Data · dataset · 2026
Soil Quality in Northeast China from 2000 to 2020
Listed in ScienceDB
To comprehensively analyze the soil quality of black land in Northeast China, a comprehensive assessment of land quality was conducted by considering four aspects: soil erosion degree, soil carbon storage change, surface vegetation coverage, and climatic conditions.
Description
Four indicators were selected: soil erosion modulus (wind + water erosion), net ecosystem exchange (NEE), vegetation coverage, and relative humidity index.
A Principal Component Analysis (PCA) was employed to construct a comprehensive land quality assessment model applicable to the entire Northeast China region. From the perspective of the entire Northeast China region, the average land quality index (LQI) ranges from 0.40 to 0.48, which is classified as a medium level. Areas with very poor and poor land quality are mainly distributed in the western parts of Xilingol League, Chifeng City, and Hulunbuir City in Inner Mongolia, the western parts of Liaoning and Jilin Provinces, and the southern parts of Heilongjiang Province.
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Conversely, areas with very good and good land quality are primarily located in the Daxing'anling region, Hulunbuir Grassland, Yanbian Korean Autonomous Prefecture, and Mudanjiang area. Figure 16 illustrates the variation characteristics of the proportion of land quality grades in Northeast China from 2000 to 2020. Overall, the proportion of poor grades has shown a decreasing trend, while the proportion of good grades has exhibited an increasing trend.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.iga.001bi ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Soil sciences 73%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.IGA.001bi | 7 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].anzsrc:group:4106 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (73%) |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/rights |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |