نتایج جستجو برای: soil water content

تعداد نتایج: 1056794  

Journal: Desert 2010
a. bahremand h. barani m. mesdaghi m. sharafatmandrad

Abstract The impact of rainfall and light interception by litter on maintenance of surface soil water content is determined in an arid rangeland in Khabr National Park in south-east of Iran. Litter weight sampling is done by 90 square plots, each 1 m2, that are randomly placed within site. After determining the intensity of a typical storm of the region (20 mm/h), the rainfall duration requir...

ژورنال: علوم آب و خاک 2015
زارعی, وریا, شکل‌آبادی, محسن,

The aim of the study was to investigate the effects of land use on soil quality parameters using multivariate statistical analysis. Soil samples (0-25 and 25-50 cm depths) were taken from three land uses in forest area of Marivan including forest, rangeland, and cultivated land. Soil characteristics of pH, EC, sand, silt, clay and CaCO3 content, water-stable aggregates and their organic carbon ...

2017
Qingzhao Kong Hongli Chen Yi-Lung Mo Gangbing Song

A quantitative understanding of soil water content or soil water status is of great importance to many applications, such as landslide monitoring, rockfill dam health monitoring, precision agriculture, etc. In this paper, a feasibility study was conducted to monitor the soil water content in real time using permanent embedded piezoceramic-based transducers called smart aggregates (SAs). An acti...

2016
Ali Fares Ripendra Awal Haimanote K. Bayabil

Studies show that the performance of soil water content monitoring (SWCM) sensors is affected by soil physical and chemical properties. However, the effect of organic matter on SWCM sensor responses remains less understood. Therefore, the objectives of this study are to (i) assess the effect of organic matter on the accuracy and precision of SWCM sensors using a commercially available soil wate...

2003
C. F. Souza

concluded that coaxial probe design was superior to two-wire probes with a balancing transformer. Management of favorable conditions for plant growth within parTopp and Davis (1985) extended measurement capatially wet soil volumes under drip irrigation presents a measurement bilities from a small volume (point) to multiple depths challenge. Typically, soil water status is determined from a sing...

2015
Hao Zheng Jixi Gao Yanguo Teng Chaoyang Feng Meirong Tian

Drought and shortages of soil water are becoming extremely severe due to global climate change. A better understanding of the relationship between vegetation type and soil-moisture conditions is crucial for conserving soil water in forests and for maintaining a favorable hydrological balance in semiarid areas, such as the Saihanwula National Nature Reserve in Inner Mongolia, China. We investiga...

2013
Diego Andrés Riveros-Iregui Brian L. McGlynn Howard E. Epstein Daniel L. Welsch Diego A. Riveros-Iregui

Interpretation and evaluation of combined measurement techniques for soil CO 2 efflux: Discrete surface chambers and continuous soil CO 2 concentration probes" [1] Soil CO 2 efflux is a large respiratory flux from terrestrial ecosystems and a critical component of the global carbon (C) cycle. Lack of process understanding of the spatiotemporal controls on soil CO 2 efflux limits our ability to ...

Determination of vegetation and soil interaction is necessary for sustainable use of rangeland ecosystem. Soil-vegetation interrelationships in galbanum (Ferula gummosa) habitats of Ataeeye and Shoorrud- Khorasan-e- Razavi Province, Iran were studied using multivariate analysis. The stratified- random system of sampling was employed to randomly collect vegetation and soil samples from 46 quadra...

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