WANG Fugang,XU Weizhou,KANG Furen,et al.Photosynthetic Light-Response Curves of Populus simonii Under Different Slope Aspects[J].Research of Soil and Water Conservation,2015,22(06):177-182.
不同坡向条件下小叶杨光合光响应曲线研究
- Title:
- Photosynthetic Light-Response Curves of Populus simonii Under Different Slope Aspects
- 分类号:
- Q945.11;S718.51+1
- 摘要:
- 为研究黄土丘陵区不同坡向条件下人工栽培灌木小叶杨林（Populus simonii）的光合生理特征，测定了地处阴坡、半阴坡、半阳坡和阳坡条件下小叶杨光合光响应曲线季节变化特征。结果表明：直角双曲线修正模型能很好的拟合不同坡向条件下小叶杨的光合光响应曲线，其光合光响应曲线均无光饱和现象；阳坡条件下的小叶杨最大净光合速率（Pmax）均显著低于阴坡、半阴坡和半阳坡，且均以7月下旬最高；5月下旬，阳坡和半阳坡条件下的表观量子效率（AQE）显著高于阴坡和半阴坡条件，而7月下旬和9月中旬的AQE分别以阳坡和阴坡显著最高；不同坡向条件下的光饱和点（LSP）以7月下旬和9月中旬显著最高，而光补偿点（LCP）与暗呼吸速率（Rd）均以9月中旬显著最低；5月下旬，小叶杨的水分利用效率（WUE）以阴坡条件下显著最高，7月下旬以半阴坡条件下显著最高，9月中旬以阴坡和半阴坡条件下显著最高。综合分析表明在黄土丘陵区种植小叶杨的最适宜坡向顺序为：阴坡 > 半阴坡 > 半阳坡 > 阳坡。
- Abstract:
- For the study of photosynthetic physiological characteristics of Populus simonii under different slope aspect in the Loess hilly and gully Region. Photosynthetic light-response curves of those species which are located on north-facing slope, half-north-facing, half-south-facing and south-facing slopes were investigated. Results indicated that the modified rectangular hyperbola model could well discribe the photosynthesis-light response curves of Populus simonii under different slope aspects, and there were no photosynthesis-photoinhibition of those species during their growing periods. The maximum net photosynthetic rate (Pmax) of Populus simonii on north-facing slope in late May or mid September were significantly higher than the other three slope aspects , and those values of the species under any of the four slope conditions were significantly higher in late July. In late May, the apparent quantum efficiency (AQE) of Populus simonii under half-south-facing or south-facing slopes conditions was significantly higher than those under north-facing slope and half-north-facing conditions. Under four slope aspect conditions, the light saturation points (LSP) of Populus simonii in late May were significantly lower than those in late July or mid September, and the light compensation points (LCP) or dark respiration rate (Rd) in mid September were significantly lower than those in late May and late July. In late May, the water use efficiency(WUE) was significantly higher on north-facing slope, and the value was significantly higher on half-north-facing slope in late July, while in mid September, the values were significantly higher under north-facing and half-north-facing slope. The best order of slope aspects in the loess hill abd gully region was north-facing slope > half-north-facing > half-south-facing > south-facing slopes.
参考文献/References:
[1] 张淑勇,周泽福,张光灿,等.半干旱黄土丘陵区4种天然次生灌木光合生理和水分利用特征[J].林业科学,2008,44(12):140-146.
[2] 万雪琴,胡庭兴,张健,等.坡耕地退耕还林后的植被恢复[J].林业科学,2005,41(2):191-194.
[3] 聂莹莹,李新娥,王刚.阳坡-阴坡生境梯度上植物群落α多样性与β多样性的变化模式及与环境因子的关系[J].兰州大学学报:自然科学版,2010,46(3):73-79.
[4] 李俊辉,李秧秧.立地条件和树龄对刺槐叶形态及生理特性的影响[J].水土保持研究,2012,19(4):176-181.
[5] 徐伟洲,徐炳成,段东平,等.不同水肥条件下白羊草光合生理生态特征研究.光响应曲线[J].草地学报,2010,18(6):773-779.
[6] 张中峰,黄玉清,莫凌,等.岩溶植物光合-光响应曲线的两种拟合模型比较[J].武汉植物学研究,2009,27(3):340-344.
[7] 时慧君,杜峰,张兴昌.毛乌素沙地几种主要植物的光合特性[J].西北林学院学报,2010,25(4):29-34.
[8] 张颖,朱铭强,李浩,等.半干旱黄土丘陵区4种灌木树种的光合特性研究[J].西北农林科技大学学报:自然科学版,2012,40(3):65-70.
[9] 温仲明,从怀军,焦峰,等.黄土丘陵沟壑区小叶杨林生长的空间差异分析:以吴旗县为例[J].水土保持通报,2005,25(1):15-17.
[10] 叶子飘,于强.光合作用光响应模型的比较[J].植物生态学报,2008,32(6):1356-1361.
[11] 祝顺波,许文年,刘刚,等.坡度对紫花苜蓿和狗牙根光合生理特性的影响[J].水土保持研究,2012,19(2):218-221.
[12] Farquhar G D, von Caemmerer S, Berry J A. A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species[J]. Planta,1980,149(1):78-90.
[13] 张婷,张文辉,郭连金,等.黄土高原丘陵区不同生境小叶杨人工林物种多样性及其群落稳定性分析[J].西北植物学报,2007,27(2):340-347.
[14] Olsson T, Leverenz J W. Non-uniform stomatal closure and the apparent convexity of the photosynthetic photon flux density response curve[J]. Plant, Cell & Environment,1994,17(6):701-710.
[15] 许大全.光合作用效率[M].上海:上海科学技术出版社,2002.
[16] 李扬,黄建辉.库布齐沙漠中甘草对不同水分和养分供应的光合生理响应[J].植物生态学报,2009,33(6):1112-1124.
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备注/Memo
收稿日期:2014-11-17;改回日期:2014-12-31。
基金项目:陕西省教育厅专项科研项目（12JK0823）；榆林市科技计划项目（NYGG201106）；榆林学院科研项目（11YK24）
作者简介:王富刚(1980-),男,陕西府谷人,硕士研究生,讲师,主要从事植物生理方面的教学与科研工作。E-mail:88415365@qq.com
通讯作者:徐伟洲(1985-),男,陕西蓝田人,博士研究生,讲师,主要从事植物生理生态适应性的研究。E-mail:wzxu@yulinu.edu.cn