学术
岷江上游干旱河谷区臭椿抗旱性季节动态变化研究
黎燕琼[1] 郑绍伟[1] 刘向东[2] 龚良春[3] 薛乔[3] 衡理[3] 慕长龙[1]
[1]四川林业科学研究院,四川成都610081 [2]阿坝州林业局,四川马尔康624000 [3]理县林业局,四川理县623100
摘 要:
岷江上游干旱河谷区,降雨量小,蒸发量大,土壤严重干旱缺水,加之频繁的地质灾害等,使该地区成为我国最困难的造林地区之一。本试验针对杂谷脑河干旱河谷区域内近年栽植的臭椿,通过水分生理对其抗旱性的季节动态变化进行了研究,结果表明：臭椿叶片含水量、24 h失水率、水分饱和亏却度、细胞膜透性等,均随着叶片的生长逐渐降低以增强抗旱性;通过隶属（反隶属）函数法对其抗旱性动态变化进行综合评价结果为9月（3.828）〉7月（3.591）〉8月（2.945）〉5月（1.515）,6月最低,仅为1.489。[著者文摘]
文章出处:
《四川林业科技》-2008年29卷1期 -16-19页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1003-5508（2008）01-0016-04
Research on Seasonal Dynamic Ailanthus altissima in Arid Changes of Drought Resistance of Valleys of the Minjiang River
LI Yan-Qiong, ZHENG Shao-Wei, LIU Xiang-Dong, GONG Liang-chun, XUE Qiao, HENG Li, MU Chang-Long （ 1. Siehuan Academy of Forestry , Chengdu 61008 ;2. Forestry Bureau of ABa , MaerKang 62400 3. Forestry Bureau of LiXian , LiXian 623100）
Abstract:
There are 161 kin＇of arid valleys （170 km^2） in the Minjiang River. Xerophil shrubs and grasses are dominant in this area. However they play a significant role in the soil and water conservation in the watershed, and provide important reference for converting farmland to forestor grass land project as it is very difficult to grow trees in the arid valleys. Researches were conducted on drought-resistant physiological characteristics of Ailanthus altissima. The results showed that its water content, evaporation ratio, WSD, RWC decreased under the drought stress; Integrated assessment on the drought resistant index of Ailanthus altissima indicated that the integrated drought resistant index was the highest（ 3. 828） in September, followed on July （3.591）, August （2. 945） and June, and was the lowest （ only 1.489） in May.[著者文摘]
Key words:
Ailanthus altissima, Moisture-physiological, Drought-resistant, Integrated assessment
基金资助:
“十一五”科技支撑2006BAD03A03
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