The aim of this study was to investigate the photosynthetic performance and litter production of planted (PLA) and natural (NAT) mangroves in Trang, southern Thailand. Relative chlorophyll content and other photosynthetic parameters, such as photosynthetic efficiency of Photosystem II (Phi2), yield of non-regulatory energy dissipation (PhiNO), yield of non-photochemical quenching (PhiNPQ) and quenching due to non-photochemical dissipation of absorbed light energy (NPQt), and litter fall production were determined and compared between two mangrove stands. Measurements of photosynthetic parameters were made using PhotosynQ to assess the health of the community structure in both stands. The assumption of this study, namely that there would be no significant difference in any photosynthetic parameter measured between the two stands, was confirmed using t-test with unequal variances confirmed (P > 0.05 for all). Changes occurred quarterly and in sites with different species. In terms of litter production, significant differences were found according to stand (P < 0.001), season (P < 0.05) and site (Sikao, F_3,129 = 4.357, P < 0.01; Kantang, F_3,190 = 3.243, P < 0.01). PLA stands demonstrated similar photosynthetic characteristics to NAT stands. This study established the effects of land use changes on PLA mangroves (planted in an abandoned shrimp pond). The overall significance of the study is in highlighting the positive outcomes of mangrove restoration, particularly in degraded mangrove stands due to land use change.

本研究的目的是调查泰国南部董里种植 (PLA) 和天然 (NAT) 红树林的光合性能和凋落物产量。相对叶绿素含量和其他光合参数，例如光系统 II (Phi2) 的光合效率、非调节能量耗散率 (PhiNO)、非光化学猝灭率 (PhiNPQ) 和吸收光非光化学耗散导致的猝灭确定并比较了两个红树林林分之间的能量 (NPQt) 和凋落物产量。使用PhotosynQ 测量光合参数以评估两个林分中群落结构的健康状况。本研究的假设，即两个林分之间测量的任何光合参数没有显着差异，t检验具有不等方差的确认（ 所有P > 0.05）。变化发生在季度和不同物种的地点。在凋落物产量方面，不同林分（P  < 0.001）、季节（P < 0.05）和立地（ Sikao, F _3,129  = 4.357, P  < 0.01; Kantang, F _3,190  = 3.243, P < 0.01)。PLA 林分表现出与 NAT 林分相似的光合特性。本研究确定了土地利用变化对 PLA 红树林（种植在废弃虾池中）的影响。该研究的总体意义在于强调红树林恢复的积极成果，特别是由于土地利用变化而退化的红树林。