol Biotechnol

138

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Preferable inorganic fertilization over the last decades has led to fertility degradation of black soil in Northeast China. However, how fertilization regimes impact denitrification and its related bacterial community in this soil type is still unclear. Here, taking advantage of a suit of molecular ecological tools in combination of assaying the potential denitrification (DP), we explored the variation of activity, community structure, and abundance of nirS and nirK denitrifiers under four different fertilization regimes, namely no fertilization control (N0M0), organic pig manure (N0M1), inorganic fertilization (N1M0), and combination of inorganic fertilizer and pig manure (N1M1). The results indicated that organic fertilization increased DP, but inorganic fertilization had no impacts. The increase of DP was mirrored by the shift of nirS denitrifiers' community structure but not by that of nirK denitrifiers'. Furthermore, the change of DP coincided with the variation of abundances of both denitrifiers. Shifts of community structure and abundance of nirS and nirK denitrifiers were correlated with the change of soil pH, total nitrogen (TN), organic matter (OM), C:P, total phosphorus (TP), and available phosphorus (Olsen P). Our results suggest that the change of DP under these four fertilization regimes was closely related to the shift of denitrifying bacteria communities resulting from the variation of properties in the black soil tested.

show abstract

Soil loss and conservation in the black soil region of Northeast China: a retrospective study

Cited by 209 publications

References 16 publications

Using models and spatial analysis to analyze spatio-temporal variations of food provision and food potential across China's agro-ecosystems

Using models and spatial analysis to analyze spatio-temporal variations of food provision and food potential across China's agro-ecosystems

Using 137Cs technique to quantify soil erosion and deposition rates in an agricultural catchment in the black soil region, Northeast China

Denitrification potential under different fertilization regimes is closely coupled with changes in the denitrifying community in a black soil

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