Impacts of artificially planted vegetation on the ecological restoration of movable sand dunes in the Mugetan Desert, northeastern Qinghai-Tibet Plateau

Li, Yan‐Fu; Li, Zhiwei; Wang, Zhaoyin; Wang, Wenlong; Jia, Yanhong; Tian, Senlin

doi:10.1016/j.ijsrc.2017.02.003

Cited by 28 publications

(13 citation statements)

References 27 publications

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“…Revegetation on sandy land is a crucial mission for people living in arid, semi-arid, and dry subhumid areas 20 . Previous reports show that revegetation includes not only vegetation coverage, but also recovery of community structure 21,22 and plant diversity 23,24 . The planting of shrubs, trees 25 , and grazing exclusion 26,27 has a positive impact on revegetation.…”

Section: Introductionmentioning

confidence: 99%

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Liao

Liu

et al. 2019

Sci Rep

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Revegetation on sandy land has attracted worldwide attention, especially on the extremely fragile alpine eco-region of the Tibetan Plateau. However, the effectiveness of revegetation and its controlling factors have rarely been reported. We collected plant growths and species composition from seven field sites in 2011 and conducted a follow-up random investigation in 2016. The indicators, including richness and diversity, were used to compare the differences among these sites based on redundancy and cluster analyses. The results indicated that plant growth has different characteristics in different land types. The distribution and growth of Artemisia sphaerocephala , Artemisia younghusbandii and Heteropappus gouldii varied with topography, and the crown widths of A. sphaerocephala were 100.6 cm × 87.2 cm on barchan dune and 26.0 cm × 25.4 cm on moving sandy land at valley slopes. These species are likely the pioneer plants for revegetation on sandy land. It seems that sand-protecting barriers play an important role in revegetation. The stone and plastic checkerboard barriers increase plant diversity, while straw barrier promotes the plant growth. These findings provide useful guidance to the ongoing vegetation recovery on sandy land, an important component of the Project on Construction and Protection of Ecological Security Barriers on the Tibetan Plateau.

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Section: Introductionmentioning

confidence: 99%

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Liao

Liu

et al. 2019

Sci Rep

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“…Peng et al (2012) used the Hurst exponent to analyze the trend of vegetation dynamics, and an eco-environmental vulnerability change was performed in the Sanjiangyuan region of the QTP based on Liu’s fuzzy analytic hierarchy process (Liu et al, 2017a; Liu et al, 2017b). Shen and colleagues looked at the spring vegetation phenology change in the QTP in the last decade (Shen et al, 2014), and the response of artificial vegetation to changes in the ecological environment of the QTP was studied by Li et al (2017). The EMQTP is a transitional zone reaching from the Sichuan basin to the QTP (Li et al, 2019a; Li et al, 2019b; Amelie et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Vegetation dynamic analysis based on multisource remote sensing data in the east margin of the Qinghai-Tibet Plateau, China

Wang

Peng

Xiangdong

et al. 2019

PeerJ

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This study focuses on the vegetation dynamic caused by global environmental change in the eastern margin of the Qinghai-Tibet Plateau (EMQTP). The Qinghai–Tibet Plateau (QTP) is one of the most sensitive areas responding to global environmental change, particularly global climate change, and has been recognized as a hotspot for coupled studies on changes in global terrestrial ecosystems and global climates. An important component of terrestrial ecosystems, vegetation dynamic has become a key issue in global environmental change, and numerous case studies have been conducted on vegetation dynamic trends using multi-source data and multi-scale methods across different study periods. The EMQTP is regarded as a transitional area located between the QTP and the Sichuan basin, and has special geographical and climatic conditions. Although this area is ecologically fragile and sensitive to climate change, few studies about vegetation dynamics have been carried out in this area. Thus, in this study, we used long-term series datasets of GIMMS 3g NDVI and VGT/PROBA-V NDVI to analyze the vegetation dynamics and phenological changes from 1982 to 2018. Validation was performed based on Landsat NDVI and Vegetation Index & Phenology (VIP) data. The results reveal that the year 1998 was a vital turning point in the start of growing season (SGS) in vegetation ecosystems. Before this turning point, the SGS had an average slope of 9.2 days/decade, and after, the average slope was 3.9 days/decade. The length of growing season (LGS) was slightly prolonged between 1982 to 2015. Additionally, the largest national alpine wetland grassland experienced significant vegetation degradation; in autumn, the degraded area accounted for 63.4%. Vegetation degradation had also appeared in the arid valleys of the Yalong River and the Jinsha River. Through validation analysis, we found that the main causes of vegetation degradation are the natural degradation of wetland grassland and human activities, specifically agricultural development and residential area expansion.

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“…Nebkhas can reduce sand abrasion effects on the plant community, thus playing an important role in fixing drifting sand and stabilizing the oasis ecosystem [16,125]. On the one hand, the underground root system of plants can serve as a reinforcement to consolidate the surrounding sand particles [72]. On the other hand, the organic compounds secreted by the rootstocks and the epidermal cells shed by the root crowns can refine the soil particles, promote the weathering of primary minerals and fundamentally increase the source of siltclay minerals [72,126].…”

Section: Biological Sand Fixation Measuresmentioning

confidence: 99%

Occurrence Regularity of Silt–Clay Minerals in Wind Eroded Deserts of Northwest China

Liu

Sun

et al. 2021

Sustainability

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Wind erosion desertification is the most serious type of land degradation in Northwest China, so it is an important task for ecological management in the region. As the core of ecological management, soil quality is mainly affected by the presence of silt–clay content. Therefore, the grasp of its occurrence regularity is the key to controlling wind erosion desertification. At present, research on silt–clay contents is mainly independent in each local area and lacks integrity, which makes it difficult to meet the overall evaluation and planning requirements. To this end, this paper reviewed the related studies on the occurrence and control of wind erosion desertification in recent years and collected nearly 300 relevant silt–clay content data points. We studied the occurrence regularity of silt–clay content during the occurrence and treatment of wind erosion desertification and revealed the mechanism of silt–clay content in different processes. On this basis, the degree of wind erosion desertification in the major areas of Northwest China in the last five years was evaluated by calculations based on soil typing theory, and the fractal dimension interval (2.41–2.53) for the critical discrimination of desertification in these areas was obtained. The results showed that there were obvious distribution intervals of silt–clay content for different degrees of wind erosion desertification. Qualitative changes in soil quality during degradation ranged from light to moderate wind erosion desertification. The occurrence and control of wind erosion desertification were largely affected by the processes of silt–clay particles loss and aggregation. Among the three main treatment measures, biological measures enhanced silt–clay content most significantly. In this study, the occurrence regularity of silt–clay minerals in wind erosion desertification in Northwest China was revealed as a whole. This study provided a preliminary overall judgement of the dynamic evolution of wind erosion desertification, which provided a reference for the overall evaluation and global governance planning of wind erosion desertification in Northwest China.

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Impacts of artificially planted vegetation on the ecological restoration of movable sand dunes in the Mugetan Desert, northeastern Qinghai-Tibet Plateau

Cited by 28 publications

References 27 publications

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Vegetation dynamic analysis based on multisource remote sensing data in the east margin of the Qinghai-Tibet Plateau, China

Occurrence Regularity of Silt–Clay Minerals in Wind Eroded Deserts of Northwest China

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