长期模拟增温对矮嵩草草甸土壤理化性质与植物化学成分的影响

生态学杂志

长期模拟增温对矮嵩草草甸土壤理化性质与植物化学成分的影响

杨月娟^1,4,周华坤^1**,姚步青¹,王文颖²,董世魁³,余欣超^1,4,赵新全¹,张灏⁵

(¹中国科学院西北高原生物研究所，西宁 810008； ^2青海师范大学，西宁 810008； ^3北京师范大学，北京 100875； ⁴中国科学院大学，北京 100049； ⁵山西农业大学，山西太谷 030801)

出版日期:2015-03-10 发布日期:2015-03-10

Effects of long-term simulated warming on soil physicochemical properties and plant chemical components of Kobresia humilis meadow.

YANG Yue-juan^1,4, ZHOU Hua-kun^1**, YAO Bu-qing¹, WANG Wen-ying², DONG Shi-kui³, YU Xin-chao^1,4, ZHAO Xin-quan¹, ZHANG Hao^5

(¹ Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810008, China; ² Qinghai Normal University, Xining 810008, China; ³Beijing Normal University, Beijing 100875, China; ⁴ Graduate University of Chinese Academy of Sciences, Beijing 100049; ⁵Shanxi Agricultural University, Taigu 030801, Shanxi, China)

Online:2015-03-10 Published:2015-03-10

摘要/Abstract

摘要：

采用国际冻原计划(ITEX)长期模拟增温试验装置，研究了退化和未退化的矮嵩草草甸上植物化学成分(粗灰分、中性洗涤纤维、酸性洗涤纤维、木质素、粗脂肪、粗蛋白和无氮浸出物)含量、土壤环境因子(速效氮、速效钾、速效磷、全氮、全磷、全钾、有机质和土壤含水量)的变化及其相互关系。结果表明：长期模拟增温明显影响了土壤理化性质和3个功能群植物的化学成分含量(P<0.05)；在退化的矮嵩草草甸上长期模拟增温，两者存在明显的交互效应(P<0.05)，增温增加了植物可直接利用的土壤养分含量，但土壤中有机质、全氮、全磷、全钾和含水量均低于其各自对照，增温降低了优良牧草(禾草和莎草)粗脂肪、粗蛋白和无氮浸出物的含量，增加了粗灰分、中性洗涤纤维、酸性洗涤纤维和木质素含量，降低了牧草消化率；长期模拟增温条件下，土壤理化性质对植物化学成分的贡献大小依次是：速效氮>有机质>含水量>速效钾。典型对应分析表明，长期模拟增温进一步巩固了未退化矮嵩草草甸禾草类和莎草类优势牧草的地位，杂类草逐渐衰退；而在退化矮嵩草草甸样地上长期模拟增温，群落优势种的优势度下降，加剧了草地退化。

关键词: 探测率, 物种多样性, 优化, 渔业资源, 样本量

Abstract: By employing the longterm simulation temperature experimental test device recommended by the International Tundra Experiment (ITEX), the responses of plant chemical components (crude ash, neutral detergent fiber, acid detergent fiber, lignin, crude fat, crude protein and nitrogen free extract) and soil physicochemical properties (available nitrogen, available potassium, available phosphorus, total nitrogen, total phosphorus, total potassium, organic matter, and moisture content) to warming on degraded and undegraded Kobresia humilis meadows were studied. The results showed that long-term simulated warming significantly affected soil physicochemical properties, and plant chemical components of three functional groups (P<0.05). There were obvious interactive effects between plant chemical components and soil physicochemical properties in degraded K. humilis meadow under long-term simulated warming (P<0.05). The simulated warming increased soil available nutrients which could be directly used by plants, but decreased soil organic matter, total nitrogen, total phosphorus, total potassium and moisture contents in the degraded meadow, compared with the control. Meanwhile, warming decreased the contents of crude fat, crude protein and nitrogen free extract of highquality herbage (Gramineae and Cyperaceae), while increased the contents of some indigestible ingredients such as crude ash, neutral detergent fiber, acid detergent fiber, lignin, consequently, resulting in a decrease in ruminant assimilation ability. Under long-term simulated warming conditions, the contributions of soil environmental factors to plant chemical composition were as follows: available nitrogen > organic matter > moisture content > available potassium. Canonical correspondence analysis showed that longterm warming further increased the advantages of Gramineae and Cyperaceae species in the nondegraded K. humilis meadow, while forbs gradually declined. In the degraded meadow, the dominance of dominant species declined, intensifying the degradation of grassland.

Key words: fishery resources, probability of detection, sample size, diversity of species, optimization

杨月娟1,4,周华坤1**,姚步青1,王文颖2,董世魁3,余欣超1,4,赵新全1,张灏5. 长期模拟增温对矮嵩草草甸土壤理化性质与植物化学成分的影响[J]. 生态学杂志.

YANG Yue-juan1,4, ZHOU Hua-kun1**, YAO Bu-qing1, WANG Wen-ying2, DONG Shi-kui3, YU Xin-chao1,4, ZHAO Xin-quan1, ZHANG Hao5. Effects of long-term simulated warming on soil physicochemical properties and plant chemical components of Kobresia humilis meadow.[J]. cje.

[1]	于涛, 朱丽, 魏岩, 祝燕. 北京东灵山暖温带落叶阔叶林下草本物种多样性及其动态 [J]. 生态学杂志, 2024, 43(4): 1036-1046.
[2]	黎秋雨, 柴军发, 蒲艳丽, 马文田, 张晓莉, 王芳, 贾彦霞. 雷斯青霉F-1发酵培养基优化及对枸杞木虱的毒力测定 [J]. 生态学杂志, 2024, 43(3): 815-822.
[3]	李小鹏, 卜元坤, 陈佳卉, 王永平, 周建云, 李卫忠. 桥山林区辽东栎次生林生态位及多样性特征与林分分布格局的关系 [J]. 生态学杂志, 2024, 43(2): 415-423.
[4]	秦笠, 王宁, 陈佳敏, 高鸿图. 不同恢复方式铁杆蒿群落土壤有机质和团聚体特征 [J]. 生态学杂志, 2023, 42(6): 1348-1354.
[5]	周媛, 唐密, 陈娟, 黎贝. 基于形态学空间格局分析与图谱理论的成都市绿地生态网络优化 [J]. 生态学杂志, 2023, 42(6): 1527-1536.
[6]	李雨晗, 丁彦芬, 张畅为, 张强. 南京外秦淮河河岸带草本花卉群落分类与排序 [J]. 生态学杂志, 2023, 42(5): 1064-1073.
[7]	李云霞, 王晨旭, 刘焱序. 基于生态系统服务簇分区的土地利用多目标优化——以巴彦淖尔市为例 [J]. 生态学杂志, 2023, 42(5): 1205-1213.
[8]	谢川, 陈俊华, 谢天资, 刘雅琦, 李羽洁, 刘一丁, 慕长龙. 川中丘陵区人工柏木林林下群落谱系结构 [J]. 生态学杂志, 2023, 42(4): 804-811.
[9]	张加涛, 张雅荣, 刘亚玲, 索明春, 徐柱文. 不同恢复措施对内蒙古乌拉特中旗荒漠草原植物群落的影响 [J]. 生态学杂志, 2023, 42(4): 828-837.
[10]	李晨笛, 杨小波, 李东海, 史建康, 赵俊福, 李龙, 陈琳, 张培春, 田璐嘉. 海南中部山区天然林群落结构与多样性变化 [J]. 生态学杂志, 2023, 42(3): 513-523.
[11]	李岩, 何兴元, 尚佰晓, 陈玮, 张粤, 王艳林. 辽宁浑河源自然保护区蕨类植物组成及物种多样性 [J]. 生态学杂志, 2023, 42(10): 2434-2440.
[12]	拓行行, 李玉华, 俞瀚林, 李美慧, 晏昕辉, 杨梦茹, 王子临, 温仲明, 李伟. 宁南山区华北落叶松林下草本层群落特征及其影响因素 [J]. 生态学杂志, 2023, 42(10): 2449-2458.
[13]	苏天成, 向琳, 陈聪琳, 喻静, 张瀚文, 李婧, 王琴, 王芳, 郝建锋. 营林措施对成都绕城高速路域杨树人工林物种多样性和土壤理化性质的影响 [J]. 生态学杂志, 2023, 42(1): 58-66.
[14]	陈婉, 袁思佳, 刘威, 陈明杰, 李鹏, 胡超超, 常青. 江苏阜宁不同生境鸟类群落谱系和功能多样性 [J]. 生态学杂志, 2022, 41(9): 1746-1754.
[15]	苗纯萍, 何欢, 陈玮, 胡远满, 刘淼. 城市绿地三维建筑格局对大气污染物的影响研究进展 [J]. 生态学杂志, 2022, 41(8): 1628-1634.