Land use change effects on soil quality and biological fertility: A case study in northern Iran

2019 ◽  
Vol 95 ◽  
pp. 103119 ◽  
Author(s):  
Esmaeil Bakhshandeh ◽  
Mehdi Hossieni ◽  
Mojtaba Zeraatpisheh ◽  
Rosa Francaviglia
Soil Research ◽  
2018 ◽  
Vol 56 (5) ◽  
pp. 509 ◽  
Author(s):  
Azadeh Gholoubi ◽  
Hojat Emami ◽  
Amin Alizadeh

Land-use change has been shown to affect soil quality and may lead to soil degradation. The effects of land-use change from natural forest to tea farming on soil properties and quality were studied within Guilan Province of northern Iran. Thirty-six soil samples (0–30 cm) were randomly collected from six sites with three replications at each site. The soil quality of forest and tea farms was determined using the cumulative rating (CR) index and the Cornell Comprehensive Assessment of Soil Health (CASH) scoring function. Effects of land-use change on soil quality or health were significant (P < 0.01) using both methods. Both methods for all regions (forest and tea fields) showed that forest land-use was more sustainable based on lower CR (lower limitation to crop production) and higher CASH scores (higher soil productivity and quality) than tea farm soils. Both methods were also negatively correlated with each other. Despite pH being a limiting factor for soil quality, it was not influenced by land-use change in most locations because the studied soils were acidic. However, organic carbon was the most important soil quality indicator, which was significantly correlated with soil physical, chemical and biological (respiration rate) properties. Therefore, land-use management practices that are continuously cultivated should include increases in organic carbon.


2012 ◽  
Vol 17 (2) ◽  
pp. 174-179 ◽  
Author(s):  
Chuanyan ZHOU ◽  
Xun CHEN ◽  
Xiaoling LIU ◽  
Weiquan ZHAO ◽  
Kun LI ◽  
...  

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 358
Author(s):  
Elena Gagnarli ◽  
Giuseppe Valboa ◽  
Nadia Vignozzi ◽  
Donatella Goggioli ◽  
Silvia Guidi ◽  
...  

Sustainable agriculture largely depends on soil biodiversity and requires efficient methods to assess the effectiveness of agronomic planning. Knowledge of the landscape and relative pedosite is enriched by data on the soil microarthropod community, which represent useful bio-indicators for early soil-quality detection in land-use change (LUC). In the hilly Maremma region of Grosseto, Italy, two areas, a >10ys meadow converted into a vineyard and an old biodynamic vineyard (no-LUC), were selected for evaluating the LUC effect. For maintaining soil vitality and ecosystem services by meadow, the vineyard was planted and cultivated using criteria of the patented “Corino method”. The aim was to evaluate the LUC impact, within one year, by assessing parameters characterizing soil properties and soil microarthropod communities after the vineyard was planted. The adopted preservative method in the new vineyards did not show a detrimental impact on the biodiversity of soil microarthropods, and in particular, additional mulching contributed to a quick recovery from soil stress due to working the plantation. In the short term, the adopted agricultural context confirmed that the targeted objectives preserved the soil quality and functionality.


Author(s):  
Kelsey Watts

Soils play a critical role to society as a medium that facilitates crop production and also contributes to the energy and carbon balance of the Earth System. Land-use change and improper land-use is one of the dominant factors affecting soil erosion and nutrient loss in soils. We examined the effects of land-use change on an Elmbrook clay/clay-loam soil on a farm in Ameliasburg on the northern part of Prince Edward County. Three cover types were examined: a sod field (established for over 10 years), a wheat field (part of a wheat/corn/soybean rotation for 30 years) and an undisturbed deciduous forest. Under each land-use type, cores to a depth of 40 cm were collected along three random 30 m transects (at 8, 16 and 24 m), then divided them into 10 cm increments, combining all similar depth increments along one transect. Soil quality was assessed by analyzing various soil physical and chemical properties. Bulk density of the soil was much higher (1.55 vs. 0.95 g/cm3) in both agricultural ecosystems compared to the forest, but only in the 0-10 cm layer. Soil moisture at 60% water holding capacity was much greater for the forest than the sod and wheat soils. Soil pH was slightly lower in the forest compared to the sod and wheat fields. The sod and wheat fields showed losses of ~52% and ~53% organic matter, respectively, in contrast to the forested area. The greatest differences in organic matter and total carbon were found in the top 10 cm, likely due to the greater accumulation of litter at the ground surface in the forest compared to the agricultural sites. It appears that long-term (10 year) agricultural production has led to a decline in some, but not all, soil quality measures, particularly soil organic matter, bulk density and water holding capacity. These findings are consistent with much of the literature concerning the effects of land-use change on soil quality, and highlight the need to develop improved management systems to minimize losses in soil quality that can lead to declines in the productivity potential of soils over time.


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