Modeling growth response to soil water availability simulated by HYDRUS for a mature triploid Populus tomentosa plantation located on the North China Plain

Xi, Benye; Bloomberg, Mark; Watt, Michael S.; Wang, Ye; Jia, Liming

doi:10.1016/j.agwat.2016.06.017

Cited by 53 publications

(19 citation statements)

References 31 publications

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“…The simulated data matched statistically well with the measured data. Xi et al (2016) evaluated HYDRUS-3D model under subsurface drip irrigation conditions for a mature triploid Populus tomentosa using field data. The average soil water content which was simulated with HYDRUS-3D model agreed well with the measured values.…”

Section: Resultsmentioning

confidence: 99%

Comparison of HYDRUS-3D Soil Moisture Simulations of Subsurface Drip Irrigation with Experimental Observations in the South of France

Honari

Ashrafzadeh

Khaledian

et al. 2017

J. Irrig. Drain Eng.

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The purpose of the present research, was evaluating the performance of HYDRUS-3D model for simulating soil moisture under field conditions for corn and durum wheat in a Mediterranean climate. Furthermore, the PILOTE model was also used for accounting root water extraction. Soil moisture at different depths was measured by a neutron probe before irrigation. Observed soil moisture values were compared with simulated data using statistical indices i.e. the root mean square error (RMSE) and the normalized root mean square error (NRMSE). The ranges of water content NRMSE were between 6.3-7.5 percent. The performance of the model based on calculated NRMSE values have been placed in the excellent category for simulation of the soil water content. Ranges of RMSE were obtained between 0.0174 and 0.0190 cm 3 cm-3 , though the values are very low. The results of these two statistical indices indicated the high ability of the model in simulating soil water content.

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Section: Resultsmentioning

confidence: 99%

Comparison of HYDRUS-3D Soil Moisture Simulations of Subsurface Drip Irrigation with Experimental Observations in the South of France

Honari

Ashrafzadeh

Khaledian

et al. 2017

J. Irrig. Drain Eng.

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“…At the end of April in 2010, one rectangular experimental plot of 4 m 2 was established within the average growing space around the sample tree, and the plot boundaries were along the middle lines between the sample tree and its adjacent trees in four directions (Figure 1). Twelve access tubes 2 m in length were installed within the experimental plot, and these were located in different distances from the trunk (detail of the installation scheme can be found in Xi et al [23]. A TDR tube probe (TRIME-IPH, IMKO Inc., Ettlingen, Germany) was then utilized to measure the soil volumetric water content (θ, cm 3 cm −3 ) dynamics within the plot from early April to early August with measurement intervals of 1-11 days.…”

Section: Soil Water Contentmentioning

confidence: 99%

“…Knowledge of tree water use is also pivotal for developing efficient cultivation practices for promoting forest productivity and quality [5,21] and it can help to predict tree growth [22,23]. Thus, a huge number of researchers have investigated the water use of plantations of many tree species [13][14][15]22].…”

Section: Introductionmentioning

confidence: 99%

Leaf Phenology Variation within the Canopy and Its Relationship with the Transpiration of Populus tomentosa under Plantation Conditions

Wang

et al. 2018

Forests

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To provide a theoretical basis for developing intensive cultivation practices for Populus tomentosa plantations, the leaf phenology variation within the canopy and its relationship with transpiration of well-watered P. tomentosa tree in a dense plantation were investigated. The variation in canopy light interception, indicated by the ratio between net radiation under (Rn-u) and above (Rn-a) canopy, with leaf development was also studied. During the growing season, the achievement of maximum leaf number tended to be later in higher parts of the canopy. In the lower and middle canopy, the leaf number maximized earlier in the east-facing side than in the west-facing side, but this difference disappeared in the upper canopy. The Rn-u/Rn-a was stable in May, but declined and then varied steadily until late August. Generally, in May, the crop coefficient (Kcb) of the tree reached its highest level and was not correlated with leaf area (LA) in all layers (p > 0.05). However, it increased linearly (p < 0.001) with LA in the layers above a canopy height of 3 m from June to late August, and most of its variation was explained by LA in the 5–7 m layer. After late August, Kcb decreased linearly with decreasing LA in all layers (p < 0.001). Consequently, a temporal ecological strategy seems to be adopted by P. tomentosa leaves in different layers and azimuthal sides for efficient light acquisition. The contribution of the different canopy layers to tree transpiration can vary, with the leaves in the upper and all layers mainly controlling transpiration in summer and in spring and autumn, respectively.

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“…Among the fast-growing tree species, poplars have the largest planting area and timber yield in temperate regions of the world. In China alone [4], the area planted with poplar exceeds 8.5 million ha. Intensively cultivated poplar plantations generally require a comprehensive management program to yield more high-quality timber and biomass.…”

Section: Introductionmentioning

confidence: 99%

“…In Denmark, research on the yield production of 36 poplar clones showed that the clones had differing productivity, with Populus maximowiczii × trichocarpa showing the highest yield and Populus deltoides the lowest yield [19]. China has been making progress in the breeding and cultivation of fast-growing poplars trees, for example, the fast-growing clones of P. tomentosa [4,[20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Effects of Soil Water and Nitrogen on the Stand Volume of Four Hybrid Populus tomentosa Clones

Zhu

et al. 2017

Forests

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With the aim of improving poplar timber production, a successive 8-year irrigation and fertilization factorial experiment with three blocks was designed to measure the response of Populus tomentosa stands to water and nitrogen in Huabei Plain, China. Specifically, we examined the responses of four P. tomentosa clones (P. tomentosa BT17, S86, B331, and 1316) to three irrigation levels (45%, 60%, and 75% above field capacity), as irrigation thresholds, and four N levels (0, 80, 160, and 240 g per plant). The results showed that both irrigation and nitrogen had significant effects in terms of improving clone stand volume. Further, we demonstrated positive interactions between irrigation and nitrogen. The stand volume increment of the four hybrid clones varied from 104.53 ± 19.84 to 191.35 ± 30.56 m 3 /ha in the descending order S86 > B331 > BT17 > 1316. With increasing irrigation level, the average stand volume of the four clones increased significantly from 120.46 ± 5.23 to 158.53 ± 21.72 m 3 /ha. When nitrogen level was increased from 0 to 240 g/plant, the average stand volume increment of the four clones increased from 126.04 ± 8.75 to 156.16 ± 26.01 m 3 /ha, respectively. Our results suggest that a comprehensive and specific management program is needed to improve poplar timber production.

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Modeling growth response to soil water availability simulated by HYDRUS for a mature triploid Populus tomentosa plantation located on the North China Plain

Cited by 53 publications

References 31 publications

Comparison of HYDRUS-3D Soil Moisture Simulations of Subsurface Drip Irrigation with Experimental Observations in the South of France

Comparison of HYDRUS-3D Soil Moisture Simulations of Subsurface Drip Irrigation with Experimental Observations in the South of France

Leaf Phenology Variation within the Canopy and Its Relationship with the Transpiration of Populus tomentosa under Plantation Conditions

Effects of Soil Water and Nitrogen on the Stand Volume of Four Hybrid Populus tomentosa Clones

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