双台河口翅碱蓬生长与根、茎、叶碳、氮的分配  

Analysis of growth and allocation of carbon and nitrogen in different organs( root,stem,and leaf) of Suaeda heteroptera,a halophyte thriving in Shuangtai Estuary

作　　者：刘长发[1] 苑静涵 刘远[1] 方蕾[1] 王艺婷[1] 陶韦 李晋 LIU Changfa YUAN Jinghan LIU Yuan FANG Lei WANG Yiting TAO Wei LI Jin(Key Laboratory of Offshore Marine Environmental Research of Liaoning Higher Education, Dalian Ocean University, Dalian 116023, China Panfin Institute of Ocean and Fisheries, Panjin 124010, China)

机构地区：[1]大连海洋大学近岸海洋环境科学与技术辽宁省高校重点实验室,大连116023 [2]盘锦市海洋与渔业科学研究所,盘锦124010

出　　处：《生态学报》2017年第16期5492-5503,共12页Acta Ecologica Sinica

基　　金：国家自然科学基金(41171389);国家海洋公益性行业科研专项(201305043);辽宁省高等学校优秀科技人才支持计划(LR2013035);国家海洋局近岸海域生态环境重点实验室基金(201305)

摘　　要：生物个体生长过程是其同化作用和异化作用过程中物质和能量吸收、转运、储存、排出平衡的综合结果,体现了生物对其生存环境的适应。对采集于双台河口潮滩湿地的翅碱蓬(Suaeda heteroptera)进行株高和根、茎、叶碳、氮含量测定的结果显示,以AIC_C和adj-R^2为准则选择的翅碱蓬株高生长模拟方程为Logistic方程。采用多模型推断确定的双台河口翅碱蓬平均理论渐近株高H_∞为(38.11±2.59)cm。翅碱蓬根、茎、叶碳含量分别为(37.92±4.40)%、(39.98±3.12)%、(28.27±3.41)%;氮含量分别为(0.68±0.35)%、(0.94±0.31)%、(1.26±0.19)%。仅根碳、氮含量与株高间呈显著负相关生长关系。翅碱蓬根碳、氮相对含量分别为97.8±2.1、90.2±9.2,与株高(8.1—36.6 cm)相比,翅碱蓬根碳、氮积累可能受到了环境条件限制。Plant growth is the result of material metabolism and energy transformation under two opposing processes：catabolism and anabolism. The metabolic balance of plants should be maintained for better acclimation to the surrounding environment. In the present study, growth parameters of the halophyte Suaeda heteroptera, which thrives in Shuangtai Estuary, were examined, including the height of plants and the amounts of carbon （C） and nitrogen （N） in the roots, stems, and leaves. The data collected were analyzed using three different models：the von Bertalanffy growth model, the logistic growth model, and the Gompertz growth model. The logistic growth model proved optimal because it minimized the effects of small sample size, is a bias-corrected form of Akaike＇s information criterion, and maximized the adjusted R square. The mean asymptotic height was estimated to be （38.11±2.59） cm when utilizing the multi-model inference approach. The absolute values of C in the root, stem, and leaf of S. heteroptera were （37.92±4.40）%, （39.98±3.12）%, and （28.27±3.41）%, respectively. The absolute values of N in the root, stem, and leaf of S. heteroptera were （0.68±0.35）%, （0.94±0.31）%, and （1.26±0.19）%, respectively. The allocation of C and N in the root was negatively correlated with the height of the plant. In comparison to the height （8.1-36.6 cm）, the relative values of C and N in the root of S. heteroptera were （97.8±2.1） and （90.2±9.2）, respectively, which implies that the accumulation of C and N in the root might be restricted by environmental conditions.

关 键 词：翅碱蓬 生长 碳 氮 分配 

分 类 号：Q948[生物学—植物学]