Detecting Sustainability of Desertification Reversion: Vegetation Trend Analysis in Part of the Agro-Pastoral Transitional Zone in Inner Mongolia, China

Lian, Jing; Zhao, Xueyong; Li, Xin; Zhang, Tonghui; Wang, Shaokun; Luo, Yongqing; Zhu, Yang-Chun; Feng, Jing

doi:10.3390/su9020211

Cited by 22 publications

(14 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The area exhibited widespread overall increasing trends in both the EVI and LAI. This widespread greening has also been reported in previous studies, e.g., [ 15 , 29 , 37 , 50 , 51 ]. Changes in the EVI and LAI were mainly influenced by factors other than climate for more than half of the grasslands and rainfed croplands.…”

Section: Discussionsupporting

confidence: 88%

See 1 more Smart Citation

Nonlinear Changes in Dryland Vegetation Greenness over East Inner Mongolia, China, in Recent Years from Satellite Time Series

Ding

Huang

et al. 2020

Sensors

View full text Add to dashboard Cite

Knowledge of the dynamics of dryland vegetation in recent years is essential for combating desertification. Here, we aimed to characterize nonlinear changes in dryland vegetation greenness over East Inner Mongolia, an ecotone of forest–grassland–cropland in northern China, with time series of Moderate-resolution Imaging Spectroradiometer (MODIS) enhanced vegetation index (EVI) and GEOV2 leaf area index (LAI) values during 2000 to 2016. Changes in the growing season EVI and LAI were detected with the polynomial change fitting method. This method characterizes nonlinear changes in time series by polynomial fitting with the highest polynomial order of three, and simultaneously provides an estimation of monotonic trends over the time series by linear fitting. The relative contribution of climatic factors (precipitation and temperature) to changes in the EVI and LAI were analyzed using linear regression. In general, we observed similar patterns of change in the EVI and LAI. Nonlinear changes in the EVI were detected for about 21% of the region, and for the LAI, the percentage of nonlinear changes was about 16%. The major types of nonlinear changes include decrease–increase, decrease–increase–decrease, and increase–decrease–increase changes. For the overall monotonic trends, very small percentages of decrease (less than 1%) and widespread increases in the EVI and LAI were detected. Furthermore, large areas where the effects of climate variation on vegetation changes were not significant were observed for all major types of change in the grasslands and rainfed croplands. Changes with an increase–decrease–increase process had large percentages of non-significant effects of climate. The further analysis of increase–decrease–increase changes in different regions suggest that the increasing phases were likely to be mainly driven by human activities, and droughts induced the decreasing phase. In particular, some increase–decrease changes were observed around the large patch of bare areas. This may be an early signal of degradation, to which more attention needs to be paid to combat desertification.

show abstract

Section: Discussionsupporting

confidence: 88%

“…The greening process may be more evident after 2000 because most of these projects were implemented after that year [ 13 , 14 ]. Irrigation and fertilization may be other primary drivers of vegetation greening in agricultural areas [ 9 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Changes in Dryland Vegetation Greenness over East Inner Mongolia, China, in Recent Years from Satellite Time Series

Ding

Huang

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“… Reprinted from [ 27 ] under a CC BY license, with permission from [Jie LIAN], original copyright [2017]. (a) Naiman Banner is located in the southern part of the Horqin Sandy Land (HSL).…”

Section: Methodsmentioning

confidence: 99%

Spatial pattern of soil organic carbon and total nitrogen, and analysis of related factors in an agro-pastoral zone in Northern China

Wang

Chen

et al. 2018

PLoS ONE

Self Cite

View full text Add to dashboard Cite

The spatial pattern of soil organic carbon (SOC) and total nitrogen (TN) densities plays a profound important role in estimating carbon and nitrogen budgets. Naiman Banner located in northern China was chosen as research site, a total of 332 soil samples were taken in a depth of 100 cm from the low hilly land in the southern part, sandy land in the middle part and an alluvial plain in the northern part of the county. The results showed that SOC and TN density initially decreased and then increased from the north to the south, The highest densities, were generally in the south, with the lowest generally in the middle part. The SOC and TN densities in cropland were significantly greater than those in woodland and grassland in the alluvial plains and for Naiman as a whole. The woodland SOC and TN density were higher than those of grassland in the low hilly land, and higher densities of SOC and TN in grassland than woodland in the sandy land and low hilly land. There were significant differences in SOC and TN densities among the five soil types of Cambisols, Arenosols, Gleysols, Argosols, and Kastanozems. In addition, SOC and TN contents generally decreased with increasing soil depth, but increased below a depth of 40 cm in the Cambisols and became roughly constant at this depth in the Kastanozems. There is considerable potential to sequester carbon and nitrogen in the soil via the conversion of degraded sandy land into woodland and grassland in alluvial plain, and more grassland should be established in sandy land and low hilly land.

show abstract

“…Since about 2000, the Chinese government has adopted many environmental protection projects such as grazing control to restore the grassland ecosystems in the Inner Mongolia Autonomous Region. Thereafter, many degraded grasslands have begun to recover and became denser and more complex communities ( Zuo et al., 2009a ; Li et al., 2012 ; Zuo et al., 2012 ), and both the vegetation cover and the net primary production have increased rapidly ( Zhao et al., 2003 ; Lian et al., 2017 ). Previous studies have clarified the dynamics of vegetation composition and structure during the restoration process ( Zhao et al., 2003 ; Zhao et al., 2007 ; Zuo et al., 2009a ; Zuo et al., 2009b ; Zuo et al., 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Artemisia halodendron Litters Have Strong Negative Allelopathic Effects on Earlier Successional Plants in a Semi-Arid Sandy Dune Region in China

Luo

Yan

et al. 2020

Front. Plant Sci.

Self Cite

View full text Add to dashboard Cite

Artemisia halodendron Turcz. ex Besser occurs following the appearance of a pioneer species, Agriophyllum squarrosum (L.) Moq., with the former replacing the latter during the naturally vegetation succession in sandy dune regions in China. A previous study revealed that the foliage litter of A. halodendron had strong negative allelopathic effects on germination of the soil seed bank and on the seedling growth. However, whether this allelopathic effect varies with litter types and with the identity of plant species has not yet been studied. We, therefore, carried out a seed germination experiment to determine the allelopathic effects of three ltter types of A. halodendron (roots, foliage, and stems) on seed germination of six plant species that progressively occur along a successional gradient in the semi-arid grasslands in the Horqin Sandy Land of northeastern China. In line with our expectation, we found that the early-successional species rather than the late-successional species were negatively affected by A. halodendron and that the allelopathic effects on seed germination increase with increasing concentration of litter extracts, irrespective of litter types. Our study evidenced the negative allelopathic effects of A. halodendron on the species replacement and on the community composition during dune stabilization in the Horqin Sandy Land. Further studies are needed to better understand the successional process and thus to promote the vegetation restoration in that sandy dune region as A. halodendron itself disappeared also during the process.

show abstract

Detecting Sustainability of Desertification Reversion: Vegetation Trend Analysis in Part of the Agro-Pastoral Transitional Zone in Inner Mongolia, China

Cited by 22 publications

References 42 publications

Nonlinear Changes in Dryland Vegetation Greenness over East Inner Mongolia, China, in Recent Years from Satellite Time Series

Nonlinear Changes in Dryland Vegetation Greenness over East Inner Mongolia, China, in Recent Years from Satellite Time Series

Spatial pattern of soil organic carbon and total nitrogen, and analysis of related factors in an agro-pastoral zone in Northern China

Artemisia halodendron Litters Have Strong Negative Allelopathic Effects on Earlier Successional Plants in a Semi-Arid Sandy Dune Region in China

Contact Info

Product

Resources

About