[1]王红霞,温仲明,高国雄,等.黄土丘陵区刺槐人工林与乡土植物叶片和细根功能性状比较研究[J].水土保持研究,2016,23(01):1-7.
　WANG Hongxia,WEN Zhongming,GAO Guoxiong,et al.Comparative Studies on Plant Functional Traits of Leaf and Fine Root Between Robinia pseudoacacia and Local Plant Community in Hilly-Gully Region of the Loess Plateau, China[J].Research of Soil and Water Conservation,2016,23(01):1-7.
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黄土丘陵区刺槐人工林与乡土植物叶片和细根功能性状比较研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年01期 页码: 1-7 栏目: 出版日期: 2016-02-28
Title:
Comparative Studies on Plant Functional Traits of Leaf and Fine Root Between Robinia pseudoacacia and Local Plant Community in Hilly-Gully Region of the Loess Plateau, China
作者:
王红霞1, 温仲明1,2,3, 高国雄1,2, 戚德辉2, 郭茹3, 杨士梭1
1. 西北农林科技大学 水土保持研究所, 陕西 杨凌 712100;
2. 西北农林科技大学 资源环境学院, 陕西 杨凌 712100;
3. 中国科学院 教育部 水土保持与生态环境研究中心, 陕西 杨凌 712100
Author(s):
WANG Hongxia1, WEN Zhongming1,2,3, GAO Guoxiong1,2, QI Dehui2, GUO Ru3, YANG Shisuo1
1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China
关键词:
刺槐林; 乡土植物群落; 植物功能性状; 黄土丘陵区; 适应策略
Keywords:
plant functional traits; Robinia pseudoacacia; local plant community; hilly Loess Plateau; adaptive strategies
分类号:
Q948
摘要:
植物功能性状是表征植物与环境关系的重要媒介。不同种群间功能性状的差异直接决定其竞争优势，并决定群落的结构和功能，影响整个群落的演替与发展。以黄土丘陵区森林草原带不同立地环境下的刺槐林和乡土植物群落为研究对象，比较二者功能性状随立地环境的变化，进而阐明其对不同环境的适应策略。结果表明：（1）同一坡向，刺槐林和乡土植物群落的叶N含量、根C含量、根N含量、比叶面积、叶组织密度及比根长之间有显著性差异（p < 0.05），而根P含量、根组织密度只在阴坡上有显著性差异（p < 0.05）。除叶组织密度、根组织密度、根P含量外，刺槐其他各功能性状值均高于乡土植物群落。在同一坡位，刺槐林叶C含量、叶N含量和根C含量、根N含量、比叶面积、比根长整体上显著高于乡土植物群落（p < 0.05）；（2）刺槐林的土壤C含量、土壤P含量在阴阳坡上均低于乡土植物群落，阳坡土壤N含量高于乡土植物群落，阴坡上则相反；在不同坡位上，两者的土壤C含量有显著性差异（p < 0.05）；（3）刺槐林和乡土植物群落5 m的土壤含水量变化基本一致。刺槐林下土壤含水量低于乡土植物群落。在干旱贫瘠的环境中，刺槐林具有较高的叶养分含量、根养分含量、比叶面积和比根长，具备较强的水分和养分竞争能力；而乡土植物群落具有较小的比叶面积、较大的叶组织密度和根组织密度，虽然可以较好地维持体内水分和养分的平衡，形成对环境的有效适应，但相比刺槐水分和养分竞争能力较弱。因此，在黄土丘陵区植物恢复重建中，要充分考虑物种对环境的适应性及其对生长的影响，要维持物种适应环境与健康生长间的平衡。
Abstract:
Plant functional trait is an important medium to express the relationships between plants and environment. The difference in functional traits among different species decides their competitiveness in a community, affecting the structure, function and development of the community. We selected artificial forest of Robinia pseudoacacia and local plant community in forest-steppe zone in hilly-gully region in Loess Plateau, and compared the differences of the functional traits between Robinia pseudoacacia and local plant community under different site conditions and clarified their adaptive strategies to local environment. The results showed that: (1) within the same slope aspect, there was a significant difference in the nitrogen content of leaf, carbon and nitrogen contents of root, specific leaf area, leaf tissue density and specific root length between Robinia pseudoacacia and local plant community (p < 0.05) while the phosphorous content of root and the root tissue density showed significant difference only in the north-facing slope (p < 0.05), the function of man-made forest of Robinia pseudoacacia character values was higher than the local plant community (except leaf tissue density, root tissue density and phosphorus content of root, under the same slope position, the carbon and nitrogen contents, specific leaf area and specific root length of Robinia pseudoacacia were significantly higher than those of the local plant community; (2) the soil carbon and nitrogen contents of Robinia pseudoacacia plantation were lower than those of the local plant community in south- and north-facing slopes, and the soil phosphorus content was higher than that of the local plant communities in the south-facing slope, and opposite in north-facing slope, the soil carbon, nitrogen, phosphorus contents of Robinia pseudoacacia plantation and local plant community between slope positions were not significantly different(p > 0.05), under different slope positions, only soil carbon content of Robinia pseudoacacia plantation and local plant community showed significant difference (p < 0.05); (3) soil moisture content of Robinia pseudoacacia plantation is lower than local plant community. In the arid environment, Robinia pseudoacacia had the higher leaf and root nutrients, and higher SLA and SRL, showing a higher competitive ability for soil water and nutrient use. Local plant community had smaller specific leaf area, larger leaf and root tissue density to maintain the balance of water and nutrients, forming adaptive strategies to local environment. However, local plant community had the lower competitiveness for water and nutrients compared with Robinia pseudoacacia. Therefore, we should fully consider the adaptability of species to the environment and effect of the adaptability on species growth, the balance between the species adaptability to environment and their health growth should be maintained in vegetation restoration in the loess hilly-gully region.

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备注/Memo

收稿日期:2015-09-17;改回日期:2015-09-30。
基金项目:国家自然科学资助项目（41271297）；中国科学院重要方向项目（KZCX2-EW-406）
作者简介:王红霞(1988-),女,山西省临汾人,硕士研究生,主要从事植物功能生态学方面的研究。E-mail:1096352712@qq.com
通讯作者:高国雄(1969-),男,陕西省清涧县人,博士,副教授,主要从事水土保持工程方面的研究。E-mail:ggx@nwsuaf.ed.cn;温仲明(1969-),男,陕西省定边人,博士,副研究员,主要从事植物生态恢复方面的研究。E-mail:zmwen@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01