Responses of Sap Flow to Environmental Factors in Robinia pseudoacacia Plantations with Different Degrees of Degradation

• Published in: Shui tu bao chi xue bao Vol. 39; no. 2; pp. 269 - 278
• Main Authors: MA Jun, HAN Lei, LIU Lili, WANG Nana, MA Yunlei, MA Shijie, WANG Yuan
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Journal of Soil and Water Conservation 01.04.2025
• Subjects: degradation; environmental factors; response threshold; robinia pseudoacacia; sap flow velocity
• ISSN: 1009-2242
• DOI: 10.13870/j.cnki.stbcxb.2025.02.025

［Objective］ Research on the characteristics of sap flow velocity and its responses to environmental factors in plantations with different degrees of degradation is helpful to reveal the mechanisms of forest degradation, and can provide a scientific basis for structure adjustment and management of regional plantations. ［Methods］ Taking Robinia pseudoacacia plantations in the east area of Yellow River in Ningxia as the research objects, the stem sap flow velocities of R. pseudoacacia with different degrees of degradation were measured by TDP thermal diffusion sap flow meter from May to October, 2023, and the environmental variables were monitored at the same time. The response relationships between environmental variables and the stem sap flow velocities of non-degraded R. pseudoacacia plantation (NDPP), moderately degraded R. pseudoacacia plantation (MDPP) and heavily degraded R. pseudoacacia plantation (HDPP) were studied. ［Results］ 1) The daily average sap flow velocity of NDPP, MDPP and HDPP were 2.32, 0.84