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A comprehensive, locally adapted soil quality indexing under different land uses in a typical watershed of the eastern Qinghai-Tibet Plateau
Zhao, Xiaohong1; Tong, Miaomiao1,2; He, Yuejun3; Han, Xiuru3; Wang, Lingqing2
2021-06-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume125Pages:9
Corresponding AuthorWang, Lingqing(wanglq@igsnrr.ac.cn)
AbstractModern human activities have resulted in the indiscriminate exploitation of land resources, which has exerted increasingly negative influences on soil quality. Critically, these effects are seen in already ecologically fragile areas. In this study, a total of 48 soil samples were obtained at 0?20 cm depth (surface soil) and 20?40 cm depth (subsurface soil) from five types of land uses in a typical watershed in northwest China, Qinghai-Tibet Plateau. A comprehensive fuzzy mathematical model combined with soil quality index (SQI) was used to evaluate and calculate soil quality in the study area. Results showed that the SQI value was highest in mountain cropland, with values of 0.520 and 0.421 for surface and subsurface areas, respectively. Comparatively, values were lowest in grassland, with 0.447 and 0.364 for surface and subsurface areas, respectively. Then we assessed the sensitivity index (SI) to understand the effects of different physicochemical soil properties on soil quality under different land use types, and the SI values of mountain cropland and grassland with a large variations of soil quality were analyzed. Results showed that among the 15 evaluating indices, SI values for alkali-hydrolyzed nitrogen (AN), available phosphorus (AP), and total nitrogen (TN) in the surface soil layer meanwhile AN and TN in subsurface soil were higher than 1.5, indicating the sensitivity of these properties increased in mountain cropland. Surface soil is more vulnerable to land use changes driven by a variety of human activities, given this, surface and subsurface soil samples had recognizable differences. We next calculated the stratification ratio (SR), with results showing that SR values for most soil properties were higher in mountain cropland relative to grassland soil, with AP in mountain cropland was a maximum at 1.94, indicating these properties were more important indicators of the effects of land use changes. These analyses, provide a better explanation of why the soil quality was better in mountain cropland with specific physical and chemical properties. Collectively, the outcomes of this study indicated the potential for assessing soil quality covered by five land use types along with soil stratifications in a region with a sensitive and fragile ecological environment.
KeywordFuzzy mathematical model Soil quality index Land use types Sensitivity index Stratification ratio
DOI10.1016/j.ecolind.2021.107445
WOS KeywordMINIMUM DATA SET ; AGRICULTURAL PRODUCTION ; HEAVY-METALS ; DEGRADATION ; CHINA ; INDICATOR ; PROVINCE ; FORESTS ; COVER ; AREAS
Indexed BySCI
Language英语
Funding ProjectMajor Science and Technology Projects of Qinghai Province[2018-SF-A4] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK1003]
Funding OrganizationMajor Science and Technology Projects of Qinghai Province ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000639292000003
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/161589
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Lingqing
Affiliation1.Changan Univ, Sch Civil Engn, Xian 710061, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
3.North China Inst Aerosp Engn, Langfang 065000, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Xiaohong,Tong, Miaomiao,He, Yuejun,et al. A comprehensive, locally adapted soil quality indexing under different land uses in a typical watershed of the eastern Qinghai-Tibet Plateau[J]. ECOLOGICAL INDICATORS,2021,125:9.
APA Zhao, Xiaohong,Tong, Miaomiao,He, Yuejun,Han, Xiuru,&Wang, Lingqing.(2021).A comprehensive, locally adapted soil quality indexing under different land uses in a typical watershed of the eastern Qinghai-Tibet Plateau.ECOLOGICAL INDICATORS,125,9.
MLA Zhao, Xiaohong,et al."A comprehensive, locally adapted soil quality indexing under different land uses in a typical watershed of the eastern Qinghai-Tibet Plateau".ECOLOGICAL INDICATORS 125(2021):9.
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