Study on Ecological Bag Protection Benefit of Highway Slope in Northeast China of Inner Mongolia

doi:10.13304/j.nykjdb.2024.0444

Journal of Agricultural Science and Technology ›› 2025, Vol. 27 ›› Issue (11): 195-204.DOI: 10.13304/j.nykjdb.2024.0444

• BIO-MANUFACTURING & RESOURCE AND ECOLOGY • Previous Articles

Study on Ecological Bag Protection Benefit of Highway Slope in Northeast China of Inner Mongolia

Yu ZHANG¹(), Long LI¹^,²(), Baohe LIU³^,⁴, Zhiming CAO¹, Pengfei LI⁵, Yanjiao WANG³, Ying WANG⁶, Ruishu ZHANG⁷

^1.School of Desert Management，Inner Mongolia Agricultural University，Hohhot 010018，China
^2.Key Laboratory of Desert Ecosystem Protection and Restoration，State Forestry Administration，School of Desert Management，Inner Mongolia Agricultural University，Hohhot 010000，China
^3.Inner Mongolia Transportation Design and Research Institute，Hohhot 010010，China
^4.Inner Mongolia Autonomous Region Engineering Surface Restoration and Road Ecosystem Construction Engineering Technology Research Center，Hohhot 010010，China
^5.Construction of National Highway 331 from Zero Point to Baogeda Mountain Section Management Office，Inner Mongolia Horqin 137499，China
^6.Ulanqab City Public Resources Trading Center，Inner Mongolia Ulanqab 012000，China
^7.Hohhot Highway Service Centre，Hohhot 010000，China

Received:2024-06-03 Accepted:2024-09-30 Online:2025-11-15 Published:2025-11-17
Contact: Long LI

内蒙古东北林草交错生态脆弱区的公路边坡生态袋防护效益研究

张宇¹(), 李龙¹^,²(), 刘宝河³^,⁴, 曹治明¹, 李鹏飞⁵, 王嫣娇³, 王颖⁶, 张睿姝⁷

^1.内蒙古农业大学沙漠治理学院，呼和浩特 010018
^2.内蒙古农业大学沙漠治理学院，国家林业局荒漠生态系统保护与修复重点实验室，呼和浩特 010000
^3.内蒙古交通设计研究院有限责任公司，呼和浩特 010010
^4.内蒙古自治区工程创面修复及路域生态系统建设工程技术研究中心，呼和浩特 010010
^5.国道331线零点至宝格达山段公路工程建设管理办公室，内蒙古科尔沁 137499
^6.乌兰察布市公共资源交易中心，内蒙古乌兰察布 012000
^7.呼和浩特市公路服务中心，呼和浩特 010010

通讯作者: 李龙
作者简介:张宇 E-mail：1311293543@qq.com；
基金资助:
内蒙古自治区交通运输厅建设科技项目(NJ-2018-31)

Abstract

Abstract:

The excavation of highway projects causes a large area of exposed rocky slopes which is the main cause of soil erosion. In order to explore the role played by eco-bags in ecological protection of highway slopes， the highway slopes in the ecologically fragile area of forest and grass interspersed in Northeast Inner Mongolia were selected as the research object， and a combination of field investigation and indoor experiment was adopted to analyse the soil， vegetation index and root characteristics of the eco-bags. The results showed that the effect of slope direction on soil physicochemical properties （except for bulk density and total nitrogen content） were negative>positive>control slopes， in which the total potassium content of the negative slopes varied most significantly， which was 18% and 26% higher than that of the positive slopes and control slopes， respectively； the slope direction was negative>positive>control slopes in terms of the height， cover and biomass of the plant plants， and the total length of the root system of the negative slope was 30% and 38% higher than that of the positive slope and control slope， respectively. The principal component analysis showed that the composite scores of shady slope， sunny slope and control slope reached 46.16，-13.00 and -33.15， respectively. Comparison between the original exposed rocky slope and the slope protected by eco-bags revealed that the soil nutrients and vegetation growth of slopes protected by eco-bags were better， while the ecological environment of the original ecological slopes was more fragile， and the ecological protection of exposed rocky slopes in the fragile areas should be strengthened. The ecological environment of the original slopes is more fragile. The results provided a theoretical basis for further investigation of the impact of ecological bags on highway slopes.

Key words: highway slope, slope direction, ecological bag, principal component analysis

摘要：

公路工程开挖造成较大面积的裸露岩石边坡是引起水土流失的主要原因。为探究生态袋在公路边坡生态防护中的作用，选取内蒙古东北林草交错生态脆弱区的公路边坡为研究对象，采取野外调查与室内试验相结合的方法分析生态袋的土壤、植被指数及根系特征。结果表明，坡向对土壤理化性质（容重、全氮含量除外）的影响均表现为阴坡>阳坡>对照边坡，其中，阴坡的全钾含量变化最显著，比阳坡、对照边坡分别高18%、26%；坡向对植物株高、盖度、生物量的影响均表现为阴坡>阳坡>对照边坡，阴坡的总根系长度比阳坡、对照边坡分别高30%、38%。主成分分析表明，阴坡、阳坡和对照边坡的主成分综合得分分别为46.16、-13.00、-33.15。原裸露岩石边坡与生态袋防护边坡对比发现，使用生态袋进行生态防护的边坡土壤养分及植被生长较好；而原生态边坡生态环境较脆弱，需加强对脆弱区裸露岩石边坡的生态保护力度。研究结果为进一步探究生态袋对公路边坡的影响提供理论依据。

关键词: 公路边坡, 坡向, 生态袋, 主成分分析

CLC Number:

S732

Yu ZHANG, Long LI, Baohe LIU, Zhiming CAO, Pengfei LI, Yanjiao WANG, Ying WANG, Ruishu ZHANG. Study on Ecological Bag Protection Benefit of Highway Slope in Northeast China of Inner Mongolia[J]. Journal of Agricultural Science and Technology, 2025, 27(11): 195-204.

张宇, 李龙, 刘宝河, 曹治明, 李鹏飞, 王嫣娇, 王颖, 张睿姝. 内蒙古东北林草交错生态脆弱区的公路边坡生态袋防护效益研究[J]. 中国农业科技导报, 2025, 27(11): 195-204.

Figures/Tables 8

Fig. 1 Physical properties of soil on different slopes under ecological bag treatment

Fig. 2 Soil chemical properties of different slopes under ecological bag treatmentNote： Different lowercase letters indicate significant differences between different slopes at P <0.05 level.

Fig. 3 Vegetation cover and biomass of different slopes under ecological bag treatmentNote： Different lowercase letters indicate significant differences between different slopes at P <0.05 level.

Fig. 4 Herbaceous species composition of different slopes under ecological bag treatment

Fig. 5 Herbaceous species diversity index of different slopes under ecological bag treatmentNote： Different lowercase letters indicate significant differences between different slopes at P <0.05 level.

Fig. 6 Vegetation roots of different slopes under ecological bag treatmentNote： Different lowercase letters indicate significant differences between different slopes at P <0.05 level.

Fig. 7 Correlation analysis of soil physicochemical properties， vegetation index and root characteristics of different slopesNote： *，** and *** indicate significant correlations at P<0.05，P<0.01 and P<0.001 levels， respectively.

Table 1 Principal component analysis and gross analysis of soil physical and chemical properties and vegetation index in different slope directions

坡向

Slope aspect

PC1得分

PC1 score

PC2得分

PC2 score

综合得分

Combined score

排名

Ranking

阴坡

Shady slope

4.74

0.55

46.16

阳坡

Sunny slope

-0.91

-1.25

-13.00

对照边坡

Comparison slope

-3.83

0.70

-33.15

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Study on Ecological Bag Protection Benefit of Highway Slope in Northeast China of Inner Mongolia

内蒙古东北林草交错生态脆弱区的公路边坡生态袋防护效益研究

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