ZENG Yue-e,QIN Fu-cang,YUE Yong-jie.Analysis on Plant Composition and Diversity of Hippophae Forest in Sandstone Areas of Jungar Banner[J].Northern Horticulture,2013,37(22):98-101.
准格尔旗砒砂岩区沙棘林下草本植物组成及多样性分析
- Title:
- Analysis on Plant Composition and Diversity of Hippophae Forest in Sandstone Areas of Jungar Banner
- 文章编号:
- 1001-0009(2013)22-0098-04
- Keywords:
- Sandstone areas; hippophae; plant diversity; Jungar
- 分类号:
- S 718. 54
- 文献标志码:
- A
- 摘要:
- 沙棘对砒砂岩区的水土保持和生态环境建设方面发挥着积极作用，现以林龄为2～10 a的沙棘林为研究对象，对其林下草本植物组成及其多样性进行了研究。结果表明：随着沙棘林林龄的增加，其林下植物种类呈先增加后减少的趋势。不同林龄的草本植物种类呈现出8 a生（20种）>6 a生（19种）>4 a生（17种）>10 a生（10种）>2 a生（8种）。2 a生沙棘林下的草本层主要是1 a生、旱生植物，优势种为地蔷薇，其重要值达到30.1827；4 a生沙棘林下植物优势种为猪毛菜和亚洲百里香，其重要值达到10.7481和10.4768;8 a生沙棘林下植物优势种为阿尔泰狗娃花和亚洲百里香，其重要值达到10.3416和10.1714，10 a生沙棘林下植物优势种为亚洲百里香，其重要值为26.1437，优势十分明显。不同林龄的沙棘林下草本层的植物的Margalef丰富度指数、Pielous均匀度指数、Shannon-Weiner多样性指数和Simpson多样性指数均表现为随着林龄的增加先增加后减少的趋势。
- Abstract:
- The hippophae plays an active role in developing water and soil conservation and ecological environment construction in sandstone areas,taking the 2~10 a hippophae forest as the test material,plant composition and diversity of hippophae forest were studied.The result showed that understory plant species showed increasing at first and then decreasing as the age of hippophae forest increased.The plant species presented that the 8 a (20 species)>6 a (19 kinds)>4 a (17 species)>10 a (10 species)>2 a (8 species).The understory plant species of 2 a hippophae forest were mainly annual plant and xerophytes,the dominant species was Chamaerhodos erecta,the important value reached 30.1827;the dominant species were Salsola collina and Thfmus serphllum of 4 a hippophae forest,and the important values reached 10.7481 and 10.4768;8-year-old sea buckthorn understory plant the dominant species were Heteropappus altaicus and Thfmus serphllum of 8 a hippophae forest,the important values reached 10.3416 and 10.1714,the dominant species was Thfmus serphllum of 10 a hippophae forest,its important value was 26.1437 with obvious predominance.Margalef richness index,Pielous evenness index,Shannon-Weiner diversity index and the Simpson diversity index of hippophae forest showed a decline after the first growing trend.
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备注/Memo
第一作者简介：曾月娥（1988-），女，硕士，研究方向为土地资源管理与水土保持。E-mail：zengyueehappy@126.com.
责任作者：秦富仓（1966-），男，博士，教授，硕士生导师，研究方向为土地资源管理与水土保持。E-mail：qinfc@126.com。
收稿日期：2013-06-19