Next Article in Journal
The Impact of the Low-Carbon City Pilot Policy on Energy Intensity: Evidence from a Staggered Difference-in-Differences Design
Previous Article in Journal
Prospective Carbon Sequestration Assessment of National Reserve Forest Restoration Using Biomass Expansion Factor-Based Accounting
Previous Article in Special Issue
Hidden Carbon: How Polymers Influence Soil Organic Matter and Carbon Cycling
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Land
Volume 15
Issue 6
10.3390/land15060912
land-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Integrated Assessment of Soil Environmental Capacity for Heavy Metals in a Selenium-Rich Geological Agricultural Region: A Novel Framework Combining Source Apportionment and Dynamic Modeling

by
Daokun Chen
1,
Dongxiang Jiang
1,
Liang Wang
1,
Xinbin Li
1,2,
Boyuan Chen
1,
Zhanbin Wang
1,* and
Ke Yang
1,*
1
Xi’an Mineral Resources Survey, China Geological Survey, Xi’an 710100, China
2
Qinling—Loess Plateau Transition Zone Observation and Research Station for Coupling of Soil and Water Elements and Conservation of Biological Resources, Weinan 714000, China
*
Authors to whom correspondence should be addressed.
Land 2026, 15(6), 912; https://doi.org/10.3390/land15060912
Submission received: 30 March 2026 / Revised: 9 May 2026 / Accepted: 20 May 2026 / Published: 25 May 2026
(This article belongs to the Special Issue Soil Contamination—Ecological Environment Risk Assessment and Remediation: 2nd Edition)
Versions Notes

Abstract

Addressing capacity assessment uncertainties in high-geological-background areas, this study develops a source-oriented risk assessment framework integrating spatial interpolation, source apportionment, and dynamic capacity modeling. Analysis of 39 surface soil samples (As, Cr, Ni, Cu, Zn, Cd, Pb, Se, pH) from ankang basin, China, reveals: Two heavy metal sources were quantitatively identified via APCS-MLR. Natural sources (71.94%) dominate, contributing Se, Cd, Cu, Zn, and Ni, with Cd primarily geogenic. Anthropogenic sources (28.06%) from industrial, transportation, and agricultural activities contribute Cr, As, Pb, and Ni. Static capacity assessment identifies Cd as the primary limiting element (average capacity 0.22). Dynamic model predictions indicate that the 20-year dynamic capacity of all elements is only 14–20% of the theoretical static capacity (Qi), representing 16–47% of the current existing capacity, and will approach dynamic equilibrium after 40 years. Source-oriented capacity indices reveal natural sources pose the highest comprehensive risk (SPI = 0.916), mainly driving Cd capacity stress (SPICd = 0.34). Anthropogenic sources remain safe (SPI > 1.255) but warrant Pb monitoring. This framework supports precise management of selenium-rich lands, shifting strategies from emission control to avoiding high-risk geological units.
Keywords: soil heavy metals; selenium-enriched geological background; soil environmental capacity; source apportionment soil heavy metals; selenium-enriched geological background; soil environmental capacity; source apportionment

Share and Cite

MDPI and ACS Style

Chen, D.; Jiang, D.; Wang, L.; Li, X.; Chen, B.; Wang, Z.; Yang, K. Integrated Assessment of Soil Environmental Capacity for Heavy Metals in a Selenium-Rich Geological Agricultural Region: A Novel Framework Combining Source Apportionment and Dynamic Modeling. Land 2026, 15, 912. https://doi.org/10.3390/land15060912

AMA Style

Chen D, Jiang D, Wang L, Li X, Chen B, Wang Z, Yang K. Integrated Assessment of Soil Environmental Capacity for Heavy Metals in a Selenium-Rich Geological Agricultural Region: A Novel Framework Combining Source Apportionment and Dynamic Modeling. Land. 2026; 15(6):912. https://doi.org/10.3390/land15060912

Chicago/Turabian Style

Chen, Daokun, Dongxiang Jiang, Liang Wang, Xinbin Li, Boyuan Chen, Zhanbin Wang, and Ke Yang. 2026. "Integrated Assessment of Soil Environmental Capacity for Heavy Metals in a Selenium-Rich Geological Agricultural Region: A Novel Framework Combining Source Apportionment and Dynamic Modeling" Land 15, no. 6: 912. https://doi.org/10.3390/land15060912

APA Style

Chen, D., Jiang, D., Wang, L., Li, X., Chen, B., Wang, Z., & Yang, K. (2026). Integrated Assessment of Soil Environmental Capacity for Heavy Metals in a Selenium-Rich Geological Agricultural Region: A Novel Framework Combining Source Apportionment and Dynamic Modeling. Land, 15(6), 912. https://doi.org/10.3390/land15060912

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop