Effects of Film Mulching on Plant Growth and Nutrients in Artificial Soil: A Case Study on High Altitude Slopes

Xing Wang, Hailong Sun, Changming Tan, Xiaowen Wang and Min Xia
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Xing Wang: College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
Hailong Sun: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
Changming Tan: Sichuan Highway Planning, Survey, Design and Research Institute Ltd., Chengdu 610041, China
Xiaowen Wang: Sichuan Highway Planning, Survey, Design and Research Institute Ltd., Chengdu 610041, China
Min Xia: State Pipeline Network Group, Chongqing Natural Gas Pipeline Co., Ltd., Chongqing 404100, China

Sustainability, 2021, vol. 13, issue 19, 1-15

Abstract: Vegetation restoration on slopes is generally difficult, especially in high altitude areas since the environment has dramatically changing weather conditions that are not suitable for plant growth. In this study, the potential of film mulching for vegetation restoration in such environments and plant growth and nutrients in artificial soil on slopes in high altitude areas were determined. Experiments were carried out in Jiuzhaigou County, Sichuan Province, to determine plant growth and nutrients in artificial soil on slopes under six different coverage rates (40%, 50%, 60%, 70%, 80% and 90%). Results showed that in each observation period, plant height, ground diameter and contents of EN, EP and EK in the soil of the film mulching treatment were significantly higher than those of the control, while the number of plant individuals per unit area was significantly lower than that of the control. When the coverage rate was 90%, plant height, ground diameter, biomass and nutrient contents in the soil were all higher than those under the other five treatments. Overall, our study suggested that applying film mulching technology when performing vegetation restoration on slopes in high altitude areas is promising, since it can promote plant growth and preserve soil fertility.

Keywords: coverage rate; film mulching; high altitude areas; slope; plant; nutrients (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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