Surface roughness response of biocrust-covered soil to mimicked sheep trampling in the Mu Us sandy Land, northern China

Geoderma ◽  
2020 ◽  
Vol 363 ◽  
pp. 114146
Author(s):  
Yong-Sheng Wu ◽  
Xin-Rong Li ◽  
Hasi-Eerdun ◽  
Rui-Ping Yin ◽  
Tie-Jun Liu
Keyword(s):  
Surface Roughness ◽  
Northern China ◽  
Sandy Land ◽  
Mu Us Sandy Land

Effects of biological crusts on dew deposition and evaporation in the Southern Edge of the Mu Us Sandy Land, Northern China

2013 ◽  
Vol 33 (19) ◽  
pp. 6173-6180 ◽  
Author(s):  
尹瑞平 YIN Ruiping ◽  
吴永胜 WU Yongsheng ◽  
张欣 ZHANG Xin ◽  
哈斯 HA Si ◽  
田秀民 TIAN Xiumin ◽  
...  
Keyword(s):  
Northern China ◽  
Sandy Land ◽  
Mu Us Sandy Land ◽  
Dew Deposition

scholarly journals Spatiotemporal dynamic evolution and driving factors of desertification in the Mu Us Sandy Land in 30 years

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Xueying Han ◽  
Guangpu Jia ◽  
Guang Yang ◽  
Ning Wang ◽  
Feng Liu ◽  
...  
Keyword(s):  
Central Area ◽  
Northern China ◽  
Northern Region ◽  
Sandy Land ◽  
Aeolian Desertification ◽  
Mu Us Sandy Land ◽  
Annual Change Rate ◽  
Three Stages ◽  
Inducing Factors ◽  
Environmental Protection Policies

AbstractThe Mu Us Sandy Land is located in the middle of the farming pastoral ecotone of northern China. The direction of the development of desertification has a direct impact on the economy and development of the northern region. Six remote sensing images acquired during 1990–2017 served as data sources. Using an ENVI 5.3 and ArcGIS 10.3 platform an analysis was conducted of the dynamic changes nearly 30 years in desertified land using a center of gravity moving model, annual change rate, a transfer matrix, and an aeolian desertification index; the factors driving desertification were discussed. The research shows that the time period can be divided into three stages of desertification: development (1990–2000), rapid reversal (2000–2010), and stable reversal (2010–2017). A total of 1680 km2 of desertification were managed over the three stages. Spatially, the distribution of the center of desertification from west to east includes mild, moderate, severe, and extreme desertification, which is consistent with the spatial distribution trends of desertified land in the Mu Us Sandy Land. By the end of 2017, the degree of desertification of the Mu Us Sandy Land was in the central area > northwest > southwest > east > south. Nearly 30 years, the wind speed has decreased year by year at the rate of 0.1 m s−1, which directly reduce the ability to winds to transport soil in the Mu Us Sandy Land and promoted the reversal of desertification. From 1990 to 2010, the climate tended to become warmer and drier. Environmental protection policies along with human intervention and control of desertification have played important roles in reversing desertification. From 2010 to 2020, under the general background of a warm-wet climatic tendency, rational use of sand resources and strengthening scientific control of desertification inducing factors are the keys to reversing desertification.

scholarly journals Groundwater evapotranspiration under psammophilous vegetation covers in the Mu Us Sandy Land, northern China

2016 ◽  
Vol 9 (1) ◽  
pp. 98-108 ◽  
Author(s):  
Donghui Cheng ◽  
Jibo Duan ◽  
Kang Qian ◽  
Lijun Qi ◽  
Hongbin Yang ◽  
...  
Keyword(s):  
Northern China ◽  
Sandy Land ◽  
Mu Us Sandy Land ◽  
Groundwater Evapotranspiration

scholarly journals Stemflow and its controlling factors in the subshrub Artemisia ordosica during two contrasting growth stages in the Mu Us sandy land of northern China

2015 ◽  
Vol 47 (2) ◽  
pp. 409-418 ◽  
Author(s):  
Liu Li ◽  
Xiao-Yan Li ◽  
Si-Yi Zhang ◽  
Zhi-Yun Jiang ◽  
Xiao-Ran Zheng ◽  
...  
Keyword(s):  
Growth Stage ◽  
Canopy Structure ◽  
Northern China ◽  
Growth Stages ◽  
Sandy Land ◽  
Artemisia Ordosica ◽  
Growth Season ◽  
Area Index ◽  
Mu Us Sandy Land ◽  
Canopy Area

The yield of stemflow from vegetation is mostly affected by rainfall and canopy structure, but few past studies have paid attention to the dynamics of canopy structure during the growth season. Artemisia ordosica is a typical subshrub, very different from trees and shrubs. Assessing the influence of canopy structure and rainfall on stemflow yield in A. ordosica during the growth season will fill a knowledge gap in our understanding of stemflow yield from subshrub species. This study therefore examined the effects of those two factors on stemflow at two growth stages of A. ordosica, using 20 experimental individuals in the Mu Us sandy land of northern China. It demonstrated that the mean stemflow percentage of gross rainfall (SF%) for this subshrub was 8.56%, and the average funneling ratio was 75.80. The critical control factors of stemflow volumes were rainfall amount and canopy area, which varied greatly during the growth season. The SF% was significantly lower during the reproductive growth stage than during the vegetative growth stage, because of the rapid increase in leaf area index at the former stage. This evaluation of the effects of vegetation growth dynamics on stemflow yield will improve the accuracy of future hydrological models.

Holocene resistant substrate and their roles in ecological safety of the Mu Us sandy land, Northern China

CATENA ◽  
2018 ◽  
Vol 165 ◽  
pp. 92-99
Author(s):  
Xiaokang Liu ◽  
Ruijie Lu ◽  
Jing Du ◽  
Zhiqiang Lü ◽  
Chang Liu ◽  
...  
Keyword(s):  
Northern China ◽  
Ecological Safety ◽  
Sandy Land ◽  
Mu Us Sandy Land

Research on the Succession of Artemisia ordosica Community in Mu Us Sandy Land

2014 ◽  
Vol 989-994 ◽  
pp. 975-977
Author(s):  
Jun Hong Zhang
Keyword(s):  
Soil Water ◽  
Dominant Species ◽  
Sand Dunes ◽  
Biological Soil Crust ◽  
Northern China ◽  
Soil Crust ◽  
Sandy Land ◽  
Artemisia Ordosica ◽  
Mu Us Sandy Land ◽  
Long Time

Mu Us sandy land is an important ecological barrier in Northern China. Artemisia ordosica is the dominant species in Mu Us sandy land, the development of biological soil crust in Artemisia ordosica community seriously impediment precipitations, which result in the deterioration of soil water within 40cm, where most of Artemisia ordosica roots distribution. That led to the recession of Artemisia ordosica in the fixed sand dunes in a long time.

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