不同年龄橡胶-催吐萝芙木-降香黄檀复合生态系统中植物的生长动态及其生物量

发布时间：2018-05-07 18:55

本文选题：复合生态系统 + 橡胶　；参考：《中南林业科技大学学报》2016年01期

【摘要】：根据2个不同年龄橡胶—催吐萝芙木—降香黄檀复合生态系统样地的调查数据,采用所建立的生物量回归方程,分析了2个不同年龄复合生态系统中植物的生长动态、生物量及其分配特征。结果表明:4年生橡胶林下催吐萝芙木和降香黄檀的年均胸径生长量均显著大于7年生橡胶林下催吐萝芙木和降香黄檀的生长量,但年均高度生长量则无显著差异;在种植4.5 a后,前者的生物量分别是后者的2.86倍和2.90倍;4年生橡胶林复合生态系统的总生物量(67.49 t·hm-2)显著大于其单一橡胶林的生物量(47.06 t·hm-2),并超过7年生橡胶林复合生态系统(63.86 t·hm-2)及单一橡胶林的总生物量(60.38 t·hm-2);生物量的器官分配比例除4年生复合系统中的催吐萝芙木为茎枝根叶外,均呈现出茎根枝叶的趋势;随着橡胶年龄的增长,催吐萝芙木和降香黄檀的生长量和生物量虽呈下降的趋势,但橡胶的生物量及胶林复合生态系统的总生物量呈增长的趋势。橡胶林下催吐萝芙木和降香黄檀的种植具有提高生物量积累和碳固存的潜力和优势。
[Abstract]:Based on the investigation data of two different ages of rubber, Rosewood and red sandalwood complex ecosystem, the plant growth dynamics in two different age complex ecosystems were analyzed by using the established biomass regression equation. Biomass and its distribution characteristics. The results showed that the average annual DBH growth of Rothophora vulgaris in 4 years was significantly higher than that in 7 years, but there was no significant difference in annual height growth. After 4.5 years of cultivation, The biomass of the former was 2.86 times and 2.90 times of that of the latter, and the total biomass of the compound ecosystem was 67.49 t 路hm ~ (-2), which was significantly higher than that of the single rubber forest (47.06 t 路h ~ (-2) and 63.86 t 路h ~ (-2) of the compound ecosystem of the rubber forest for more than 7 years. The total biomass of single rubber forest was 60.38 t 路hm ~ (-2), and the organ allocation ratio of biomass was as follows: Rothophora was the stem, branch, root and leaf in the compound system of 4 years old, and the total biomass was 60.38 t 路hm ~ (-2). With the increase of rubber age, the growth and biomass of Rothophora thunbergii and Radix sandalwood decreased, but the biomass of rubber and the total biomass of compound ecosystem of rubber forest showed an increasing trend. Under the rubber forest, the cultivation of Rothophora and sandalwood has the potential and advantage of increasing biomass accumulation and carbon sequestration.
【作者单位】：中国科学院大学;中国科学院西双版纳热带植物园热带植物资源可持续利用重点实验室;中国药科大学生命科学与技术学院;
【基金】：中国科学院农业项目办公室项目(KSCX2-EW-B-12;KSCX2-YW-N-44-09);中国科学院“一三五”专项(XTBG-T03) 西双版纳州科学技术局项目(200915;YX201102)
【分类号】：S718.556

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