[Spatial variation of soil properties and quality evaluation for arable Ustic Cambosols in central Henan Province].
Ying Yong Sheng Tai Xue Bao
; 22(1): 121-8, 2011 Jan.
Article
em Zh
| MEDLINE
| ID: mdl-21548298
ABSTRACT
A GIS-based 500 m x 500 m soil sampling point arrangement was set on 248 points at Wenshu Town of Yuzhou County in central Henan Province, where the typical Ustic Cambosols locates. By using soil digital data, the spatial database was established, from which, all the needed latitude and longitude data of the sampling points were produced for the field GPS guide. Soil samples (0-20 cm) were collected from 202 points, of which, bulk density measurement were conducted for randomly selected 34 points, and the ten soil property items used as the factors for soil quality assessment, including organic matter, available K, available P, pH, total N, total P, soil texture, cation exchange capacity (CEC), slowly available K, and bulk density, were analyzed for the other points. The soil property items were checked by statistic tools, and then, classified with standard criteria at home and abroad. The factor weight was given by analytic hierarchy process (AHP) method, and the spatial variation of the major 10 soil properties as well as the soil quality classes and their occupied areas were worked out by Kriging interpolation maps. The results showed that the arable Ustic Cambosols in study area was of good quality soil, over 95% of which ranked in good and medium classes and only less than 5% were in poor class.
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Eixos temáticos:
Pesquisa_clinica
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Ecossistema
/
Produtos Agrícolas
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
País como assunto:
Asia
Idioma:
Zh
Ano de publicação:
2011
Tipo de documento:
Article