Soil Physical-chemical Properties of Loess Hilly Area in Central Gansu under Different Ecological Restoration Measures

doi:10.11733/j.issn.1007-0435.2026.04.015

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (4): 1302-1312.DOI: 10.11733/j.issn.1007-0435.2026.04.015

Soil Physical-chemical Properties of Loess Hilly Area in Central Gansu under Different Ecological Restoration Measures

LI Jia^1,2, ZHANG Ning^1,2, ZHU Niu³, ZHANG Lin⁴, SU Xing⁵, WANG Jin-niu^1,2

1. Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, Sichuan Province 610041, China;
2. Mangkang Biodiversity and Ecological Station, Tibet Ecological Safety Monitor Network, Changdu, Xizang 854000, China;
3. College of Pratacultural Science, Gansu Agricultural University, Lanzhou, Gansu 730070, China;
4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;
5. Institute of Geological Hazards Prevention, Gansu Academy of Sciences, Lanzhou, Gansu Province 730000, China

Received:2025-05-29 Revised:2025-11-11 Published:2026-04-15

陇中黄土丘陵区滑坡体在不同生态恢复措施下的土壤特征

李佳^1,2, 张宁^1,2, 朱牛³, 张林⁴, 宿星⁵, 王金牛^1,2

1. 中国科学院成都生物研究所, 四川成都 610041;
2. 西藏生态安全屏障监测站网芒康生物多样性与生态站, 西藏昌都 854500;
3. 甘肃农业大学草业学院, 甘肃兰州 730070;
4. 中国科学院青藏高原研究所, 北京 100101;
5. 甘肃省科学院地质自然灾害防治研究所, 甘肃兰州 730000

通讯作者: 王金牛，E-mail：wangjn@cib.ac.cn
作者简介:李佳（2000-），女，汉族，四川宜宾人，硕士研究生，主要从事退化生态系统修复与土壤动物群落变化研究，E-mail：2503978048@qq.com；
基金资助:
甘肃省科学院应用研发项目（2021JK-08） “黄河上游陇中地区滑坡灾损土地优化利用评价及生态修复研究”；中国科学院西部之光西部青年学者项目（2021XBZG-XBQNXZ-A-007）资助

Abstract

Abstract: The mechanism of the influence of vegetation restoration on soil characteristics in the loess hilly landslide area is unclear， in this study we selected the typical landslide area in the loess hilly and gully region of central Gansu in the upper reaches of the Yellow River as the experimental site. Through field sampling and indoor analysis， combined with fractal theory， the differences in soil particle size characteristics and physical and chemical properties under three ecological restoration measures， namely natural restoration， honeysuckle planting， and corn planting， were compared. The results showed that：（1） Under different ecological restoration measures， the composition of soil particles was mainly composed of sand grains （34%~37%）， fine sand grains （27%-28%）. （2） Compared with natural restoration， the pH in the honeysuckle area decreased significantly， and the moisture content in the corn area increased significantly. The contents of soil organic matter， total nitrogen and total phosphorus in artificial restoration were all higher than those in natural restoration. （3） The range of the single fractal dimension was 2.44 to 2.72， specifically corn （2.72）> honeysuckle （2.65）> natural recovery （2.44）， and the recovery of corn leads to better soil quality. Under different ecological restorations， the single fractal dimension of soil showed an increasing trend as the soil texture changes from coarse to fine. The nutrient content and moisture content of soil restored artificially were higher than those restored naturally， that was， artificial restoration measures were more conducive to enhancing the soil's water retention capacity and nutrient fixation capacity. The study shows that in the process of landslide control， appropriately adopting auxiliary measures of artificial restoration can effectively improve soil structure， increase vegetation coverage of the landslide site， and reduce soil erosion.

Key words: Ecological restoration measures, Soil physicochemical properties, Particle size distribution, Fractal dimension, Landslides

摘要： 黄土丘陵滑坡迹地植被恢复对土壤特征的影响机制尚不明确，本研究选取黄河上游陇中黄土丘陵沟壑区典型滑坡区域为试验样地，通过野外采样与室内分析，结合分形理论，对比自然恢复、金银花种植、玉米种植3种生态恢复措施下土壤粒径特征及理化性质差异。结果表明：（1）不同生态恢复措施下土壤颗粒组成主要以砂粒（34%~37%），细砂粒（27%~28%）为主；（2）与自然恢复相比，金银花区pH显著下降，玉米区含水率显著升高，人工恢复土壤有机质、全氮、全磷含量均高于自然恢复；（3）单重分形维数范围2.44~2.72，具体为玉米（2.72）>金银花（2.65）>自然恢复（2.44），玉米恢复使得土壤质量更好。不同生态恢复下土壤单重分形维数随土壤质地由粗变细，土壤单重分形维数呈增加趋势。人工恢复的土壤养分含量、土壤含水率高于自然恢复，即人工恢复措施更有利于提升土壤保水能力与养分固定能力。因此，在滑坡治理过程中，适当采取人工恢复的辅助措施能有效改善土壤结构、提升滑坡迹地的植被盖度、减少水土流失。

关键词: 生态恢复措施, 土壤理化性质, 粒径分布, 单重分形维数, 滑坡

CLC Number:

S154.1

LI Jia, ZHANG Ning, ZHU Niu, ZHANG Lin, SU Xing, WANG Jin-niu. Soil Physical-chemical Properties of Loess Hilly Area in Central Gansu under Different Ecological Restoration Measures[J]. Acta Agrestia Sinica, 2026, 34(4): 1302-1312.

李佳, 张宁, 朱牛, 张林, 宿星, 王金牛. 陇中黄土丘陵区滑坡体在不同生态恢复措施下的土壤特征[J]. 草地学报, 2026, 34(4): 1302-1312.

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Soil Physical-chemical Properties of Loess Hilly Area in Central Gansu under Different Ecological Restoration Measures

陇中黄土丘陵区滑坡体在不同生态恢复措施下的土壤特征

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