Evapotranspiration Characteristics and Soil Moisture Conditions of Ginkgo Biloba in Urban Gardens
Journal Title: Bulletin of Soil and Water Conservation - Year 2023, Vol 43, Issue 2
Abstract
[Objective] The variation characteristics of 0—300 cm soil water content of urban garden green space in the Guanzhong area were studied to determine the variation characteristics of evapotranspiration and its components in an urban garden green space in order to provide a scientific basis for efficient urban water management. [Methods] We used Ginkgo biloba as an example, soil moisture of a garden green space with G. biloba as the main scenic tree was measured with a neutron moisture meter. The sap flow rates for G. biloba trunks of 24 and 29-year old trees was monitored with thermal diffusion probes in 2020. Soil evaporation between trees was measured with micro-evaporating dishes, and evapotranspiration and its components were calculated. [Results] The variation of 0—300 cm soil water content in the two green spaces was basically moderate. The transpiration range of 24-year old G. biloba green space was 0.24~9.06 mm/d, and transpiration accounted for 51.77%~71.92% of evapotranspiration. The respective ranges in the 29-year old green space were 0.46~19.76 mm/d and 64.45%~79.24%. [Conclusion] In an urban ecosystem, the largest component of evapotranspiration of G. biloba green space of different tree ages was transpiration, and transpiration accounted for the largest proportion from July to August. There was no obvious relationship between soil water environment change and tree age, and the correlation with tree evapotranspiration was weak.
Authors and Affiliations
Jinghan Ma, Yan Mu
Keywords
Related Articles
- EP ID EP762513
- DOI 10.13961/j.cnki.stbctb.20230217.001
- Views 11
- Downloads 0
Identification of Urban Ecological Corridors and Key Nodes in Dongguan City from Waterfowls-Friendly Perspective
[Obiective] The spatial distribution pattern of waterfowl ecological corridors in Dongguan City, Guangdong Province were studied in order to provide a realistic basis for its ecological restoration. [Methods] We consider...
Evaluation on Soil Quality Changes due to Land from Hill Cutting in Beishan Mountain in Lanzhou City
[Objective] The soil quality changes caused by land from hill citting in Beishan Mountain in Lanzhou City were assessed in order to provide a scientific basis and suggestions for land-cutting and land-reclamation project...
Effects of Winter Irrigation on Soil Water-heat-salt Migration and Crop Growth During Freezing-Thawing Period in Qingtongxia Irrigation District of Ningxia
[Objective] The effects of winter irrigation on soil water-heat-salt migration and crop growth during the freezing-thawing period were analyzed in order to provide a scientific basis for controlling soil salinization, an...
Fungal Diversity and Its Response to Environmental Factors During Decay Process of Salix Psammophila Sand Barriers
[Objective] The effects of Salix psammophila sand barrier decay on the composition and diversity of fungal communities were analyzed in order to provide a theoretical basis for further research on the ecological function...
Population Structure Characteristics and Survival Status of Natural Platycladus Orientalis in Loess Hilly Region
[Objective] Population structure characteristics and survival status of natural Platycladus orientalis in the loess hilly region were determined in order to provide a scientific basis for high-quality and sustainable dev...