ORIGINAL RESEARCH
Temporal-Spatial Variation Characteristics
of Soil Erosion in the Pisha Sandstone Area,
Loess Plateau, China
More details
Hide details
1
College of Environment and Planning, Henan University, Kaifeng, China
2
Key Laboratory of Geospatial Technology for Middle and Lower Yellow River Region, Kaifeng, China
3
Collaborative Innovation Center of Urban-Rural Coordinated Development, Zhengzhou, China
Submission date: 2018-03-15
Final revision date: 2018-07-02
Acceptance date: 2018-07-05
Online publication date: 2019-01-25
Publication date: 2019-03-01
Corresponding author
Yaochen Qin
Henan University, Jinming Road, Kaifeng, Henan Province, China, 475004 Kaifeng, China
Pol. J. Environ. Stud. 2019;28(4):2205-2214
KEYWORDS
TOPICS
ABSTRACT
Soil erosion in the Pisha sandstone area of the Loess Plateau in China has become a severe
environment issue that has raised concerns globally. The projects of ecological restoration in this area
and their impact on soil erosion have been analyzed using the unmanned aerial vehicle remote sensing
system (UAVRSS) and the revised universal soil loss equation (RUSLE) in the Two-Tiger Valley Basin
in 2013 and 2015. Our findings show that:
1) The volume of soil erosion and average soil erosion modulus decreased from 126.24 t year-1 and
6465.295 t km-2 year−1 to 114.7 t year-1 and 6333.19 t km-2 year−1 between 2013 and 2015, respectively.:
2) Spatial-temporal variations of soil erosion are extremely significant. All erosion grades recorded
different degrees of decline across the study period, except for the level of severe erosion.:
3) There is a significant positive correlation between slope degree and soil erosion. When the slope
degree was <5°, the soil erosion modulus was 51.355 t km-2 year−1, accounting for only 0.87 % of total
erosion in this area. When the slope degree was >35°, the soil erosion modulus attained 2574.413 t
km-2 year−1, and the erosion amount accounted for 43.52% of total erosion. Although anti-erosion and
the promotion of plant growth measures have achieved noticeable ecological benefits, the present
situation of preventing and controlling soil and water loss is still severe.