Soil nutrients in relation to land use and landscape position in the semi-arid small catchment on the loess plateau in China

2001 ◽  
Vol 48 (4) ◽  
pp. 537-550 ◽  
Author(s):  
Jun Wang ◽  
Bojie Fu ◽  
Yang Qiu ◽  
Liding Chen
Keyword(s):  
Land Use ◽  
Soil Nutrients ◽  
Loess Plateau ◽  
Landscape Position ◽  
The Loess Plateau ◽  
Small Catchment ◽  
Semi Arid

The effect of land use structure on the distribution of soil nutrients in the hilly area of the Loess Plateau, China

1999 ◽  
Vol 44 (8) ◽  
pp. 732-736 ◽  
Author(s):  
Bojie Fu ◽  
Keming Ma ◽  
Huafeng Zhou ◽  
Liding Chen
Keyword(s):  
Land Use ◽  
Soil Nutrients ◽  
Loess Plateau ◽  
The Loess Plateau ◽  
Hilly Area ◽  
Land Use Structure

Temporal change in land use and its relationship to slope degree and soil type in a small catchment on the Loess Plateau of China

CATENA ◽  
2006 ◽  
Vol 65 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Bo-Jie Fu ◽  
Qiu-Ju Zhang ◽  
Li-Ding Chen ◽  
Wen-Wu Zhao ◽  
Hubert Gulinck ◽  
...  
Keyword(s):  
Land Use ◽  
Loess Plateau ◽  
Soil Type ◽  
Temporal Change ◽  
The Loess Plateau ◽  
Small Catchment

scholarly journals Long-Term Growth of Alfalfa Increased Soil Organic Matter Accumulation and Nutrient Mineralization in a Semi-Arid Environment

2021 ◽  
Vol 9 ◽  
Author(s):  
Xin Song ◽  
Chao Fang ◽  
Zi-Qiang Yuan ◽  
Feng-Min Li
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Soil Nutrients ◽  
Root Biomass ◽  
Sweet Clover ◽  
The Loess Plateau ◽  
Biomass Density ◽  
Nutrient Mineralization ◽  
Semi Arid

Land use patterns and vegetation coverage in semi-arid areas of the Loess Plateau have undergone great changes due to the implementation of the “Grain for Green” project. The introduction of legume pasture species, such as alfalfa (Medicago sativa L.) and sweet clover (Melilotus officinalis L.), is one of the most efficient methods of vegetation restoration and reconstruction in this region. However, there is a need for an effective assessment of the root system distribution and its interaction with soil after long-term introduction. An experiment involving the introduction of alfalfa and sweet clover on abandoned farmlands was initiated in 2003 to assess the long-term effects. After 17 years, root and soil samples at depths of 0–20 and 20–60 cm were collected to characterize the root biomass, root carbon (C), nitrogen (N), and phosphorus (P), soil microbial biomass carbon (MBC) and nitrogen (MBN), soil organic carbon (SOC), and soil N and P. The results showed that the root biomass density of alfalfa in the 0–20 and 20–60 cm layers (63.72 and 12.27 kg m–3, respectively) were significantly higher than for sweet clover (37.43 and 8.97 kg m–3, respectively) and under natural abandonment (38.92 and 9.73 kg m–3, respectively). The SOC, total nitrogen (TN), total phosphorus (TP), available phosphorus (AP), nitrate-nitrogen (NO3–-N), MBC and MBN in the 0–20 and 20–60 cm layers were higher after alfalfa introduction compared with sweet clover introduction and natural abandonment, although the ammonia-nitrogen (NH4+-N) concentration in the 0–20 cm layer was lower. There were significantly positive correlations between root biomass density and both soil nutrients and microbial biomass, while there was a negative correlation between the soil NH4+-N and root biomass density. These results indicate that alfalfa root growth improved soil organic matter accumulation and nutrient mineralization. The accumulation and mineralization of soil nutrients also guaranteed root and microorganism growth. Therefore, it was concluded that alfalfa introduction will promote soil nutrients immobilization and mineralization and may enable sustainable land use in the semi-arid region of the Loess Plateau, China.

scholarly journals Land use evaluation and scenario analysis towards sustainable planning on the Loess Plateau in China—case study in a small catchment

CATENA ◽  
2003 ◽  
Vol 54 (1-2) ◽  
pp. 303-316 ◽  
Author(s):  
Liding Chen ◽  
Ingmar Messing ◽  
Shurong Zhang ◽  
Bojie Fu ◽  
Stig Ledin
Keyword(s):  
Land Use ◽  
Loess Plateau ◽  
Scenario Analysis ◽  
The Loess Plateau ◽  
Small Catchment ◽  
Sustainable Planning

Effect of land use on soil nutrients in the loess hilly area of the Loess Plateau, China

2006 ◽  
Vol 17 (5) ◽  
pp. 453-465 ◽  
Author(s):  
J. Gong ◽  
L. Chen ◽  
B. Fu ◽  
Y. Huang ◽  
Z. Huang ◽  
...  
Keyword(s):  
Land Use ◽  
Soil Nutrients ◽  
Loess Plateau ◽  
The Loess Plateau ◽  
Hilly Area

scholarly journals Effects of Vegetation Restoration on Soil Erosion on the Loess Plateau: A Case Study in the Ansai Watershed

2021 ◽  
Vol 18 (12) ◽  
pp. 6266
Author(s):  
Hui Wei ◽  
Wenwu Zhao ◽  
Han Wang
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Loess Plateau ◽  
Water Conservation ◽  
Large Scale ◽  
Land Use Changes ◽  
Vegetation Restoration ◽  
The Loess Plateau ◽  
Local Soil ◽  
Erosion Environment

Large-scale vegetation restoration greatly changed the soil erosion environment in the Loess Plateau since the implementation of the “Grain for Green Project” (GGP) in 1999. Evaluating the effects of vegetation restoration on soil erosion is significant to local soil and water conservation and vegetation construction. Taking the Ansai Watershed as the case area, this study calculated the soil erosion modulus from 2000 to 2015 under the initial and current scenarios of vegetation restoration, using the Chinese Soil Loess Equation (CSLE), based on rainfall and soil data, remote sensing images and socio-economic data. The effect of vegetation restoration on soil erosion was evaluated by comparing the average annual soil erosion modulus under two scenarios among 16 years. The results showed: (1) vegetation restoration significantly changed the local land use, characterized by the conversion of farmland to grassland, arboreal land, and shrub land. From 2000 to 2015, the area of arboreal land, shrub land, and grassland increased from 19.46 km2, 19.43 km2, and 719.49 km2 to 99.26 km2, 75.97 km2, and 1084.24 km2; while the farmland area decreased from 547.90 km2 to 34.35 km2; (2) the average annual soil erosion modulus from 2000 to 2015 under the initial and current scenarios of vegetation restoration was 114.44 t/(hm²·a) and 78.42 t/(hm²·a), respectively, with an average annual reduction of 4.81 × 106 t of soil erosion amount thanks to the vegetation restoration; (3) the dominant soil erosion intensity changed from “severe and light erosion” to “moderate and light erosion”, vegetation restoration greatly improved the soil erosion environment in the study area; (4) areas with increased erosion and decreased erosion were alternately distributed, accounting for 48% and 52% of the total land area, and mainly distributed in the northwest and southeast of the watershed, respectively. Irrational land use changes in local areas (such as the conversion of farmland and grassland into construction land, etc.) and the ineffective implementation of vegetation restoration are the main reasons leading to the existence of areas with increased erosion.

Sediment source analysis using the fingerprinting method in a small catchment of the Loess Plateau, China

2016 ◽  
Vol 16 (5) ◽  
pp. 1655-1669 ◽  
Author(s):  
Fangxin Chen ◽  
Fengbao Zhang ◽  
Nufang Fang ◽  
Zhihua Shi
Keyword(s):  
Loess Plateau ◽  
Source Analysis ◽  
Sediment Source ◽  
The Loess Plateau ◽  
Small Catchment ◽  
Fingerprinting Method

A scenario exploration of strategic land use options for the Loess Plateau in northern China

2004 ◽  
Vol 79 (2) ◽  
pp. 145-170 ◽  
Author(s):  
C.H. Lu ◽  
M.K. van Ittersum ◽  
R. Rabbinge
Keyword(s):  
Land Use ◽  
Loess Plateau ◽  
Northern China ◽  
The Loess Plateau
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