[1]李海东,沈渭寿,燕守广,等.高寒河谷流动沙地生境因子变化及其对播种期的影响[J].山地学报,2013,(06):647.
　LI Haidong,SHEN Weishou,YAN Shouguang,et al.Variations of Habitat Factors on Sand Dunes in the Alpine Valley and Its Influences on the Best Sowing Period[J].Mountain Research,2013,(06):647.
点击复制

高寒河谷流动沙地生境因子变化及其对播种期的影响()
分享到：

《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2013年06期
页码:
647
栏目:
青藏高原
出版日期:
2013-01-01

文章信息/Info

Title:
Variations of Habitat Factors on Sand Dunes in the Alpine Valley and Its Influences on the Best Sowing Period
作者:
李海东;沈渭寿;燕守广;王涛;唐军;
1. 环境保护部南京环境科学研究所，江苏 南京 210042;
2. 中国环境科学研究院 地下水与环境系统工程创新基地, 北京 100012
Author(s):
LI Haidong;  SHEN Weishou;  YAN Shouguang;  WANG Tao;  TANG Jun
1. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China;
2. Research Center of Groundwater and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
关键词:
风沙化土地; 植被恢复; 生境因子; 雅鲁藏布江高寒河谷
Keywords:
Aeolian sandy land;  vegetation restoration;  habitat factors;  alpine valley of the Yarlung Zangbo River
分类号:
Q151.5,X144
文献标志码:
A
摘要:
在雅鲁藏布江中游河谷,野外观测了流动沙地植被恢复试验期间的生境因子(降水、地温、土壤水分和风沙运动),结合文献[13]所报道的2008—2011年人工模拟飞播试验结果,分析了西藏高寒河谷流动沙地生境因子变化特征及其对最佳播种期的影响,以期为该区域正在进行的风沙化土地植被恢复提供依据。结果表明:1.降水量大小及其时间分布、不同类型沙地和沙丘坡向的土壤水分状况,决定着种子发芽、出苗和生长过程中能否得到持续不断的土壤水分补给,从而保证新播植物的根系前在越冬穿过旱季的干沙层,到达土壤水分较稳定的土层而顺利越冬。2.裸露于沙丘表面的种子因高温灼烧而干瘪、开裂,丧失发芽能力,尤其是刚出土的新生芽和幼苗对日...
Abstract:
We carried out a continuous test of the field artificial seeding by choosing northern psammophyte species and native species of Tibet from 2008 to 2011, and the habitat factors including precipitation, soil temperature, soil moisture and sand movement, as well as the germination, emergence and growth processes of the testing plant species were observed simultaneously. Based on these, the best sowing period was discussed. The results showed that the germination, emergence and growth processes were affected greatly by the amount of precipitation and its time distribution, soil moisture content of different aeolian sandy land types and sand dune parts. The plant roots could grow quickly under the condition of sufficient soil moisture, pass through the dry sand bed before the dry season coming, and get in touch with the groundwater table in the deeper soil bed. Due to the high temperature of sand, the seeds exposing on the dune surface mummified, cracked in great numbers and lost the ability of germination eventually. The sprout and seedling were sensitive from sunburn, and the withering and burning phenomenon could be seen everywhere when the drought event occured, and the sprout and seedling at the height of 3 to 4.5 cm died frequently. The best sowing period was from mid June to early July, and the wind exchange was frequent during this period, the seeds sowed by the field artificial seeding could be buried naturally by sand movement. This period not only meet the demand of the germination and emergence for soil moisture, but also provide a sufficient growing season for the growth of plant size and plant roots, so that the plants could go through the winter and survive.

相似文献/References:

[1]赵成章,董小刚,石福习,等.高寒山区退耕地不同植被恢复方式下群落稳定性[J].山地学报,2011,(01):6.
　ZHAO Chengzhang,DONG Xiaogang,SHI Fuxi,et al.Community Stability under Different Vegetations Restored of Abandoned Lands in Alpine Areas[J].Mountain Research,2011,(06):6.
[2]杨忠,张信宝,王道杰,等.金沙江干热河谷植被恢复技术[J].山地学报,1999,(02):57.
[3]朱波,陈实,廖晓勇,等.陡坡耕地的开发利用与保护—— 一种农林复合模式[J].山地学报,2000,(01):37.
[4]张建辉,李勇,杨忠.云南元谋干热河谷造林区植被生长与土壤渗透性的关系[J].山地学报,2001,(01):25.
[5]张建辉,李勇,杨忠.金沙江干热河谷区人工林生长与土壤母质-母岩的关系[J].山地学报,2001,(03):231.
[6]柴宗新,范建容.金沙江干热河谷植被恢复的思考[J].山地学报,2001,(04):381.
[7]张有富,肖蔚,陈明,等.云南小江泥石流频发区干热退化山地环境劣变与植被恢复途径[J].山地学报,2001,(S1):88.
[8]沈有信,张彦东,刘文耀.泥石流多发干旱河谷区植被恢复研究[J].山地学报,2002,(02):188.
[9]李阳兵,魏朝富,李先源,等.土地利用方式对岩溶山地土壤种子库的影响[J].山地学报,2002,(03):319.
[10]李先琨,苏宗明,吕仕洪,等.广西岩溶植被自然分布规律及对岩溶生态恢复重建的意义[J].山地学报,2003,(02):129.

备注/Memo

备注/Memo:
收稿日期(Received date)：2013-02-12；改回日期(Accepted) : 2013-06-24。
基金项目（Foundation item）：国家自然科学基金（41301611），江苏省自然科学基金（BK20130103），环境保护部南京环境科学研究所中央级公益性科研院所基本科研业务专项(NIES2011)和国家环保公益性行业科研专项(200809010)资助。[This project was funded by the Natural Science Foundation of China(No.41301611),the Natural Science Foundation of Jiangsu Province(BK20130103),A Basic Special Business Fund for Research and Development for the Central Level Scientific Research Institutes, Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection (NIES2011) and National Special Public Welfare Study on Environmental Protection in China (200809010).]
作者简介（Biography）：李海东(1984-)，男，博士，助理研究员，主要研究方向为气候变化生态响应与应对、生态恢复与荒漠化防治。[Li Haidong (1984-), male, Ph D, associate researcher, mainly engaged in ecological protection and climate changes response, ecological restoration and desertification control.] E-mail:lihd2020 163.com
更新日期/Last Update: 1900-01-01