Preliminary Study to Determine the Key Limiting Indicator of Cropland Soil Quality on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Gong, Dianqing1,2; Wang, Zhaofeng1,2; Zhang, Yili1,2; Wei, Bo1,2; Zhang, Binghua1,2; Hu, Xiaoyang1,2; Deng, Min1,2; Gu, Changjun3 |
| 刊名 | AGRICULTURE-BASEL
 |
| 出版日期 | 2025-06-09 |
| 卷号 | 15期号:12页码:1252 |
| 关键词 | soil quality index soil organic matter influencing factors structural equation model Tibetan Plateau |
| DOI | 10.3390/agriculture15121252 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Assessing cropland soil quality and identifying limiting indicators are crucial in guiding sustainable agricultural practices, particularly in fragile agricultural ecosystems. However, a unified understanding of key limiting indicators and the controlling factors of soil quality remains lacking due to the dual demands of environmental protection and agricultural production. To address this gap, 621 soil samples were collected across the One River and Its Two Tributaries agricultural region on the Tibetan Plateau. Twenty-four soil physicochemical indicators and eight environmental parameters were analyzed to evaluate soil quality and identify the key limiting factors. Meanwhile, the random forest model, correlation analysis, and the structural equation model were used to determine the factors influencing limiting indicator. The results showed that (1) croplands had a mean soil quality index (SQI) of 0.66 with obvious spatial heterogeneity, where eastern, northern, and southern regions exhibited higher SQI values than western and central valley areas. (2) Soil organic matter (SOM) was identified as the primary limiting indicator, with its limiting degree increasing with soil depth. (3) Total nitrogen is the strongest statistical predictor of SOM content in this region, while soil pH negatively impacted SOM. Environmental factors, including fertilizer amount, altitude, and normalized difference vegetation index, positively influenced SOM, whereas temperature and precipitation negatively affected it. (4) The structural equation model revealed effective intervention pathways for addressing SOM deficiency, highlighting targeted measures such as optimizing nitrogen management and increasing organic fertilizer application, particularly in relative lower-altitude areas. This study provides a unified perspective for managing soil quality and offers a potentially replicable framework for similar alpine ecosystems worldwide. |
| URL标识 | 查看原文 |
| WOS关键词 | ORGANIC-CARBON ; MANAGEMENT ; PATTERNS ; HEALTH |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001515135700001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214620]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Zhaofeng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Minist Emergency Management, Natl Disaster Reduct Ctr, Beijing 100124, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Dianqing,Wang, Zhaofeng,Zhang, Yili,et al. Preliminary Study to Determine the Key Limiting Indicator of Cropland Soil Quality on the Tibetan Plateau[J]. AGRICULTURE-BASEL,2025,15(12):1252. |
| APA | Gong, Dianqing.,Wang, Zhaofeng.,Zhang, Yili.,Wei, Bo.,Zhang, Binghua.,...&Gu, Changjun.(2025).Preliminary Study to Determine the Key Limiting Indicator of Cropland Soil Quality on the Tibetan Plateau.AGRICULTURE-BASEL,15(12),1252. |
| MLA | Gong, Dianqing,et al."Preliminary Study to Determine the Key Limiting Indicator of Cropland Soil Quality on the Tibetan Plateau".AGRICULTURE-BASEL 15.12(2025):1252. |
入库方式： OAI收割
来源：地理科学与资源研究所
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