干旱区生态环境知识资源中心(Arid): 孔雀河流域天然植物多样性与地下水关系

Arid

	孔雀河流域天然植物多样性与地下水关系
其他题名	The Relationship between Plant Diversity and Groundwater in the Kongquehe River Basin
	石瑞花 1; 李霞 2; 尹业彪 1; 董新光 3
ISSN	1007-7588
出版年	2009
卷号	31 期号:9 页码:1553-1560
中文摘要	根据孔雀河畔59块样地的调查数据.应用重要值计算了天然植物多样性指数、均匀度指数、丰富度指数、优势度指数,并分析了流域天然植物多样性与地下水的关系.结果表明:①孔雀河上游至下游,土壤pH值增加,在土壤pH<8.56时,植物丰富度指数、Simpson指数、Shannon-Wiener指数、Pielou指数增加,植物种类、数目及平均盖度增加,长势良好,反之则降低;②随离河距离增加,地下水埋深和土壤盐分含量增加,离河50m处,植物多样性指数较大,离河300m处植物多样性指数较低,离河650m处由于有人工灌溉,多样性指数又较大;③地下水埋深、土壤盐分、土壤pH值是影响孔雀河畔植物多样性变化的主导因素,地下水埋深<3.6m、土壤pH值<8.56是适合天然植物生长的双重临界指标,低地下冰埋深、高土壤pH值和重度盐渍化是植物多样性低的诱因,对下游河道进行间歇性输水和对周边有天然植物分布的农田适时大水漫灌,将有利于河畔脆弱生态系统的保护.
英文摘要	The Kongquehe River is located on the southern edge of Taklimakan Desert, where the ecological environment is fragile. There have been some studies on the relationship between development and utilization of water resources and ecological environment in the Kongquehe River Basin, but the study and analysis on the relationship between natural plant diversity, the depth of groundwater and soil salinity are much fewer. In this research, sample strips are set up every 5km along the (vertical) Kongquehe River in the distribution area of natural vegetation. They are 50m, 300m and 650m vertically away from the river and a 30 m * 30 m survey plot is set up in each sample strip. According to the investigation data from 59 of the experiment plots in the Kongquehe River Basin, a series of indices, including natural plant diversity, evenness, richness and dominance are calculated by using important values and the relationship between the natural plant diversity and groundwater is also analyzed. The results show that: 1) from upper stream to lower reaches of the Kongquehe River, soil pH demonstrates an increasing trend; and when soil pH is lower than 8.5, not only do the richness index, Simpson index, Shannon-Wiener index and Pielou index of plants increase, but plant species, quantity and average coverage also increase, indicating that plants can grow better below this pH level. On the contrary, the diversity of plants largely reduces and some begin to die. 2) The longer the vertical distance is from the center of the river, the higher the groundwater level and soil salinity exhibits. The diversity of plants increase at both 50m and 650m away from the river but it decreases at 300m away. 3) Groundwater level, soil salinity and soil pH play dominant roles in the changes of plant species and diversity in the Kongquehe River Basin. The two crucial targets for groundwater level and soil pH are below 3.6m and 8.56 respectively, so that plant can grow properly. In conclusion, low groundwater level, high soil pH and severe soil salinization are the cause for decreasing diversity of natural plant. It is suggested that to protect the fragile ecosystem in the Kongquehe River Basin, it can be beneficial to combine transferring water to downstream and irrigating the farmlands near the river channels by flood.
中文关键词	多样性指数 ; 地下水埋深 ; 土壤盐分 ; 土壤pH ; 孔雀河流域
英文关键词	Diversity Index Groundwater level Soil salinity Soil pH The Kongquehe River Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3708349
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224643
作者单位	1.新疆农业大学林学院, 乌鲁木齐, 新疆 830052, 中国; 2.新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国; 3.新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	石瑞花,李霞,尹业彪,等. 孔雀河流域天然植物多样性与地下水关系[J]. 新疆农业大学,2009,31(9):1553-1560.
APA	石瑞花,李霞,尹业彪,&董新光.(2009).孔雀河流域天然植物多样性与地下水关系.,31(9),1553-1560.
MLA	石瑞花,et al."孔雀河流域天然植物多样性与地下水关系".31.9(2009):1553-1560.