scholarly journals Screening of Weeds for Vegetation Recovery in a Pasture in the Semi-arid Region of the Loess Plateau in China.

1993 ◽  
Vol 38 (3) ◽  
pp. 182-189 ◽  
Author(s):  
Nobumasa Ichizen ◽  
Masaru Ogasawara ◽  
Hitoshi Kuramochi ◽  
Makoto Konnai ◽  
Wataru Sunohara ◽  
...  
Keyword(s):  
Loess Plateau ◽  
Arid Region ◽  
Vegetation Recovery ◽  
The Loess Plateau ◽  
Semi Arid Region ◽  
Semi Arid

Study of the Surface Reflectance Relationships Used in MODIS Retrieval Algorithm of Aerosols over the Semi-Arid Region of the Loess Plateau

2010 ◽  
Vol 30 (4) ◽  
pp. 928-934
Author(s):  
白鸿涛 Bai Hongtao ◽  
陈勇航 Chen Yonghang ◽  
冯建东 Feng Jiandong ◽  
黄建平 Huang Jianping ◽  
张文煜 Zhang Wenyu ◽  
...  
Keyword(s):  
Loess Plateau ◽  
Arid Region ◽  
Retrieval Algorithm ◽  
Surface Reflectance ◽  
The Loess Plateau ◽  
Semi Arid Region ◽  
Semi Arid

Factors affecting transpiration of Pinus tabulaeformis in a semi-arid region of the Loess Plateau

2008 ◽  
Vol 3 (2) ◽  
pp. 194-199 ◽  
Author(s):  
Weiqiang Zhang ◽  
Yunqi Wang ◽  
Kangning He ◽  
Yi Zhou ◽  
Xianhua Gan
Keyword(s):  
Loess Plateau ◽  
Arid Region ◽  
Pinus Tabulaeformis ◽  
The Loess Plateau ◽  
Factors Affecting ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Biomass Estimation, Nutrient Accumulation, and Stoichiometric Characteristics of Dominant Tree Species in the Semi-Arid Region on the Loess Plateau of China

2020 ◽  
Vol 12 (1) ◽  
pp. 339
Author(s):  
Guanghua Jing ◽  
Tianming Hu ◽  
Jian Liu ◽  
Jimin Cheng ◽  
Wei Li
Keyword(s):  
Loess Plateau ◽  
Tree Species ◽  
Arid Region ◽  
Pinus Tabulaeformis ◽  
Biomass Estimation ◽  
Betula Platyphylla ◽  
The Loess Plateau ◽  
Nutrient Stock ◽  
Semi Arid Region ◽  
Semi Arid

The biomass estimation, nutrient stock, and stoichiometric characteristics are critical for understanding forest productivity and quality. To date, there is not enough comprehensive research on nutrient stock and stoichiometric characteristics of each tissue among different tree species in the semi-arid region on the Loess Plateau. So, six dominant tree species were selected to estimate the forest biomass by allometric equation and to analyze the effects of tissue and species on biomass allocation and nutrient stock by variance analysis in our study. Results showed that forest biomass, nutrient concentration, nutrient stock, and stoichiometric characteristics varied with tissue and species. Betula platyphylla and Pinus tabulaeformis had high total biomass while Populus davidiana had the least total biomass, and the biomass allocation of each tissue generally followed the order of stem > branch > root > foliage. The weighted mean concentrations of carbon (C), nitrogen (N), and phosphorus (P) changed from 432.67 g·kg−1 to 481.43 g·kg−1, from 6.15 to 8.30 g·kg−1, and from 0.43 to 0.74 g·kg−1, respectively. The relatively high nutrient stocks were observed in Pinus tabulaeformis and Betula platyphylla across organs and in stem across species. The C:N and C:P ratios were higher in stem and root than those in branch and foliage for each species, while the effects of tissue on N:P varied with species. Overall, the N:P ranged from 7.92 for stem (Larix principis-rupprechtii) to 22.18 for foliage (Populus davidiana). Therefore, Pinus tabulaeformis and Betula platyphylla can increase effectively nutrient fixation capacity in the semi-arid region on the Loess Plateau. Also, N or P limitation of tree growth in this region varied with species.

scholarly journals The mid-domain effect of species diversity of mountainous plants is determined by community life form and family flora in a temperate semi-arid region of China

2018 ◽  
Author(s):  
Xu Manhou ◽  
Wen Jing
Keyword(s):  
Species Diversity ◽  
Arid Region ◽  
Life Form ◽  
Community Life ◽  
The Loess Plateau ◽  
Altitudinal Gradients ◽  
The Family ◽  
Plant Level ◽  
Semi Arid Region ◽  
Semi Arid

The mid-domain effect (MDE) is a vital hypothesis to explain altitudinal patterns of species diversity of mountainous plants with different gradients, but it is bounded in terms of its application at the plant level. To verify the MDE hypothesis, we chose a typical mountain with obvious elevation gradients and considerable plant coverage as a study area in the east of the Loess Plateau and partitioned various elevation belts across this mountain. Through measuring the species diversity of arbor, shrub and herb communities in forest ecosystems, we explored altitudinal patterns of species diversity of mountainous plants with different gradients. We determined that the family numbers of the herb and shrub communities, as well as the species diversity of the arbor community, reached their maximums at intermediate elevations. The family numbers of the herb and shrub communities presented unimodal patterns across altitudinal gradients, and the highest values occurred at intermediate elevations. The family number of the arbor community showed a monotonic decreasing pattern, and the importance values of dominant families in the shrub and arbor communities presented unimodal patterns, but the lowest values occurred at intermediate elevations. The species diversity of the herb, shrub and arbor communities conformed to unimodal change patterns following altitudinal gradients, but the greatest diversity occurred at high, low and intermediate elevations, respectively. At higher elevations, weeds and grasses grew well, whereas sedges grew well at lower elevations. With respect to the importance values of different arbor life forms, their responses to altitudinal gradients indicated a certain variation pattern, which was greater for evergreen coniferous arbor species than for deciduous coniferous arbor species and deciduous broad-leaved arbor species. It is concluded that the MDE hypothesis of species diversity for mountainous plants is influenced greatly by the community life form and family flora at the plant level in a temperate semi-arid region of the Loess Plateau, China. This conclusion tests and modifies the MDE hypothesis and can be valuable for fueling prediction of biodiversity models and for the comparison with similar studies in different regions.

scholarly journals The mid-domain effect of species diversity of mountainous plants is determined by community life form and family flora in a temperate semi-arid region of China

2018 ◽  
Author(s):  
Xu Manhou ◽  
Wen Jing
Keyword(s):  
Species Diversity ◽  
Arid Region ◽  
Life Form ◽  
Community Life ◽  
The Loess Plateau ◽  
Altitudinal Gradients ◽  
The Family ◽  
Plant Level ◽  
Semi Arid Region ◽  
Semi Arid

The mid-domain effect (MDE) is a vital hypothesis to explain altitudinal patterns of species diversity of mountainous plants with different gradients, but it is bounded in terms of its application at the plant level. To verify the MDE hypothesis, we chose a typical mountain with obvious elevation gradients and considerable plant coverage as a study area in the east of the Loess Plateau and partitioned various elevation belts across this mountain. Through measuring the species diversity of arbor, shrub and herb communities in forest ecosystems, we explored altitudinal patterns of species diversity of mountainous plants with different gradients. We determined that the family numbers of the herb and shrub communities, as well as the species diversity of the arbor community, reached their maximums at intermediate elevations. The family numbers of the herb and shrub communities presented unimodal patterns across altitudinal gradients, and the highest values occurred at intermediate elevations. The family number of the arbor community showed a monotonic decreasing pattern, and the importance values of dominant families in the shrub and arbor communities presented unimodal patterns, but the lowest values occurred at intermediate elevations. The species diversity of the herb, shrub and arbor communities conformed to unimodal change patterns following altitudinal gradients, but the greatest diversity occurred at high, low and intermediate elevations, respectively. At higher elevations, weeds and grasses grew well, whereas sedges grew well at lower elevations. With respect to the importance values of different arbor life forms, their responses to altitudinal gradients indicated a certain variation pattern, which was greater for evergreen coniferous arbor species than for deciduous coniferous arbor species and deciduous broad-leaved arbor species. It is concluded that the MDE hypothesis of species diversity for mountainous plants is influenced greatly by the community life form and family flora at the plant level in a temperate semi-arid region of the Loess Plateau, China. This conclusion tests and modifies the MDE hypothesis and can be valuable for fueling prediction of biodiversity models and for the comparison with similar studies in different regions.

Restoration and Utilization Mechanism of Degraded Grassland in the Semi-arid Region of Loess Plateau

2014 ◽  
Vol 44 (3) ◽  
pp. 267-279 ◽  
Author(s):  
JiMin CHENG ◽  
Yang GAO ◽  
ZhaoBin JING ◽  
JingWei JIN
Keyword(s):  
Loess Plateau ◽  
Arid Region ◽  
Semi Arid Region ◽  
Degraded Grassland ◽  
Semi Arid
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