期刊
PLANTS-BASEL
卷 10, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/plants10112407
关键词
arid and semiarid; afforestation; desertification; drought effects; compost fertilizer
资金
- National University of Mongolia [P2019-3635]
- R&D Program for Forest Science Technology [2021317B10-2122-AA03, 2021379B10-2123-BD02]
- Korea Forest Service (Korea Forestry Promotion Institute)
Desertification is hindering reforestation efforts in Mongolia, leading to a study on the effects of irrigation and fertilization on Populus sibirica Hort. Ex Tausch and Ulmus pumila L. The optimal strategy discovered was 4 or 8 L h(-1) irrigation combined with NPK or compost for these species in arid and semi-arid regions.
Desertification is impeding the implementation of reforestation efforts in Mongolia. Many of these efforts have been unsuccessful due to a lack of technical knowledge on water and nutrient management strategies, limited financial support, and short-lived rainfall events. We investigated the effects of irrigation and fertilization on the morphophysiological traits of Populus sibirica Hort. Ex Tausch and Ulmus pumila L. and to suggest irrigation and fertilization strategies for reforestation. Different irrigation and fertilizer treatments were applied: no irrigation, 2 L h(-1), 4 L h(-1), and 8 L h(-1) of water; no fertilizer, 2 L h(-1) + NPK, 4 L h(-1) + NPK, and 8 L h(-1) + NPK; and no compost, 2 L h(-1) + compost, 4 L h(-1) + compost, and 8 L h(-1) + compost. The leaf area (LA) and specific leaf area (SLA) of both species responded positively to 4 and 8 L h(-1). Results also showed that the addition of either NPK or compost to 4 or 8 L h(-1) irrigation resulted in a higher LA, SLA, and leaf biomass (LB). Total chlorophyll content decreased with irrigation in both species. The same pattern was detected when a higher amount of irrigation was combined with fertilizers. Lastly, we found that both diurnal and seasonal leaf water potential of plants grown in 4 or 8 L h(-1) were significantly higher than those of plants grown in control plots. Therefore, 4 or 8 L h(-1) with either NPK or compost has shown to be the optimal irrigation and fertilization strategy for the species in an arid and semiarid region of Mongolia. Results should provide us with a better understanding of tree responses to varying amounts of irrigation with or without fertilizer in pursuit of sustainable forest management in arid and semiarid ecosystems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据