Combating Aeolian Desertification in Northern China

Wang, T.; Xue, Xian; Zhou, Lihua; Guo, Jingjing

doi:10.1002/ldr.2190

Cited by 181 publications

(133 citation statements)

References 46 publications

(46 reference statements)

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“…Hevia et al (2007) found that notill showed more large aggregates and fewer fine aggregates than traditional tillage. This was also indicated by Gao et al (2015) and Wang et al (2015) over soil-conserving tillage in Northern China. Gomesa et al (2003) observed that soil erodibility by wind under traditional tillage was lower than in conservation tillage, since only a limited amount of material was available to wind erosion due mainly to crusting of the soil surface.…”

Section: Introductionmentioning

confidence: 69%

Soil wind erosion in ecological olive trees in the Tabernas desert (southeastern Spain): a wind tunnel experiment

et al. 2016

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Abstract. Wind erosion is a key component of the soil degradation processes. The purpose of this study is to find out the influence of material loss from wind on soil properties for different soil types and changes in soil properties in olive groves when they are tilled. The study area is located in the north of the Tabernas Desert, in the province of Almería, southeastern Spain. It is one of the driest areas in Europe, with a semiarid thermo-Mediterranean type of climate. We used a new wind tunnel model over three different soil types (olive-cropped Calcisol, Cambisol and Luvisol) and studied micro-plot losses and deposits detected by an integrated laser scanner. We also studied the image processing possibilities for examining the particles attached to collector plates located at the end of the tunnel to determine their characteristics and whether they were applicable to the setup. Samples collected in the traps at the end of the tunnel were analyzed. We paid special attention to the influence of organic carbon, carbonate and clay contents because of their special impact on soil crusting and the wind-erodible fraction. A principal components analysis (PCA) was carried out to find any relations on generated dust properties and the intensity and behavior of those relationships. Component 1 separated data with high N and OC contents from samples high in fine silt, CO = 3 and available K content. Component 2 separated data with high coarse silt and clay contents from data with high fine sand content. Component 3 was an indicator of available P 2 O 5 content. Analysis of variance (ANOVA) was carried out to analyze the effect of soil type and sampling height on different properties of trapped dust. Calculations based on tunnel data showed overestimation of erosion in soil types and calculation of the fraction of soil erodible by wind done by other authors for Spanish soils. As the highest loss was found in Cambisols, mainly due to the effect on soil crusting and the wind-erodible fraction aggregation of CaCO 3 , a Stevia rebaudiana cover crop was planted between the rows in this soil type and this favored retention of particles in vegetation.

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Section: Introductionmentioning

confidence: 69%

Soil wind erosion in ecological olive trees in the Tabernas desert (southeastern Spain): a wind tunnel experiment

et al. 2016

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“…Spatially, most land with wind-induced soil degradation (aeolian desertified land) are distributed in arid and semi-arid northern China where the annual rainfall is below 500 mm [7]. As Figure 2 shows, aeolian degraded lands are mainly scattered in (1) the semi-arid agro-pastoral ecotone of northern China (about 40.5% of total aeolian degraded land) where wind erosion and sand sheet incursions are responsible for most soil degradation; (2) the semi-arid steppe in the middle of Inner Mongolia (about 36.5% of total aeolian degraded land) where reactivation of fixed dunes and shifting sand incursions create the most soil degradation; and (3) the margins of oases and lower reaches of inland rivers in the arid region (about 23% of total aeolian degraded land) where reactivated fixed dunes cause most soil degradation [7]. Generally, human activities are considered to be one of most important factor contributing to wind-induced soil degradation [7,12].…”

Section: Wind-induced Soil Degradation In Northern Chinamentioning

confidence: 99%

“…The total economic loss due to wind-induced soil degradation has been estimated to be more than 54 billion Chinese Yuan (approximately 6.8 billion U.S. dollar) per year. About 170 million residents in arid and semi-arid northern China are threatened by wind-induced soil degradation [6]. Severe soil degradation generally decreases land productivity, which may result in local poverty, malnutrition, and disease.…”

Section: Introductionmentioning

confidence: 99%

“…Severe soil degradation generally decreases land productivity, which may result in local poverty, malnutrition, and disease. In turn, the poverty may push residents to over-exploit local natural resources, which may further degrade local sensitive ecosystems [7]. To combat wind erosion induced soil degradation and enhance local sustainability, the government invests about 0.024% of the annual Chinese gross domestic product (GDP) to launch a series of national policies and ecological projects [8].…”

Section: Introductionmentioning

confidence: 99%

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Wind Erosion Induced Soil Degradation in Northern China: Status, Measures and Perspective

et al. 2014

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“…In recent days, a range of desertification processes has been successfully analyzed and addressed, through the application of remote sensing techniques Miao et al, 2015;Wang et al, 2015;Torres et al, 2015;Yan et al, 2015;Xu et al, 2015). The land degradation of arid and semiarid zones, often called desertification when it is irreversible in form, and the main factors of this phenomenon being either climate-or human-induced, has been much debated since the mid-1970s (Rasmussen et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Modeling the contributing factors of desertification and evaluating their relationships to the soil degradation process through geomatic techniques

Periasamy

Ramakrishnan

2016

Solid Earth

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Abstract. Desertification is a prolonged type of land degradation which converts the productive ecosystem to a fragile one by two crucial factors, namely, climate and negative human intrusion. The present study concentrates on identifying the causative factors of desertification, namely temperature, wind, rainfall scarcity and human pressure. It also concentrates on distinguishing the desertified land from degraded land and assessing the way in which the soil degradation process becomes accelerated by these factors, by employing data sets such as meteorological data and Landsat ETM+ (Enhanced Thematic Mapper) and OLI (Operational Land Imager) satellite images of the crop-growing period (JuneOctober) in geostatistical methods and newly proposed remote sensing models, which yielded good accuracy with in situ observations (R 2 = 0.8). The study was centered on two time periods, 2001-2011 (11 years) and 2012-2015 (4 years). In rainfall-temperature/drought-induced desertified region, the rate of salt-affected soils increased significantly from 12 to 58 % (2001-2015) due to the presence of native fluoride concentration and extreme temperature events. The region has also been experiencing high soil moisture stress (5 to 33 %) because of the insufficient occurrence of rainfall over a period of time. A longer term exacerbation of soil moisture stress (19 to 90 %) has been noted in the areas that were susceptible to wind-induced desertification, due to a high evaporation rate caused by extreme wind events for a substantial period. High human-induced soil salinity (36 %), human occupancy (16 %), followed by moisture stress (7 %) are observed in the human-affected region because of growing population and improper land management of the land that is already fragile.

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Combating Aeolian Desertification in Northern China

Cited by 181 publications

References 46 publications

Soil wind erosion in ecological olive trees in the Tabernas desert (southeastern Spain): a wind tunnel experiment

Soil wind erosion in ecological olive trees in the Tabernas desert (southeastern Spain): a wind tunnel experiment

Wind Erosion Induced Soil Degradation in Northern China: Status, Measures and Perspective

Modeling the contributing factors of desertification and evaluating their relationships to the soil degradation process through geomatic techniques

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