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| DOI：10.13522/j.cnki.ggps.2022675 |
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| Soil Moisture and Growth Dynamics of Prunus Mongolica in the Helan Mountain under Artificial Rain-collecting |
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LYU Yingze, ZHAO Hongliang, YAN Peixuan, ZHANG Haiying,
LI Jia, LI Jingyao, SHAO Leilei, WANG Fang, NI Xilu
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1. School of Agriculture, Ningxia University, Yinchuan 750021, China; 2. Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecology and Environment, Ningxia University,
Yinchuan 750021, China; 3. Ningxia Helan Mountain Forest Ecosystem Research Station, State Forestry Administration,
Yinchuan 750021, China; 4. School of Geographical Science and Planning, Ningxia University, Yinchuan 750021, China
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| Abstract: |
| 【Objective】To improve the utilization efficiency of limited precipitation in the low elevation area of Helan Mountain. 【Method】Taking the population of prunus mongolica in low elevation area of Helan Mountain as the research object, we set up three artificial rain-collecting treatments, namely, film mulching-microtopography (A2), litter mulching (A3), and film mulching-microtopography+mulching litter(A4), and none artificial treatment as the control (A1), and investigated the dynamics of the soil moisture in the rooting area of prunus mongolica and the growth of prunus mongolica in the low mountainous area of Helan Mountain with different artificial rain-collecting treatments. 【Result】① The highest soil moisture in Mongolian lentil under different rain-collecting treatments was A4 treatment, followed by A2 treatment, with an average soil moisture of 11.91% and 10.64%, respectively, which was an increase of 3.77% and 2.5%, respectively, compared to the average soil moisture of the A1 treatment; ② Rain-collecting treatment could improve the growth of shoots of prunus mongolica, and the growth of shoots in A4 treatment was the largest, and followed by A2, A3 treatment, and the growth of new shoots of prunus mongolica was greatly improved compared with that of A1 treatment; the enhancement of chlorophyll amount of prunus mongolica leaves by rain-collecting treatment was shown in the following way: A4 treatment > A2 treatment > A3 treatment, and all of them were higher than that of A1 treatment; ③ Plant leaf area and new growth were significantly corrected with soil moisture under rain-collecting treatments, mainly the A4 and A2 treatment; ④Rain-collecting technology promotes the growth and development of prunus mongolica thickets by regulating soil moisture and increasing the amount of chlorophyll in the leaves, thereby increasing the ability of prunus mongolica to withstand drought. 【Conclusion】The rain-collecting treatment of A4 and A2 can help to restore the vegetation of prunus mongolica in low elevation area of Helan Mountain; artificial rain-collecting treatments can improve the soil environment and promote the growth of prunus mongolica at the same time, which is conducive to the reconstruction of the ecosystems of low elevation area of Helan Mountain and the sustainable development of the recovery of the vegetation. |
| Key words: low elevation area of Helan mountain; prunus mongolica; rain-collecting; water content |
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