Relationships between artificial Haloxylon <i>ammodendron</i> communities and soil-water factors in Minqin oasis-desert ecotone

Peng, 赵鹏 Zhao; Xianying, 徐先英 Xu; Jianjun, 屈建军 Qu; Jinhu, 张进虎 Zhang; Quanlin, 马全林 Ma; Huiwen, 张慧文 Zhang; Gaoxing, 徐高兴 Xu; Junmei, 马俊梅 Ma; Yongmei, 吴永梅 Wu

doi:10.5846/stxb201509041825

Cited by 4 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because the temperature decreased and diurnal temperature difference was so large in September, photosynthetic effective radiation was diminished and the abscisic acid content of H. ammodendron was at its greatest level (Ma et al, 2012). This would have cued H. ammodendron plants to enter dormancy (Zhao et al, 2017;Gao et al, 2020), thus leading to low water consumption.…”

Section: Variation In the Water Consumption Of H Ammodendron At Diffe...mentioning

confidence: 99%

Stem sap flow of Haloxylon ammodendron at different ages and its response to physical factors in the Minqin oasis-desert transition zone, China

Qiang

Zhang

et al. 2023

J. Arid Land

View full text Add to dashboard Cite

Haloxylon ammodendron, with its tolerance of drought, high temperature, and salt alkali conditions, is one of the main sand-fixing plant species in the oasis-desert transition zone in China. This study used the TDP30 (where TDP is the thermal dissipation probe) to measure hourly and daily variations in the stem sap flow velocity of H. ammodendron at three age-classes (10, 15, and 20 years old, which were denoted as H10, H15, and H20, respectively) in the Minqin oasis-desert transition zone, China, from May through October 2020. By simultaneously monitoring temperature, relative humidity, photosynthetically active radiation, wind speed, net radiation, rainfall, and soil moisture in this region, we comprehensively investigated the stem sap flow velocity of different-aged H. ammodendron plants (H10, H15, and H20) and revealed its response to physical factors. The results showed that, on sunny days, the hourly variation curves of the stem sap flow velocity of H. ammodendron plants at the three age-classes were mainly unimodal. In addition, the stem sap flow velocity of H. ammodendron plants decreased significantly from September to October, which also delayed its peak time of hourly variation. On rainy days, the stem sap flow velocity of H. ammodendron plants was multimodal and significantly lower than that on sunny days. Average daily water consumption of H. ammodendron plants at H10, H15, and H20 was 1.98, 2.82, and 1.91 kg/d, respectively. Temperature was the key factor affecting the stem sap flow velocity of H. ammodendron at all age-classes. Net radiation was the critical factor influencing the stem sap flow velocity of H. ammodendron at H10 and H15; however, for that at H20, it was vapor pressure deficit. The stem sap flow velocity of H. ammodendron was highly significantly correlated with soil moisture at the soil depths of 50 and 100 cm, and the correlation was strengthened with increasing stand age. Altogether, our results revealed the dynamic changes of the stem sap flow velocity in different-aged H. ammodendron forest stands and its response mechanism to local physical factors, which provided a theoretical basis for the construction of new protective forests as well as the restoration and protection of existing ones in this region and other similar arid regions in the world.

show abstract

Section: Variation In the Water Consumption Of H Ammodendron At Diffe...mentioning

confidence: 99%

Stem sap flow of Haloxylon ammodendron at different ages and its response to physical factors in the Minqin oasis-desert transition zone, China

Qiang

Zhang

et al. 2023

J. Arid Land

View full text Add to dashboard Cite

show abstract

“…H. ammodendron is a perennial C 4 plant unique to desert areas [4]. Due to its strong resistance to stress, such as salinity, high temperature, Forests 2024, 15, 52 2 of 13 drought, and barrenness, it is widely planted in the desert areas of northwest China as a sand-fixing tree species, with over 20 million new plants added so far [5]. Minqin County is a demonstration area for desertification control in China.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Water Consumption of Haloxylon ammodendron Sand-Fixing Forest in Minqin Oasis-Desert Ecotone of China Based on Leaf Index, China

Qiang,

Zhang,

Zhang

et al. 2023

Forests

View full text Add to dashboard Cite

In order to accurately estimate the water consumption of a Minqin desert Haloxylon ammodendron sand fixation forest, we used thermal equilibrium stem flow measurement to monitor the stem flow dynamics of Minqin desert H. ammodendron (5, 10, 15, and 20 years old, respectively, denoted as H5, H10, H15, and H20). In this study, we chose the growth index of assimilated branches (expressed as Ab in the following text) as the scalar quantity for expansion, and then estimated the water consumption of the H. ammodendron sand fixation forest by fitting the correlation between the water consumption of single H. ammodendron plants and the surface area and dry weight of single Ab. The results showed that the growth of assimilated H. ammodendron branches and the plant’s monthly water consumption were synchronized, and that the growth of Ab and water consumption were significantly higher during the fast-growth period of H. ammodendron (July) compared to during the leaf-expanding (May) and leaf-falling periods (October). After correlation analysis, it was determined that there was a linear function between the surface area and dry weight of Ab and water consumption in H. ammodendron. The simulated water consumption values (kg) of H. ammodendron sand fixation forests were greatly affected by stand density and branching configuration, and the simulated values of H. ammodendron assimilated branch growth (cm) were slightly smaller than the measured values for forests of different ages, while the simulated values of assimilated branch surface area (cm2) had a much smaller relative error (8.92%) on average. Therefore, it is feasible to use the surface area and dry weight of Ab to calculate the water consumption of H. ammodendron sand fixation forests. This can enable the reliable estimation of the water consumption of H. ammodendron forests and provide a reference for desert vegetation sand fixation afforestation and its ecological water management.

show abstract

“…Haloxylon ammodendron is the most widely distributed desert plant in the deserts of Central Asia and the largest tree species used in the dry zone for sand fixation and afforestation, and it is a typical desert sand fixation plant [1]. In China, Minqin has nearly 35,000 hm 2 of planted H. ammodendron forest, accounting for 51.5% of the total planted forest area, dominating the sand-fixing forests [2]. As early as the late 1950s, Minqin successfully introduced H. ammodendron for afforestation on sand dunes, and carried out large-scale promotion.…”

Section: Introductionmentioning

confidence: 99%

Study on the Dynamics of Stem Sap Flow in Minqin Wind and Sand Control Haloxylon ammodendron Forest, China

Qiang

Zhang

2022

Sustainability

View full text Add to dashboard Cite

In this study, we obtained real-time data on the stem fluid flow of Haloxylon ammodendron in the growing season in Minqin, China, based on thermal diffusion (TDP) monitoring technology, and analyzed the dynamic changes of stem fluid flow in it to provide important supporting evidence for understanding the water consumption of H. ammodendron during its growth. The results indicate that the fluid flow in the stem of the H. ammodendron increases with increasing growth age and also decreases as the H. ammodendron grows older and declines. The average daily sap flow rates of H. ammodendron stems were 0.956, 1.059, 1.460 and 0.570 cm3·(cm2·h)−1 at 5, 10, 15 and 20 years, respectively, and the cumulative sap flow masses during the growing season from May to October were 610.173, 423.386, 1041.186 and 430.212 kg, respectively. H. ammodendron stem sap flow increases with the thickening of H. ammodendron’s ground diameter. The average daily sap flow rate of H. ammodendron stems at different stem levels ranged from 0.276 to 2.132 cm3·(cm2·h)−1, and the cumulative sap flow mass during the growing season ranged from 121.656 to 1722.810 kg. The larger the diameter of the H. ammodendron at different forest ages, the earlier the sap flow initiation time and the higher the peak. The stem flow initiation time was 7:00–8:00, and the average daily maximum fluid flow rate was 2.493–5.536 cm3·(cm2·h)−1, with the peak occurrence time advancing with age. The sap flow variation of H. ammodendron at different stand ages reflects the water-consuming process of H. ammodendron growth and its response to a drought environment, while the sap flow variation of H. ammodendron at different diameter classes shows that the individual growth differences of H. ammodendron also yield obvious competitive advantages. The results of the analysis can provide theoretical support for the estimation of ecological water use in desert H. ammodendron sand-fixing forests.

show abstract

Relationships between artificial Haloxylon ammodendron communities and soil-water factors in Minqin oasis-desert ecotone

Cited by 4 publications

References 0 publications

Stem sap flow of Haloxylon ammodendron at different ages and its response to physical factors in the Minqin oasis-desert transition zone, China

Stem sap flow of Haloxylon ammodendron at different ages and its response to physical factors in the Minqin oasis-desert transition zone, China

Estimation of Water Consumption of Haloxylon ammodendron Sand-Fixing Forest in Minqin Oasis-Desert Ecotone of China Based on Leaf Index, China

Study on the Dynamics of Stem Sap Flow in Minqin Wind and Sand Control Haloxylon ammodendron Forest, China

Contact Info

Product

Resources

About