Spatial Distribution of Organic Carbon and Available Nutrients in Grassland Soils and Analysis of the Main Controlling Factors

doi:10.11733/j.issn.1007-0435.2023.06.023

Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (6): 1798-1809.DOI: 10.11733/j.issn.1007-0435.2023.06.023

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Spatial Distribution of Organic Carbon and Available Nutrients in Grassland Soils and Analysis of the Main Controlling Factors

LI Xue-jie¹, CHEN Jie², CHANG Shuai^1,5, YU Hong-bo^1,3,4, ZHANG Li-hua^1,4,6, ZHANG Qiao-feng^1,4, LI Xiang¹

1. School of Geography Science, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China;
2. Inner Mongolia Radio and Television Station, Hohhot, Inner Mongolia 010000, China;
3. Provincial Key Laboratory of Mongolian Plateau's Climate System, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China;
4. Inner Mongolia Key Laboratory of Remote Sensing and Geographic Information Systems, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China;
5. Future School of Erdos City Kambashi District, Erdos, Inner Mongolia 017010, China;
6. College of Science, Shanghai Maritime University, Shanghai 201306, China

Received:2022-06-19 Revised:2023-03-28 Online:2023-06-15 Published:2023-06-30

草原土壤有机质和速效养分的空间分布及主控因子分析

李雪杰¹, 陈杰², 常帅^1,5, 于红博^1,3,4, 张丽华^1,4,6, 张巧凤^1,4, 李想¹

1. 内蒙古师范大学地理科学学院, 内蒙古呼和浩特 010022;
2. 内蒙古广播电视台, 内蒙古呼和浩特 010000;
3. 蒙古高原气候变化与区域响应自治区高等学校重点实验室, 内蒙古呼和浩特 010022;
4. 内蒙古自治区遥感与地理信息系统重点实验室, 内蒙古呼和浩特 010022;
5. 鄂尔多斯市康巴什区未来学校, 内蒙古鄂尔多斯 017010;
6. 上海海事大学理学院, 上海 201306

通讯作者: 于红博,E-mail:1106275721@qq.com
作者简介:李雪杰(2000-)，女，汉族，内蒙古通辽人，硕士研究生，主要从事土壤与生物地理学研究，E-mail：2744205864@qq.com
基金资助:
国家自然科学基金(No. 41961052)；内蒙古自然科学基金(No.2023MS04005,No.2021MS04015)；内蒙古人文社科重点项目(No.NJSZ23011);内蒙古师范大学项目(No.2021ZJSZ002)资助

Abstract

Abstract: The study of soil organic matter and nutrients is of great importance to the health and sustainable development of grassland ecosystems. In this paper,the global Moran index,kriging interpolation and geographic probes were used to investigate the spatial differentiation characteristics of soil organic matter and available nutrients in the depth of 0~50 cm soil layer and their influencing factors,using Xilingole grassland as the study area. The results showed that (1) the spatial distribution of soil organic matter and available nutrients in the study area were both moderately variable,with a spatial clustered distribution;(2) the horizontal spatial distribution of soil organic matter and available nutrients showed a gradual decrease from meadow grassland to desert grassland;(3) the average annual temperature is the main factor affecting the content of soil organic matter and available nutrients;(4) the interactions of 11 factors on soil organic matter and available nutrients were basically non-linear and two-factor synergistic. This study showed that the interaction between the influencing factors had a significant effect on the spatial distribution of soil organic matter and available nutrients.

Key words: Soil nutrients, Xilingole grassland, Geographic detector, Spatial distribution, Impact factor

摘要： 土壤有机质和养分的研究对于草原生态系统的健康和可持续发展具有重要意义。本文以锡林郭勒草原为研究区，利用全局莫兰指数、克里格插值法、地理探测器等方法，探究0 ~50 cm土层深度土壤有机质和速效养分的空间分异特征及其影响因子。结果表明：研究区土壤有机质和速效养分的空间分布均为中等程度变异，在空间分布上均具有集聚分布特点；土壤有机质和速效养分在水平空间分布上从草甸草原向荒漠草原呈现逐渐减少的变化趋势；年均气温是影响土壤有机质和速效养分含量的共同主要因子；11种影响因子对土壤有机质和速效养分的相互作用基本表现为非线性增强和双因子协同增强作用。本研究表明影响因子之间的交互作用对土壤有机质和速效养分的空间分布具有显著影响。

关键词: 土壤养分, 锡林郭勒草原, 地理探测器, 空间分布, 影响因子

CLC Number:

S158.5

LI Xue-jie, CHEN Jie, CHANG Shuai, YU Hong-bo, ZHANG Li-hua, ZHANG Qiao-feng, LI Xiang. Spatial Distribution of Organic Carbon and Available Nutrients in Grassland Soils and Analysis of the Main Controlling Factors[J]. Acta Agrestia Sinica, 2023, 31(6): 1798-1809.

李雪杰, 陈杰, 常帅, 于红博, 张丽华, 张巧凤, 李想. 草原土壤有机质和速效养分的空间分布及主控因子分析[J]. 草地学报, 2023, 31(6): 1798-1809.

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Spatial Distribution of Organic Carbon and Available Nutrients in Grassland Soils and Analysis of the Main Controlling Factors

草原土壤有机质和速效养分的空间分布及主控因子分析

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