草地退化演替阶段羊草叶片碳氮磷化学计量学研究

doi:10.11924/j.issn.1000-6850.casb16010066

中国农学通报 ›› 2016, Vol. 32 ›› Issue (11): 73-77.doi: 10.11924/j.issn.1000-6850.casb16010066

所属专题：畜牧兽医

• 资源环境生态土壤气象 • 上一篇下一篇

草地退化演替阶段羊草叶片碳氮磷化学计量学研究

赵一嬴,李月芬,王月娇,梁硕

吉林大学地球科学学院,吉林大学地球科学学院,吉林大学地球科学学院,吉林大学地球科学学院

收稿日期:2016-01-14 修回日期:2016-01-20 接受日期:2016-01-25 出版日期:2016-04-20 发布日期:2016-04-20
通讯作者: 李月芬
基金资助:
农业部公益性行业科研专项“斯列金1 号-黄花草木樨防治土壤退化与综合开发示范试验研究”(200903031)；吉林省自然科学基金项目“基于生态化学计量学的草地退化机理研究—以大安市姜家甸草场为例”(201215017)。

C, N, P Chemometrics of Leymus chinensis Leaves During Grassland Retrogressive Succession Stages

Received:2016-01-14 Revised:2016-01-20 Accepted:2016-01-25 Online:2016-04-20 Published:2016-04-20

摘要/Abstract

摘要： C、N、P 是生物地球化学循环中的重要元素，在生态系统中占有重要地位，植物体内特别是叶片C、N、P 的生态化学计量学特征一直是生态学研究的一个热点。通过测定吉林省姜家甸草地不同退化演替阶段羊草叶片中C、N、P含量，研究了草地退化演替阶段羊草叶片生态化学计量特征。结果表明：C含量轻度退化草地最高，极严重退化草地最低；N含量极严重退化草地最高，未退化草地最低；P含量极严重退化草地最高，中度退化草地最低；C/N未退化草地最高，极严重退化草地最低；C/P 中度退化草地最高，极严重退化草地最低；N/P重度退化草地最高，未退化草地最低。未退化草地羊草受N和P共同限制，退化草地主要受P限制。生态化学计量学特征对草地不同退化演替阶段具有指示意义。

关键词: 水稻, 水稻, 免耕抛秧技术, 配套技术, 生长发育, 土壤生态效益

Abstract: Carbon, nitrogen and phosphorus are important elements in biogeochemical cycles, they play an important role in the ecosystem, especially the leaves of plants, carbon, nitrogen, the study about the ecological stoichiometry for C, N and P in the plant leaves is a hot topic of ecological field. By studying the content of C, N and P in the Leymus chinensis leave for different succession stages of grassland degradation in Jiangjiadian grassland of Jilin Province to explore the characters of ecological stoichiometry. The results showed that the maximum C content appears in lightly degraded grassland, and the minimum C content appears in the very seriously degraded grassland. However, the maximum N content appears in the very seriously degraded grassland, and the minimum C content appears in the undegraded grassland. The maximum P content appears in the very seriously degraded grassland, and the minimum P content appears in the moderate degraded grassland. The maximum value of C:N appears in the undegraded grassland, the minimum value of C:N appears in the very seriously degraded grassland. The maximum value of C:P appears in the moderate degraded grassland, the minimum value of C:P appears in the undegraded grassland. The maximum value of N:P appears in the seriously degraded grassland, the minimum value of C:P appears in the undegraded grassland. The undegraded grassland is limited by both N and P, the degraded grassland is limited by P. The ecological stoichiometry character provide useful guidance on different degradation succession Stages

中图分类号:

S154.4

赵一嬴,李月芬,王月娇,梁硕. 草地退化演替阶段羊草叶片碳氮磷化学计量学研究[J]. 中国农学通报, 2016, 32(11): 73-77.

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草地退化演替阶段羊草叶片碳氮磷化学计量学研究

C, N, P Chemometrics of Leymus chinensis Leaves During Grassland Retrogressive Succession Stages

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