Soil water effects of agroforestry in rainfed jujube ( Ziziphus jujube Mill.) orchards on loess hillslopes in Northwest China

Li, Qiang; Zhao, Xueyong; Zhao, Xining; Huang, Jun; Li, Hongchen; Li, Lusheng; Sun, Wenhao; Wu, Pute

doi:10.1016/j.agee.2017.06.031

Cited by 61 publications

(20 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One of the main strategies for addressing the problems and enhancing the ecosystem services of degraded landscapes is to establish plantations (Feng et al 2005;Payn et al 2015). However, the effectiveness of tree monocultures is often compromised by their simple structures and associated limitations of ecological functions, such as carbon sequestration, soil conservation, water retention and ecological stability (Jia et al 2012;Ling et al 2017;Vesterdal et al 2008). Agroforestry, an ecosystem with multi-layered structure that combines forestry and agricultural techniques, is a promising solution that is expected to buffer the microclimate, improve soil structure and increase biodiversity (Chen et al 2019;Jose 2009;Lin 2010).…”

Section: Introductionmentioning

confidence: 99%

“…However, due to anticipated climate change, more intense and frequent droughts are expected, particularly in semiarid regions (Huang et al 2017;Porporato et al 2004), which may lead to interspecific water competition and offset the potential benefits mentioned above (Fernández et al 2006;Gao et al 2013). Some studies have found that extreme drought reduced water availability and the productivity of agroforestry systems (Fernández et al 2006;Ling et al 2017;Payn et al 2015). In such cases, the use of trees with deep and dimorphic roots that can flexibly adjust their water sources according to changes in the soil water profile may be essential for maintaining ecosystems' stability and productivity (Canadell et al 1996;Fernández et al 2008;Yang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes

Zhao

Zhao²,

Wang³

2020

Plant Soil

Self Cite

View full text Add to dashboard Cite

Aims Intercropping in plantations can improve ecosystem services, but its potential effects on trees' water use and production are concerns due to increases in water scarcity related to climate change. The aim of this study was to address these concerns by exploring water uptake responses of jujube (Ziziphus jujuba Mill.) trees to intercropping and extremely dry periods on the semiarid Loess Plateau of China. Methods Natural stable isotopes (2 H and 18 O) were analysed to characterize water use patterns of jujube trees and intercrops in the main tree and crop root overlap layer (ROL, 0-120 cm). 10% stable deuterated water was injected at three targeted depths (2, 3 and 4 m) to characterize the water uptake of jujube trees below the main root overlap layers (BOL). Results In ROL, intercropped jujube trees obtained higher proportions of water in shallower and deeper layers than monocultured jujube trees during wet and dry periods, respectively. Proportional contributions of soil layers to the trees' water uptake were positively correlated with the layers' water amount ratios (relative to the entire profile) in intercropped orchards but not in monoculture. In some extremely dry periods, intercropping resulted in jujube trees absorbing deeper water (up to 3 m) in BOL. Conclusions At the early stage of land-use change from plantation to agroforestry, intercrops induce jujube trees to absorb higher proportions of water from soil layers with high proportions of total water contents in ROL. The soil water in BOL is an important buffer for maintaining water supplies for tree growth in agroforestry systems in case of extreme drought.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes

Zhao

Zhao²,

Wang³

2020

Plant Soil

Self Cite

View full text Add to dashboard Cite

show abstract

“…El arreglo SI, presentó menor densidad aparente el cual favorece el desarrollo radical en las diferentes profundidades (Figura 1) por lo que mejora la estructura del suelo y la porosidad (Ling et al, 2017).…”

Section: Densidad Aparenteunclassified

Biomasa de raíces finas en arreglos agroforestales con cacao en la amazonia occidental colombiana

2018

rcia

View full text Add to dashboard Cite

Los arreglos agroforestales con cacao poseen una estructura diversificada, la cual influye sobre el comportamiento de las raíces finas, cuya distribución está influenciada por las diferentes prácticas culturales. El objetivo del presente trabajo fue estudiar la distribución, el aporte de biomasa de raíces finas en relación con la densidad aparente y el porcentaje de humedad en arreglos agroforestales con cacao en el Centro de Investigaciones CIMAZ Macagual (1°37’LN y 75°36’LO). El muestreo se desarrolló en tres arreglos agroforestales con cacao clasificados en sombra intensa, semisombra y pleno sol. Para la extracción de la biomasa de raíces se utilizó el cilindro de volumen conocido cada 10cm hasta llegar a 1m de profundidad. Las raíces finas fueron extraídas a través de una malla de un tamaño <2mm. Se presentaron diferencias estadísticas significativas entre la interacción arreglo-profundidad para la variable biomasa de raíces (<0,001) con una correlación positiva (0,26) entre el peso y la densidad aparente. La mayor acumulación de biomasa de raíces se presentó entre los primeros 20cm de profundidad en los tres sistemas estudiados, donde la densidad aparente aumenta en los diferentes perfiles del suelo; a su vez la humedad gravimétrica fue mayor en los arreglos agroforestales que en cacao a pleno sol, mostrando diferencias significativas (P<0,001) con una correlación negativa (-0,75) en cuanto a las profundidades. En este sentido, los sistemas agroforestales favorecen la disponibilidad de agua en los primeros perfiles del suelo aumentando la presencia de raíces finas.

show abstract

“…It has been found that the agroforestry systems have stable internal microclimatic environments or higher resistance and they retained much more soil water and improved the water use efficiency. Ling et al [6] studied the effects on root-zone soil water for intercropping. The results showed that both agroforestry systems clearly improved soil water at depths of 0-20 cm and 20-60 cm under jujube trees.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Evapotranspiration of a Jujube/Cotton Intercropping System in an Arid Area Based on the Dual Crop Coefficient Method

Pengrui

Ying-jie

2020

Agriculture

View full text Add to dashboard Cite

An accurate estimation of crop evapotranspiration (ETc) in intercropping is critical for a theoretical basis for formulating an intercropping irrigation system of fruit trees and improving the soil moisture condition of orchards in arid regions of Southern Xinjiang. Herein, observational data such as soil moisture and plant physiological indicators were measured in jujube/cotton intercropping in the Aksu region from 2015 to 2017. The evapotranspiration of single-crop jujube and cotton was estimated using the modified dual crop coefficient method. Then, based on the proportion of intercropping crops, the soil water stress coefficient was introduced to estimate the evapotranspiration of the jujube/cotton intercropping. The results show that the model has good applicability to simulate single-crop jujube and cotton, and jujube/cotton intercropping. However, compared with single cropping, the accuracy of simulated daily evapotranspiration was decreased. In addition, adjusting the cotton irrigation amount caused the simulation accuracy to further decrease. From the perspective of interspecies complementarity and competition, cotton dominated the intercropping system and had better tolerance to external environmental changes than jujube trees. Intercropping had negative effects on jujube trees in general, and very obvious positive effects on cotton. Based on the 3-year crop yield, 5-year-old jujube trees are recommended for intercropping. During this time, the yield of cotton under the effect of interspecific complementation increased by 26.47%, and the yield of intercropping jujube was similar to that of single crop. As the jujube tree age increases, the effect of increasing cotton production gradually diminishes. The jujube trees also had a significant reduction in yield due to interspecific competition. Our research supports the dual crop coefficient method as appropriate to estimate crop ETc in intercropping and may be further used to improve irrigation scheduling for jujube/cotton intercropping.

show abstract

Soil water effects of agroforestry in rainfed jujube ( Ziziphus jujube Mill.) orchards on loess hillslopes in Northwest China

Cited by 61 publications

References 39 publications

Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes

Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes

Biomasa de raíces finas en arreglos agroforestales con cacao en la amazonia occidental colombiana

Estimation of Evapotranspiration of a Jujube/Cotton Intercropping System in an Arid Area Based on the Dual Crop Coefficient Method

Contact Info

Product

Resources

About