نتایج جستجو برای: it causes soil moisture shortage and reduced current waters

تعداد نتایج: 17047266  

2004
Wolfgang Wagner Carsten Pathe

The potential of Synthetic Aperture Radars (SARs) for measuring soil moisture has been recognised about 30 years ago, but still today the search for suitable sensors and widely applicable soil moisture retrieval algorithms is on-going. Because it is now important to find new directions in SAR soil moisture research, the current state of the art in SAR technology and methodological issues must b...

2017
Guanghui Yuan Lei Zhang Jiening Liang Xianjie Cao Hui Liu Zhaohong Yang

To investigate the mechanism of available energy partitioning to sensible and latent heat fluxes over semi-arid regions, data from the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL) were analyzed to assess the effects of soil moisture, net radiation, and vapor pressure deficit (VPD) on available energy partitioning, as quantified by Bowen ratio. It was found that th...

2013
Ying Gao Jeffrey P. Walker Dongryeol Ryu Alessandra Monerris

Soil moisture plays a key role in many hydrological and agricultural processes because it controls the water and heat energy exchange between the earth and the atmosphere. Addressing the need for routine global surface soil moisture maps, the European Space Agency (ESA) launched the Soil Moisture and Ocean Salinity (SMOS) mission in 2009. It provides L-band microwave brightness temperature obse...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد علوم دارویی - پژوهشکده علوم 1392

purpose a metabolic abnormality such as obesity is a major obstacle in the maintenance of the human health system and causes various chronic diseases including type 2 diabetes, hypertension, cardiovascular diseases, as well as various cancers. this study was designed to summarize the recent scientific knowledge regarding the anti-obesity role of curcumin (diferuloylmethane), which is isolated f...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1390

apart from other aspects, desert is a natural environment and is one of the appealing terrestrial elements. putting its symbolic and fictional senses aside, the term “desert” bears mystic sense more than material sense. in addition to the worlds materialistic experiences, desert has attracted the attention of writers because it creates a kind of inner experience, which returns the individual in...

پایان نامه :0 1391

employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...

2010
Xiangjun Tian Zhenghui Xie Aiguo Dai Binghao Jia Chunxiang Shi

[1] To make use of satellite microwave observations for estimating soil moisture, a dual‐pass land data assimilation system (DLDAS) is developed in this paper by incorporating a dual‐pass assimilation framework into the Community Land Model version 3 (CLM3). In the DLDAS, the model state (volumetric soil moisture content) and model parameters are jointly optimized using the gridded Advanced Mic...

2003
Jeffrey P. Walker Paul R. Houser Garry R. Willgoose

Active microwave remote sensing observations of backscattering, such as C-band vertically polarized synthetic aperture radar (SAR) observations from the second European remote sensing (ERS-2) satellite, have the potential to measure moisture content in a near-surface layer of soil. However, SAR backscattering observations are highly dependent on topography, soil texture, surface roughness and s...

2015
Xinbing Wang Baoyuan Zhou Xuefang Sun Yang Yue Wei Ma Ming Zhao Jin-Song Zhang

The spatial distribution of the root system through the soil profile has an impact on moisture and nutrient uptake by plants, affecting growth and productivity. The spatial distribution of the roots, soil moisture, and fertility are affected by tillage practices. The combination of high soil density and the presence of a soil plow pan typically impede the growth of maize (Zea mays L.).We invest...

Journal: :Nucleation and Atmospheric Aerosols 2023

The article presents the results of a study influence land reclamation regime due to cotton irrigation, biological reduction salinity collector-drainage waters using aquatic plants create additional water sources, irrigate crops, and obtain sustainable yields in conditions shortage. Experience increased mineralization drainage small ponds. From plants, such as Lemna minor, Azolla caroliniana Ei...

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