scholarly journals Occurrence and distribution of heavy metals and tetracyclines in agricultural soils after typical land use change in east China

2013 ◽  
Vol 20 (12) ◽  
pp. 8342-8354 ◽  
Author(s):  
Longhhua Wu ◽  
Xia Pan ◽  
Like Chen ◽  
Yujuan Huang ◽  
Ying Teng ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Land Use Change ◽  
Agricultural Soils ◽  
East China

Divergent response of heavy metal bioavailability in soil rhizosphere to agricultural land use change from paddy field to various drylands

2021 ◽  
Author(s):  
Yujuan Gao ◽  
Jianli Jia ◽  
Beidou Xi ◽  
Dongyu Cui ◽  
Wenbing Tan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Land Use ◽  
Land Use Change ◽  
Agricultural Land ◽  
Rhizosphere Soil ◽  
Agricultural Land Use ◽  
Metal Bioavailability ◽  
Soil Rhizosphere ◽  
Divergent Response

The heavy metal pollution induced by agricultural land use change has attracted great attention. In this study, the divergent response of bioavailability of heavy metals in rhizosphere soil to different...

Effects of urban land-use change in East China on the East Asian summer monsoon based on the CAM5.1 model

2015 ◽  
Vol 46 (9-10) ◽  
pp. 2977-2989 ◽  
Author(s):  
Hongyun Ma ◽  
Zhihong Jiang ◽  
Jie Song ◽  
Aiguo Dai ◽  
Xiuqun Yang ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Summer Monsoon ◽  
East Asian Summer Monsoon ◽  
Asian Summer Monsoon ◽  
East Asian ◽  
Urban Land Use ◽  
East China ◽  
Asian Summer ◽  
Urban Land Use Change

scholarly journals Heavy metals in suburban gardens and the implications of land-use change following a major earthquake

2018 ◽  
Vol 88 ◽  
pp. 10-16 ◽  
Author(s):  
Seyedardalan Ashrafzadeh ◽  
Niklas J. Lehto ◽  
Gareth Oddy ◽  
Ron G. McLaren ◽  
Lingfen Kang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Land Use Change ◽  
Major Earthquake

scholarly journals Heavy Metals in Agricultural Soils of Central Ethiopia: The Contribution of Land Use Types and Organic Sources to Their Variability

2016 ◽  
Vol 06 (06) ◽  
pp. 99-112
Author(s):  
Nigatu Alemayehu Minase ◽  
Mary M. Masafu ◽  
Abule Ebro Geda ◽  
Azage Tegegne Wolde
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Agricultural Soils ◽  
Central Ethiopia ◽  
Land Use Types

Pedogenic carbonates accumulation in a calcareous Mediterranean soil following introduction of irrigation

2021 ◽  
Author(s):  
Isabel Sonsoles De Soto ◽  
Iñigo Virto ◽  
Alberto Enrique ◽  
Rodrigo Antón ◽  
Pierre Barré ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Nutrient Dynamics ◽  
Agricultural Soils ◽  
Relative Proportion ◽  
Soil Productivity ◽  
Soil Matrix ◽  
Pedogenic Carbonates ◽  
Short Period ◽  
Soil Carbonates

<p>In calcareous Mediterranean soils, pedogenic and lithogenic carbonates can be important constituents of the soil matrix. However, their relative proportion and their relation to soil functioning has been scarcely studied. The interest in determining the proportion of pedogenic carbonates relies on the fact that they can be related to the physical, chemical and biological properties of the soil and, therefore, affect plant growth and soil productivity. Carbonates dynamics can be affected by some farming management practices and land-use changes, such as the adoption of irrigation, due to changes in the soil water regime, the composition of the soil solution, the concentration of CO<sub>2</sub> in the soil atmosphere, and the changes related to fertilization.</p><p>To gain knowledge on the importance of the effect of the introduction of irrigation on carbonates dynamics in the tilled layer of agricultural soils, we studied the evolution of the proportion of pedogenic carbonates in a Mediterranean calcareous soil after seven years of irrigation. We used the isotopic signature of C in soil carbonates for these estimations. The study was conducted in two plots under contrasting agricultural management on the same soil unit: dryland wheat cropping, and irrigated corn for 7 consecutive years, in Enériz (Navarre, Spain).</p><p>Our results showed that the transformation of dryland wheat to irrigated corn, produced a preferential accumulation of pedogenic carbonates (31-56%) in the tilled layer (0-30 cm) of the irrigated soil only over 7 years after the land-use change. Therefore, the processes related to this land use change can alter the soil carbonates dynamics in a very short period of time, and they may have consequences in terms of plant nutrient dynamics and the soil structure. Future research on the origin of the soil carbonates (pedogenic or geogenic) in agricultural soils will help to understand the actual significance of carbonates dynamics in terms of the global C balance in these soils.</p>

Effects of land use history on heavy metals concentration in agricultural soils

2020 ◽  
Author(s):  
Giulio Genova ◽  
Georg Niedrist ◽  
Stefano Della Chiesa ◽  
Erich Tasser ◽  
Luigimaria Borruso ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Land Use ◽  
Agricultural Soils ◽  
Accumulation Rate ◽  
Crop Management ◽  
Apple Orchards ◽  
Historical Land Use ◽  
Accumulation Trend ◽  
Land Use Maps

<p>Intensive agricultural management can have significant impacts on soil properties. Such effects and their degree are often related to the history of land use and to the agronomic practices. When legacy soil data are missing, historical land use maps can help to describe how crop management might have changed the concentration of certain elements in soils. In this study, we prove how permanent crop management (vineyards and apple orchards) influenced heavy metal concentration in agricultural soils in South Tyrol, Italy. We selected areas where land-use change was unidirectional going from forests, grasslands and arable lands to apple orchards or vineyards. We hypothesize that the heavy metal accumulation in the soil starts when a parcel is converted to intensive permanent crops. This hypothesis allows us to see if there are any significant differences between parcels with a longer or shorter intensive agriculture history. We used approx. 6000 soil samples analyzed between 2006 and 2016 and coupled them with historical land use maps dating from the 1850s until today. Soils that have been cultivated as apple orchards or vineyards since the 1850s are characterized by higher concentrations of Cu. The oldest vineyards have much higher soil Cu concentrations than apple orchards of the same age with a median content of 342 mg kg<sup>–1</sup> and 212 mg kg<sup>–1</sup> of Cu respectively. Similar patterns, but with smaller extent can be described also for Zn concentration. Comparing the age of vineyards with today’s concentration we estimate an accumulation rate of 2.4 mg kg<sup>–1</sup> year<sup>–1</sup> of Cu. We conclude that historical land use maps are extremely helpful in understanding today’s soil characteristics especially with not degradable pollutants such as heavy metals. High concentrations of Cu in vineyards reveal the widespread and abundant use of this metal in viticulture for plant defense programs through time. The accumulation trend proves that further research and monitoring is needed to understand spatial and temporal pattern of Cu and Zn pollution in intensively managed permanent crops and to estimate their impact on taxonomical and functional fungal and bacterial diversity. These aspects are of pivotal role in determining the soil fertility levels of our cultivated soils.</p>

scholarly journals Attribution Analysis for Runoff Change on Multiple Scales in a Humid Subtropical Basin Dominated by Forest, East China

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 184 ◽  
Author(s):  
Qinli Yang ◽  
Shasha Luo ◽  
Hongcai Wu ◽  
Guoqing Wang ◽  
Dawei Han ◽  
...  
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Land Use Change ◽  
Climate Variability ◽  
Human Activity ◽  
Multiple Scales ◽  
East China ◽  
Runoff Change ◽  
Change Period ◽  
Annual Scale

Attributing runoff change to different drivers is vital in order to better understand how and why runoff varies, and to further support decision makers on water resources planning and management. Most previous works attributed runoff change in the arid or semi-arid areas to climate variability and human activity on an annual scale. However, attribution results may differ greatly according to different climatic zones, decades, temporal scales, and different contributors. This study aims to quantitatively attribute runoff change in a humid subtropical basin (the Qingliu River basin, East China) to climate variability, land-use change, and human activity on multiple scales over different periods by using the Soil and Water Assessment Tool (SWAT) model. The results show that runoff increased during 1960–2012 with an abrupt change occurring in 1984. Annual runoff in the post-change period (1985–2012) increased by 16.05% (38.05 mm) relative to the pre-change period (1960–1984), most of which occurred in the winter and early spring (March). On the annual scale, climate variability, human activity, and land-use change (mainly for forest cover decrease) contributed 95.36%, 4.64%, and 12.23% to runoff increase during 1985–2012, respectively. On the seasonal scale, human activity dominated runoff change (accounting for 72.11%) in the dry season during 1985–2012, while climate variability contributed the most to runoff change in the wet season. On the monthly scale, human activity was the dominant contributor to runoff variation in all of the months except for January, May, July, and August during 1985–2012. Impacts of climate variability and human activity on runoff during 2001–2012 both became stronger than those during 1985–2000, but counteracted each other. The findings should help understandings of runoff behavior in the Qingliu River and provide scientific support for local water resources management.

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