干旱区生态环境知识资源中心(Arid): Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions

Arid

DOI	10.36783/18069657rbcs20230024
	Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions
	Lima, Jose Alexsandro Guimaraes; Souza, Francisca Evelice Cardoso de; Silva, Francisca Gleiciane da; Terra, Fabricio da Silva; Freitas, Diana Ferreira de; Costa, Mirian Cristina Gomes; Toma, Raul Shiso
通讯作者	Toma, RS
来源期刊	REVISTA BRASILEIRA DE CIENCIA DO SOLO
ISSN	0100-0683
EISSN	1806-9657
出版年	2023
卷号	47
英文摘要	The rational exploitation of the land requires planning its agricultural use, which can be supported by the agricultural land suitability (ALS) assessment. The scheme to assess ALS proposed by Food Agricultural Organization (FAO) has been adopted in Brazil based on guiding charts for subtropical, humid tropical and semi-arid tropical climate. However, the guiding chart used for the semi-arid region has dramatically limited the ALS in drylands on which rainfed agriculture has been practiced. In this study, an adequation for the ALS assessment regarding the edaphoclimatic conditions of semi-arid region was proposed to improve the representation of agricultural areas and to allow a better planning of soil conservation practices. The ALS of the south region of Ceara State (Brazil) was assessed according to the FAO scheme and its initial adaptation to the Brazilian conditions; subsequently, this assessment was obtained by two adequations. Adequation I disregarded the limiting factor of water availability, while adequation II, besides disregarding the factor of water availability, established new limits for the classes of effective soil depth. The adequations resulted in an increase of 177.19 % in the areas with regular suitability for crops to the detriment of areas with restricted suitability for crops and areas with suitability only for pasture or grazing lands. The adequations increased the agricultural suitability in 41.26 % of the area of the mapping units, and 16.77 % of them were due to the modifications related to the effective soil depth, while the other 26.35 % were due to the changes related to water availability. The results related to water availability were equivalent to those observed through the dynamic analysis of land-use and cover associated with the rainfall, which demonstrated an increase in the areas for rainfed agriculture and a reduction in fallow and pasture areas in the years with rainfall within the climatic normality. The areas considered suitable for crop production with the adequation of the scheme may be included in soil conservation programs.
英文关键词	technical land classification rock fragments effective soil depth water deficit
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001076170500001
WOS关键词	USE EFFICIENCY ; SOIL-MOISTURE ; WATER ; TILLAGE ; BARLEY ; CROPS ; YIELD ; INTEGRATION ; MANAGEMENT ; NORTHEAST
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398378
推荐引用方式 GB/T 7714	Lima, Jose Alexsandro Guimaraes,Souza, Francisca Evelice Cardoso de,Silva, Francisca Gleiciane da,et al. Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions[J],2023,47.
APA	Lima, Jose Alexsandro Guimaraes.,Souza, Francisca Evelice Cardoso de.,Silva, Francisca Gleiciane da.,Terra, Fabricio da Silva.,Freitas, Diana Ferreira de.,...&Toma, Raul Shiso.(2023).Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions.REVISTA BRASILEIRA DE CIENCIA DO SOLO,47.
MLA	Lima, Jose Alexsandro Guimaraes,et al."Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions".REVISTA BRASILEIRA DE CIENCIA DO SOLO 47(2023).