نتایج جستجو برای: low rates of erosion

تعداد نتایج: 21265055  

  Soil organic carbon (SOC) is a principal component in soil quality assessment. Knowledge of SOC and total nitrogen (TN) stocks are important keys to understand the role of SOC in the global carbon cycle and, as a result, in the mitigation of global greenhouse effects. SOC and TN stocks are functions of the SOC concentration and the bulk density of the soil that are prone to changes, influe...

2015
Douglas W. Burbank Richard A. Beck

High rates of erosion (1-15 mm/yr) of fluvial strata have persisted over intervals of 0.2-1.5 m.y. and across areas of 60-2000 km 2 in the Cenozoic foreland basin of northern Pakistan. These rates occur in areas associated with thrust shortening, and they indicate that erosion nearly kept pace with the rates of latest Miocene to Pleistocene uplift. Such high rates of erosion are predicted to pr...

Journal: :Earth and Planetary Science Letters 2018

Journal: :Journal of environmental quality 2005
C A Moffet R E Zartman D B Wester R E Sosebee

Land application of biosolids is a beneficial-use practice whose ecological effects depend in part on hydrological effects. Biosolids were surface-applied to square 0.5-m2 plots at four rates (0, 7, 34, and 90 dry Mg ha(-1)) on each of three soil-cover combinations in Chihuahuan Desert grassland and shrubland. Infiltration and erosion were measured during two seasons for three biosolids post-ap...

2008
BENJAMIN M. JONES KENNETH M. HINKEL CHRISTOPHER D. ARP WENDY R. EISNER

This study presents modern erosion rate measurements based upon vertical aerial photography captured in 1955, 1979, and 2002 for a 100 km segment of the Beaufort Sea coastline. Annual erosion rates from 1955 to 2002 averaged 5.6 m a. However, mean erosion rates increased from 5.0 m a in 1955 –79 to 6.2 m a in 1979 –2002. Furthermore, from the first period to the second, erosion rates increased ...

2010
YONGQING QI JIYUAN LIU HUADING SHI DAFANG ZHUANG YUNFENG HU

Estimation of wind erosion rates of Mongolian Plateau by using 137Cs tracing technique. Wind erosion is one of the major environmental problems in semi-arid and arid regions. Here we established a transect from northwest (Tariat, Mongolia) to southeast (Xilingol, Inner Mongolia of China) across the Mongolian Plateau, and selected eight sampling sites along the transect. We then estimated the so...

Journal: :جغرافیا و مخاطرات محیطی 0
عادل سپهر سعیده هنرمندنژاد

introduction soil losses and erosion is one of the main causes of fertility decreasing, sedimentation in river cannels and irrigation canals, decreasing of storage capacity in dams, increasing of floods frequency, environmental pollution and it prevents from stable development. more than 70% of iran land is covered with arid and semi-arid areas. soil erosion as one of the main causes of soil de...

2006
Peter R. Robichaud

Erosion in the first year after a wildfire can be up to three orders of magnitude greater than the erosion from undisturbed forests. To mitigate potential postfire erosion, various erosion control treatments are applied on highly erodible areas with downstream resources in need of protection. Because postfire erosion rates generally decline by an order of magnitude for each year of recovery, ef...

2014
Dirk Scherler Bodo Bookhagen Manfred R. Strecker

[1] Erosion in the Himalaya is responsible for one of the greatest mass redistributions on Earth and has fueled models of feedback loops between climate and tectonics. Although the general trends of erosion across the Himalaya are reasonably well known, the relative importance of factors controlling erosion is less well constrained. Here we present 25 Be-derived catchment-averaged erosion rates...

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