预测巴西塞拉多地区土壤保水的土壤传递函数

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pesquisa Agropecuaria Brasileira Pub Date : 2022-01-01 DOI:10.1590/s1678-3921.pab2022.v57.02474
Rafael de Andrade Carvalho Rosseti, R. Amorim, L. A. D. L. D. Raimo, G. N. Torres, L. Silva, Ianna Marília Alves
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引用次数: 0

摘要

摘要:本研究的目的是确定土壤转移函数,以预测巴西马托格罗索州南部塞拉多地区土壤在-33和-1500 kPa基质电位下的保水能力。收集样本(n=156)进行模型校正(n=124)和验证(n=32)。采用逐步多元回归确定土壤传递函数。使用Willmott的一致性指数、均方根误差、Pearson的相关系数和置信度指数来评价函数的性能,并与文献中描述的函数进行比较。最有效的保水性变量是:微孔隙度、总砂和粘土在-33 kPa;-1500 kPa时砂、粉、粘土总量。区域土壤转移函数解释了94%以上的土壤保水变化。在-33 kPa时,使用结构特性微孔隙度,在-1500 kPa时,使用粒度参数,函数预测保水性的可靠性增加。研究的区域土壤转移函数比文献中描述的函数更能预测马托格罗索州南部塞拉多地区-33和-1500 kPa基质电位下土壤的保水能力。
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Pedotransfer functions for predicting soil-water retention under Brazilian Cerrado
Abstract The objective of this work was to determine pedotransfer functions to predict water retention at the -33 and -1500 kPa matric potentials of soils under Cerrado, in the south of the state of Mato Grosso, Brazil. Samples (n=156) were collected for model calibration (n=124) and validation (n=32). A stepwise multiple regression was used to determine pedotransfer functions. Willmott’s index of agreement, root-mean-square error, Pearson’s correlation coefficient, and the confidence index were used to evaluate the performance of the functions and to compare them with those described in the literature. The most efficient variables to estimate water retention were: microporosity, total sand, and clay at -33 kPa; and total sand, silt and clay at -1500 kPa. The regional pedotransfer functions explained more than 94% of water retention variance in the studied soils. The reliability of the functions to predict water retention increased, at -33 kPa, with the use of the structural property microporosity and, at -1500 kPa, with the use of granulometric parameters. The studied regional pedotransfer functions predict water retention at the -33 and -1500 kPa matric potentials of soils under Cerrado, in southern Mato Grosso, better than the functions described in the literature.
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来源期刊
Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuaria Brasileira 农林科学-农业综合
CiteScore
1.20
自引率
0.00%
发文量
45
审稿时长
9-18 weeks
期刊介绍: Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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