| 生物土壤与生态 |
|
|
|
|
| Seed Germination and Seedling Population Dynamic of Two Annual Plants during Sand Land Restoration Process |
| HE Yu-hui, ZHAO Ha-lin, LIU Xin-ping, ZHANG Tong-hui |
| Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
|
|
|
|
Abstract Setaria viridis and Corispermum marocarpum are two familiar annual plants in Horqin Sand Land, and the two plant species play a very important role in sand land restoration process. In this study, seed germination and seedling population dynamic of the two plant species were studied by fixed natural quadrats method. The results showed that the germination number of the two plants in different stage of sand land restoration changed with season and site, and the seed germination and seedling survival were strongly dependent on precipitation, and the germination number of two plants in present year increased with sand land fixation. The monthly germination ratios of the two plants decreased from April to August, but most of S. viridis seed germinated during May to June. The two plants germinated in patches. There was some hysteresis for the response of S. viridis germination to precipitation compared to C.marocarpum. The suitable temperature for S. viridis germination was higher than for C. marocarpum. There were C-pattern survival curves for S. viridis and C.marocarpum seedling, and this implied that their life strategy belongs to r-strategy.
|
|
Received: 08 October 2009
Published: 20 November 2010
|
|
|
[1]刘志民,蒋德明,高红英,等．植物生活史繁殖对策与干扰的关系[J].应用生态学报,2003,14(3):418-422.
[2]李雪华,李晓兰,蒋德明,等.干旱半干旱荒漠地区一年生植物研究综述[J].生态学杂志,2006,25(7): 851-856.
[3]赵哈林,赵学勇,张铜会,等.沙漠化的生物过程及退化植被的恢复机理[M].北京:科学出版社,2007:119-123.
[4]Guo Q F,Rundel P W,Goodall D W.Horizontal and vertical distribution of desert seed banks:Patterns, causes, and implications[J].Journal of Arid Environments,1998,38(3):465-478.
[5]梁存柱,王炜,朱宗元,等.荒漠区一年生植物层片的组织格局与生态适应模式[J].干旱区资源与环境,2002,16(1):77-83.
[6]蒋德明,刘志民,寇振武.科尔沁沙地荒漠化及恢复研究的展望[J].应用生态学报,2002,13(12):1695-1698.
[7]中国科学院宁夏和内蒙古植被考察队.内蒙古植被[M].北京科学出版社,1985.
[8]Grime J P.Plant Strategies,Vegetation Processes,and Ecosystem Properties[M].Chichester:John Willey & Sons,2001.
[9]Mistro D C,Rodrigues L A D,Schmid A B.A mathematical model for dispersal of an annual plant population with a seed bank[J].Ecological Modeling,2005,188:52-61.
[10]李雪华,蒋德明,刘志民,等.温带半干旱地区一年生植物种子的萌发特性[J].生态学报,2006,26(4):1194-1199.
[11]张景光,周海燕,王新平,等.沙坡头地区一年生植物的生理生态特性研究[J].中国沙漠,2002,22(4):350-353.
[12]龙利群,李新荣.土壤微生物结皮对两种一年生植物幼苗存活和生长的影响[J].中国沙漠,2003,23(6):656-660.
[13]赵哈林,大黑俊哉, 李玉霖,等.科尔沁沙质草地植物群落的放牧退化及其自然恢复过程[J].中国沙漠,2009,29(2):229-235.
[14]王宗灵,徐雨清,王刚.沙区有限降水制约下一年生植物种子萌发与生存对策研究[J].兰州大学学报(自然科学版),1998,34(2):98-103.
[15]张景光,李新荣,王新平,等.沙坡头地区固定沙丘一年生植物小画眉草种群动态研究[J].中国沙漠,2001,21(3):232-235.
[16]黄忠良,彭少麟,易俗.季风常绿阔叶林幼苗定居的影响因素的研究[J].热带亚热带植物学报,2001,9(2):123-128.
[17]王兮之,张景光,施溯筠,等.人工固沙区一年生植物小画眉草的竞争调节[J].中国沙漠,2001,21(3):240-243.
[18]徐彩琳,李自珍.荒漠一年生植物小画眉草的种群动态调节与模拟[J].西北植物学报,2002,22(6):1415-1420.
[19]Jennifer A,Dunne V,Thomas P.Species-mediated soil moisture availability and pathy eatablishment of Pseudotsuga menziesii in chaparral[J].Oecologia,1999,119:36-45.
[20]陶建平,钟章成.不同环境中四川大头茶幼苗的发生及幼苗消亡过程的研究[J].西南师范大学学报(自然科学版),1997,22(3):249-256.
[21]尚玉昌,蔡晓明.普通生态学(上册)[M].北京:北京大学出版社,1992.
[22]戈峰.现代生态学[M].北京:科学出版社,2002:104-124. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2010, Vol. 30 
