| Characteristics of soil temperature change under plastic membrane\|geotextile cloth mulching in Mu Us Desert land |
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| DOI：10.7606/j.issn.1000-7601.2020.01.25 |
| Key Words: plastic membrane + geotextile ground cover soil temperature change Mu Us desert |
| Author Name | Affiliation | | REN Tao | School of Water and Environment, Chang’an University, Xi’an, Shaanxi 710054, China
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University, Xi’an, Shaanxi 710054, China | | JIA Zhifeng | School of Water and Environment, Chang’an University, Xi’an, Shaanxi 710054, China
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University, Xi’an, Shaanxi 710054, China
Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China | | WANG Zhi | School of Water and Environment, Chang’an University, Xi’an, Shaanxi 710054, China
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University, Xi’an, Shaanxi 710054, China
Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China
College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100， China
Department of Earth and Environmental Sciences, California State University, Fresno, California 93740, USA | | LU Yudong | School of Water and Environment, Chang’an University, Xi’an, Shaanxi 710054, China
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University, Xi’an, Shaanxi 710054, China
Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China | | LIU Xiuhua | School of Water and Environment, Chang’an University, Xi’an, Shaanxi 710054, China
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University, Xi’an, Shaanxi 710054, China
Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China | | ZHONG Zhe | School of Water and Environment, Chang’an University, Xi’an, Shaanxi 710054, China
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University, Xi’an, Shaanxi 710054, China |
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| Abstract: |
| In order to study the effect of combined mulching mode using plastic membrane and geotextile cloth on soil temperature in the Mu Us Desert, this experiment selected a site in the east edge of Mu Us Desert sand belt, had three treatments including plastic membrane plus weed\|blocking geotextile ground cover (MB), weed\|blocking geotextile cover (DB), and bare ground control (CK) in three groups, and carried out a one\|year in\|situ monitoring of shallow soil temperature, so as to compare the influence of different cover types on soil temperature variation. Results showed that the MB cover resulted in higher average annual temperatures, 0.5℃, 0.6℃, and 0.5℃ higher, at 5, 15, and 30 cm of soil depths, respectively, than that under the DB cover, which was 1.0, 0.8, and 1.0℃ higher than the CK condition. At the same depth, the length of the freezing\|thawing period was longest for CK, intermediate for DB, and shortest for the MB. There was a significant difference in soil temperature between the three treatments at the same depth (P<0.05), and the soil temperature conservation effect was the best under MB; At 5, 15 cm and 30 cm soil depths, the accumulated, no less than 5℃, soil temperature under MB is respectively 4%, 4%, and 3% higher than that of DB, which was respectively 8%, 7%, and 9% higher than that under CK; Before, during, and after a rainfall event, the daily range of soil temperature at the same depth was the largest in MB, followed by DB, and the smallest with CK. The near\|surface air temperature and soil temperature were positively correlated. At the same depth, the correlation was greater under mulching conditions than that of the bare surface condition. This experiment showed that there was an obvious heat conservation effect under the plastic membrane and geotextile ground cover conditions, which were suitable for plant growth and provided reference for developing vegetation restoration technologies in this area. |
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