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Fractional vegetation cover (FVC) is widely relevant for land surface process. In this paper, an algorithm is addressed on FVC retrieval, with the combination of MODIS and Huan Jing satellite (HJ), which is a newly launched constellation by China. In the developed model, we considered angular effect and utilized spatial and temporal information to a great extent. MODIS and HJ surface reflectance products...
Plant growth and microbial change in iron mine tailings were detected under controlled conditions in laboratory. Three crops, soybean, corn and grain sorghum, were used in the experiment for testing the adaptation of three crops on iron mine tailings. Cow manure vermicompost (25%, V:V) was added into iron mine tailings for improve the poor fertility of mine tailings. The results showed that corn and...
With world population growth, the demand for food, vegetable and so on is increasing. However, arable land area cannot expand. Moreover it would decrease owing to land use change with socio-economic development. Especially in China that is the most populated country in the world, while its cultivated land area could not match with the population, farmland is gradually declining with urbanization progress...
An experiment was conducted under hydroponic culture conditions to determine effects of nitrogen (N), phosphorus (P) and sulfur (S) deficiency on Tagetes erecta L. growth, cadmium (Cd) accumulation and chemical forms. Seedlings of similar age and size were pre-cultured in either N-, P-, or S-deficient nutrition solution for 12 days before exposure to 0.1 mg Cd L-1 (nonphytotoxic). The control group...
Vegetation ecosystem simulation, at the landscape or crop level, is a challenging topic involving multidisciplinary aspects. Several models of biophysical components must be coupled properly in order to obtain a meaningful simulation. This also raises interesting problems in software architecture. In this paper, we first outline a synchronisation formalism and software architecture adapted to the...
To investigate the phytotoxicity and tolerance responses of radish (Raphanus sativus L.) to Lead (Pb), plants of two genotypes were exposed to various concentrations of Pb (0, 100, 400 and 800 mg L-1) for up to 8 days by hydroponics culture. The plant growth was inhibited under Pb stress, with the decrease of root length, fresh and dry weights. Excess Pb induced MDA contents increasing significantly...
Normalized difference vegetation index (NDVI) from the moderate resolution imaging spectroradiometer (MODIS) data aboard Terra satellite reflect plant growth. However due to cloud masks, there is a great need to apply Aqua data as a complement for Terra data. Therefore, the relationships between Terra-derived and Aqua-derived NDVI values are required to continued long-term monitoring of land surface...
Early models for paddy fields consist of a single-layered medium in which coherent effects within clusters of leaves are considered but multiple volume scattering is not. In this paper, the paddy canopy is modeled as a multilayered dense discrete random medium consisting of cylindrical and needle-shaped scatterers. Consideration is given to the coherent and near-field effects of the closely spaced...
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