济源市南山林场不同林分类型土壤主要肥力指标评价

doi:10.11720/wtyht.2024.1570

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Abstract

Soil fertility is a significant indicator that measures the ability of soil to provide various nutrients required by vegetation and reflects the crop producing power of soil. To ascertain the soil fertility of different forest stand types in the Nanshan forest farm of Jiyuan City, this study investigated the soil of four forest stand types: Platycladus orientalis, Robinia pseudoacacia, Quercus variabilis, and walnut trees. It analyzed the soil nutrients of the forest stand types by determining the pH, organic matter, total nutrients (TN,TP,TK), and available nutrients (AN,AP,AK) of soil at different depths (0~40 cm). Moreover, it assessed the comprehensive soil fertility using the improved Nemerow comprehensive index method. The results show that: (1) Except pH, the physicochemical factors of the soil of the forest stand types in the study area exhibited moderate variations, and the soil TP, TK, AP, AK, and pH manifested significant differences; (2) With an increase in soil depth, the soil in the study area showed increased pH and bulk density, decreased organic matter, TN, and available nutrients, and almost unchanged TP and TK; (3) The assessment of soil nutrient abundance indicated that the TN, TP, and available nutrients were relatively poor in the soil of the study area; (4) Based on a comprehensive assessment, the soil fertility of four forest stand types at different depths decreased in the order of Robinia pseudoacacia, Quercus variabilis, Platycladus orientalis, and walnut trees. Their soil fertility was generally at an average level, with low values observed at depths ranging from 20 to 40 cm. The comprehensive analysis indicates that TN, TP, and available nutrients are deficient in the study area. Therefore, applying appropriate organic fertilizers, nitrogen, and phosphorus is recommended for the study area.

Key words： Nanshan forest farm forest stand type soil nutrient soil fertility

Received: 25 December 2023 Published: 21 October 2024

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	Articles by authors
	Yong-Feng WANG
	Jian WANG
	Guo-Tao PANG
	Wei-Ping ZHU
	Ke-Chao WANG
	Xiao-En WANG
	Zu-Zhen WANG
	Jie LIU

Cite this article:

Yong-Feng WANG,Jian WANG,Guo-Tao PANG, et al. Assessment of primary soil fertility indicators of different forest stand types in the Nanshan forest farm in Jiyuan City[J]. Geophysical and Geochemical Exploration, 2024, 48(5): 1400-1408.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2024.1570 OR https://www.wutanyuhuatan.com/EN/Y2024/V48/I5/1400

Location and sample distribution map of the research area

Classification standard of soil nutrient content

Classification standards of soil attributes

Statistics of soil nutrients, bulk density and pH in the study area

Soil physical and chemical characteristics of different stand types

Results of variance analysis of soil physical and chemical indicators

Statistics of the proportion of soil nutrient classification in the study area %

Comprehensive evaluation of soil fertility

Soil nutrient abundance and ridge status of different stands

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