Grand challenges and opportunities in basic soil science research and the discipline of soil science

نویسندگان

  • Donald L. Sparks
  • S. Hallock
چکیده

Contributions in basic soil science research have immensely benefited humankind, including enhanced agricultural production and the quality of our environment. This review focuses on recent breakthroughs in the fields of soil properties and processes and delineates frontiers for the present decade and beyond. Frontiers will undoubtedly involve multiple spatial and temporal scale investigations, elucidation of reactions at biological, chemical, and physical interfaces, and the use of advanced in situ technologies in combination with interdisciplinary research efforts to unlock important information on: speciation of contaminants in soils; cycling of trace elements and nutrients and impacts on global climate change; development of field scale hydrologic and geochemical models to accurately predict the rate, fate, and transport of contaminants in the subsurface environment; elucidation of mechanisms for microbial transformations of contaminants; unraveling the precise structure of soil organic matter; and enhanced understanding of rhizosphere chemistry in various environmental settings.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Grand challenges in the research on soil processes

The exercise of identifying the key challenges faced by a discipline at a given moment can be rewarding. History suggests that soil science has tended to leap forward most significantly when a momentous event or significant societal pressure encouraged researchers to focus their attention on a single challenge, or at most on a few of them. For example, in the middle of the eighteenth century, f...

متن کامل

Soil salinity and nutrients pattern along a distance gradient in coastal region

Soil salinity is considered as one of the major challenges in coastal agriculture in Bangladesh yet geographical extent of soil salinity and nutrients status have received little or no attention. This study investigated the patterns of soil salinity, total nitrogen, phosphorous, potassium and sulfur between agricultural and fallow land along a 90 km distance from the coastline in Noakhali, Bang...

متن کامل

The effect of incubation time and silk worm cocoon on mobility of zinc and copper in contaminated clay soil

Of the problematic agents in the ecosystem, heavy metals have special importance because they are unabsorbable and have physiologic effects on living beings at low concentrations. This study has investigated the effect of silk worm cocoon on reducing mobility of zinc (Zn) and copper (Cu) for the first time. To this end, 5% cocoon adsorbent was added to the studied soil, which had been contamina...

متن کامل

Analysis, source identification and health risk assessment of polychlorinated biphenyls (PCBs) in surface soils from different land types of northern, eastern and western parts of city of Tehran, Iran

Polychlorinated biphenyls (PCBs) are a group of persistent organic pollutants that due to their characteristics including bioaccumulation potential and persistence in the environment; can pose adverse effects on human and environmental health. Therefore, this study was performed to analysis, source identification and health risk assessment of PCBs in surface soil samples collected from some lan...

متن کامل

The ability of layered double hydroxides for nitrate absorption and desorption in crop and fallow rotation

BACKGROUND AND OBJECTIVES: This study aims down to evaluate the ability of chloride magnesium- aluminium- layered double hydroxides (4:1) for nitrate adsorption from the soil solution in successive cropping periods. METHODS: The study was conductedunder long-term cropping periods, including first crop): bell pepper; second crop: mentheae; third crop: cher...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004