|Table of Contents|

Soil Characteristics of Russian Olive and Caragana Mixed Forests With Different Degradation Degrees in the Lower Reaches of the Shiyang River

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年4
Page:
93-100
Research Field:
Publishing date:

Info

Title:
Soil Characteristics of Russian Olive and Caragana Mixed Forests With Different Degradation Degrees in the Lower Reaches of the Shiyang River
Author(s):
WANG Ding1; WANG Zixuan2; NIU Huihui1; FENG Yonglin3; LIU Xuelu1; CHU Run1
(1.College of Resources and Environment，Gansu Agricultural University，Lanzhou，Gansu 730070;2.Gansu Desert Control Research Institute,Lanzhou,Gansu 730071;3.Gansu Nonferrous Engineering Survey and Design Research Co.Ltd.,Lanzhou,Gansu 730030)
Keywords:
lower reaches of the Shiyang river; degradation degrees; mixed forest of russian olive and caragana
PACS:
S718.5
DOI:
10.11937/bfyy.20252197
Abstract:
Taking the mixed forest of Jujube and Caragana in the lower reaches of Shiyang River in Minqin county,Wuwei city,Gansu Province as the research object,field investigation and indoor analysis methods were adopted to study the variation laws of soil physical and chemical properties of the mixed forest of jujube and caragana under different degrees of degradation,in order to provide reference for local vegetation restoration and soil improvement.The results showed that with increasing degradation severity，the total nitrogen and available potassium contents in each soil layer (0-2,2-5,5-10 cm) significantly decreased.Compared with light degradation，the total nitrogen content in moderate and severe degradation decreased by 14.91% to 98.51%，and the available potassium content decreased by 35.89% to 85.71% in each soil layer.The available phosphorus content in the soil significantly decreased with the intensification of degradation in the 0-2 cm and 5-10 cm layers，with moderate and severe degradation reducing available phosphorus content by 23.56% to 66.67% compared to light degradation.As degradation intensified，the soil organic carbon content significantly decreased in the 0-2 cm layer；soil pH significantly increased in the 5-10 cm layer，while changes in total potassium content were not significant.Besides，at different levels of degradation，soil organic carbon and available phosphorus content significantly decreased with increasing soil depth，while soil pH significantly increased with increasing soil depth.The content of total phosphorus and total potassium in the soil did not change significantly with increasing soil depth.The content of total nitrogen in the soil significantly decreased with increasing soil depth in light，moderate，and severe russian olive and caragana mixed forests.Overall，different levels of degradation have a greater impact on readily available nutrients，while causing less interference with total potassium in the soil.

References:

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Last Update: 2026-03-12