Soil degradation and restoration as affected by land use change in the semiarid Bashang area, northern China

Zhao, Wenlong; Xiao, Hu; Liu, Zhi Min; Jin, Li

doi:10.1016/j.catena.2004.06.004

Cited by 168 publications

(106 citation statements)

References 16 publications

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“…Frequently, terrestrial ecosystem diversity is being reduced by replacing indigenous flora with a few crops. The ecological consequences of such transitions have been addressed in several studies focusing on land degradation [1,2,3], losses of macrobiodiversity [4,5], nutrient exhaustion in soils [3], sustainability [6,7] and restoration [8]. Soil microorganisms, including protozoa, fungi, bacteria and archaea, are essential for the proper functioning and sustainability of ecosystems [9,10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, a high microbial diversity is assumed to be critical for the stability of ecosystems by providing functional diversity and redundancy [12,13]. Changes in vegetation as well as intensive agricultural practices were shown to affect soil microbial community composition and activity [14,15] and soil physicochemical properties [3]. The influence of land use and management on soil microorganisms was addressed in several recent studies [16,17].…”

Section: Introductionmentioning

confidence: 99%

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- Discussion on Sustainable Water Technologies for Peri-Urban Areas of Mexico City: Balancing Urbanization and Environmental Conservation

2014

Agricultural Resource Use and Management

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Natural scrublands in semi-arid deserts are increasingly being converted into fields. This results in losses of characteristic flora and fauna, and may also affect microbial diversity. In the present study, the long-term effect (50 years) of such a transition on soil bacterial communities was explored at two sites typical of semi-arid deserts. Comparisons were made between soil samples from alfalfa fields and the adjacent scrublands by two complementary methods based on 16S rRNA gene fragments amplified from total community DNA. Denaturing gradient gel electrophoresis (DGGE) analyses revealed significant effects of the transition on community composition of Bacteria, Actinobacteria, Alpha-and Betaproteobacteria at both sites. PhyloChip hybridization analysis uncovered that the transition negatively affected taxa such as Acidobacteria, Chloroflexi, Acidimicrobiales, Rubrobacterales, Deltaproteobacteria and Clostridia, while Alpha-, Beta-and Gammaproteobacteria, Bacteroidetes and Actinobacteria increased in abundance. Redundancy analysis suggested that the community composition of phyla responding to agricultural use (except for Spirochaetes) correlated with soil parameters that were significantly different between the agricultural and scrubland soil. The arable soils were lower in organic matter and phosphate concentration, and higher in salinity. The variation in the bacterial community composition was higher in soils from scrubland than from agriculture, as revealed by DGGE and PhyloChip analyses, suggesting reduced beta diversity due to agricultural practices. The long-term use for agriculture resulted in profound changes in the bacterial community and physicochemical characteristics of former scrublands, which may irreversibly affect the natural soil ecosystem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

- Discussion on Sustainable Water Technologies for Peri-Urban Areas of Mexico City: Balancing Urbanization and Environmental Conservation

2014

Agricultural Resource Use and Management

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“…5d and As is commonly recognized, aside from precipitation and temperature, NPP is also subject to the influence of other environmental/climate factors and human activities (Luo et al, 2008;Zhang et al, 2015b). For example, while Zhao (Akiyama and Kawamura, 2007;Zhao et al, 2005;Zheng et al, 2006). Our assessment is that numbers of grazing livestock declined between 2001 and 2013, and were not significantly related to NPP (Fig.…”

Section: Discussionmentioning

confidence: 74%

Empirical and model-based estimates of spatial and temporal variations in net primary productivity in semi-arid grasslands of Northern China

Zhang

Liu

et al. 2017

Preprint

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were mostly negatively correlated with NPP, but temperature was positively correlated with spring and autumn NPP.Spatial correlation and partial correlation analyses at the pixel scale confirmed precipitation as a major driver of NPP.Temperature was negatively correlated with NPP in 99% of the regions at the annual scale, but after removing the effect of precipitation, temperature was positively correlated with the NPP in 77% of the regions.

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“…The restoration time of a degraded ecosystem depends on how seriously and how much it has been disturbed (Zhao et al 2005;Dobson et al 1997). The research programme focused on the Tutova Hills area of the Moldavian Plateau (Eastern part of Romania), one of the most active areas in Romania in terms of geomorphologic processes.…”

Section: Resultsmentioning

confidence: 99%

“…-Performing the regular and necessary works of maintenance and exploitation of natural resources of soil and vegetation.Vegetation cover has long been recognised as a key factor in the runoff production and protection against erosion, as the vegetation increases infiltration and surface roughness and reduces the kinetic impact of raindrops (Morgan 1995). The plant cover is the most important vegetation parameter for splash and inter-rill erosion, whereas for rill and ephemeral gully erosion plant roots are at least as important as the vegetation cover (Gyssels et al 2005; Gimeno-García et Where the vegetation recovery is slow, and the erosion processes may be active, the soil restoration may be a very slow or irreversible process (Zhao et al 2005). …”

Section: Local and Global Matrix Of Ecological Impactmentioning

confidence: 99%

Ecopedological research for ecological rehabilitation of degraded lands from Eastern Romania

Bireescu¹,

Bireescu²,

Constandache³

et al. 2010

Soil & Water Res.

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Abstract:The assessment study of the global ecological impact tries to highlight the main factors and negative ecological determinants, due to a lack or excess, and it also focuses on highlighting the main negative ecological effects with the aim to rehabilitate and restore the ecological balance within degraded ecosystems. The methodology used in the assessment process was based on graphs, tables in the shape of Leopold matrix, considerably improved by authors. In order to assess qualitatively the negative ecological effects, a reliability scale with 3 indicators and 3 graduations was used, designed to underline the importance of the impact (minor, medium, and major), the quality of the impact (neutral, negative, and positive) and the certainty of the appearance of a negative impact (improbable, probable, and certain). Our research was accomplished in the pasture ecosystem degraded by pluvial erosion from the Tutova Hills, located in the Eastern part of Romania. This ecosystem is characterized through active geo-morphological processes in the depth and on the surface and it drew attention to the presence of 8 negative ecological factors grouped in 3 main categories: geo-climatic, pedological, and anthropogenic. 8 main negative effects were identified and quantified by means of 3 qualitative indicators with 3 graduation scales. The analysis of the current state of the effects of the complex ecological impact upon the degraded ecosystem ask for a series of urgent measures elaborated by scientists, researchers, and representatives of the local administration system. The aim of these measures is to improve the ecological balance and to eliminate the negative anthropogenic impact that augments and aggravates the action of the negative geo-climatic and pedological factors, in of with the protection of soil quality.

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Soil degradation and restoration as affected by land use change in the semiarid Bashang area, northern China

Cited by 168 publications

References 16 publications

- Discussion on Sustainable Water Technologies for Peri-Urban Areas of Mexico City: Balancing Urbanization and Environmental Conservation

- Discussion on Sustainable Water Technologies for Peri-Urban Areas of Mexico City: Balancing Urbanization and Environmental Conservation

Empirical and model-based estimates of spatial and temporal variations in net primary productivity in semi-arid grasslands of Northern China

Ecopedological research for ecological rehabilitation of degraded lands from Eastern Romania

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