Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2019, Vol. 27 ›› Issue (1): 15-21.DOI: 10.11733/j.issn.1007-0435.2019.01.003

Previous Articles     Next Articles

Calorific Values of Grassland Plant Population and Functional Groups in the Agro-pastoral Ecotone of Inner Mongolia and Liaoning Province Border

TAN Yan-ci1, BAO Ya-jing1, LI Zheng-hai1, ZHANG Jing1, LIANG Jie1, LV Na1, YE Jia-qi2, LIU Chong1, XU Yuan1   

  1. 1. Dalian Minzu University, Dalian, Liaoning Province 116600, China;
    2. Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region 010021, China
  • Received:2018-10-17 Revised:2018-12-24 Online:2019-02-15 Published:2019-04-13

蒙辽农牧交错区草地植物种群和功能群热值研究

谭嫣辞1, 鲍雅静1, 李政海1, 张靖1, 梁杰1, 吕娜1, 叶佳琦2, 刘翀1, 徐媛1   

  1. 1. 大连民族大学, 辽宁 大连 116600;
    2. 内蒙古大学, 内蒙古 呼和浩特 010021
  • 通讯作者: 鲍雅静,E-mail:byj@dlnu.edu.cn
  • 作者简介:谭嫣辞,女,内蒙古赤峰人,硕士研究生,主要从事草地生态学研究。E-mail:245396548@qq.com
  • 基金资助:
    国家重点研发计划（2016YFC0500707，2016YFC050050302）；中央高校基本科研业务费专项资金（0113-20000101）；辽宁省科学事业公益研究基金（2015003010）资助

PDF

Abstract: Agro-pastoral ecotone is an important ecological barrier in China,and its ecological environment problems are becoming increasingly prominent. In this study,61 species of plants in 27 grassland plots in the agro-pastoral ecotone of Inner Mongolia and Liaoning border were collected for calorific value analysis under the random sampling condition. The changes of calorific value of plants in different types of functional groups were explored to provide scientific data and research support for energy fixation and rational use of grassland resources in the agro-pastoral ecotone. The results showed that:The average calorific value of 61 species was 17.14 KJ·g-1. Among them,Salsola collina had the lowest calorific value (12.82 KJ·g-1),the caloric value of Polygala tenuifolia was the highest (20.07 KJ·g-1),and the total calorific value was normal distribution. Comparing the caloric values of different life-type functional groups,the caloric value of annuals and biennials was significantly lower than perennial grasses and shrubs (P<0.05),which had no significant difference with sub-shrubs and perennial forbs. There was no significant difference among perennial grasses,shrubs,perennial weeds and semi-shrubs (P>0.05). There was no significant difference in caloric value between different water ecological functional groups (P>0.05). The plant caloric mean value of the Xero-mesophytes was slightly lower than other groups. There was no significant difference in calorific value among Liliaceae,Leguminosac,Gramineae,Compositae and Rosaceae,and the caloric value of Chenapodiaceae was significantly lower than other families (P<0.05). There was a significant positive correlation between plant calorific value and carbon content (P<0.05).

Key words: Agro-pastoral ecotone at Inner Mongolia and Liaoning province border, Life type, Water ecological type, Calorific Value

摘要： 本研究通过对蒙辽农牧交错区的61种植物进行热值分析，分析了不同功能群热值的变化，以期为农牧交错区草地能量固定及资源合理利用提供科学数据和理论支撑。研究结果表明：61种植物的热值平均值为17.14 KJ·g-1。不同生活型功能群比较，一二年生草本热值显著低于多年生禾草和灌木，与半灌木和多年生杂类草均无显著差异。多年生禾草、灌木、多年生杂类草和半灌木之间无显著差异。不同水分生态功能群之间的热值均无显著差异。旱中生植物的热值平均值略低于其他组。百合科（Liliaceae）、豆科（Leguminosac）、禾本科（Gramineae）、菊科（Compositae）、蔷薇科（Rosaceae）之间热值无显著差异，藜科（Chenapodiaceae）热值显著低于其他科。植物热值与碳含量呈显著正相关关系。

关键词: 蒙辽农牧交错区, 生活型, 水分生态类型, 热值

CLC Number: