[1]张增悦,姜准,李甜江,等. 毛乌素沙地中国沙棘人工林早衰原因与特点[J].西北林学院学报,2016,31(6):1-6.[doi:10.3969/j.issn.1001-7461.2016.06.01]
 ZHANG Zeng-yue,JIANG Zhun,LI Tian-jiang,et al. Causes and Features of Hippophae rhamnoides ssp.sinensis Plantation Premature Aging in Mu Us Sandland[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(6):1-6.[doi:10.3969/j.issn.1001-7461.2016.06.01]
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 毛乌素沙地中国沙棘人工林早衰原因与特点()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第6期
页码:
1-6
栏目:
出版日期:
2016-11-30

文章信息/Info

Title:
 Causes and Features of Hippophae rhamnoides ssp.sinensis Plantation Premature Aging in Mu Us Sandland
文章编号:
1001-7461(2016)06-0001-06
作者:
 张增悦1姜准1李甜江2肖智勇3李根前1*
 (1.西南林业大学,云南 昆明 650224;2.云南省林业科学院,云南 昆明 650204;3.江西省宜春市林业科学研究所,江西 宜春 33600)
Author(s):
 ZHANG Zeng-yue1JIANG Zhun1LI Tian-jiang2XIAO Zhi-yong3 LI Gen-qian1*
 (1.Southwest Foresty University,Kunming,Yunnan 650224,China;2.Yunnan Academy of Foresty,Kunming,Yunnan 650204,China;3.Yichun Research Institute of Forestry,Yichun,Jiangxi 33600,China)
关键词:
 中国沙棘毛乌素沙地人工林衰退森林土壤
Keywords:
Hippophae rhamnoides ssp.sinensis Mu Us Sand-landplantation recession forest soil
分类号:
S725.7
DOI:
10.3969/j.issn.1001-7461.2016.06.01
文献标志码:
A
摘要:
 为了解中国沙棘人工林早衰的原因与特点,对毛乌素沙地的人工林与天然林进行比较研究。结果表明,天然林林地土壤含水率、有机质、全N及速效N含量显著高于人工林,林地生产力、分株生长量也显著高于人工林,但林分密度显著低于人工林;天然林年龄结构为金字塔形,人工林则为纺锤形;在影响林地生产力和分株生长量的因素中,土壤含水率起决定性作用。可见干旱缺水、养分贫瘠、密度过大均可导致人工林早衰,其中干旱缺水是主导因素;人工林早衰的主要特点在于分株变小(寿命缩短)、林地生产力降低、林分稳定性削弱。
Abstract:
 For knowing the causes and features of the premature aging of Hippophae rhamnoides ssp.sinensis plantation,we compared natural forests with plantations in Mu Us Sandland.The results showed that in the natural H.rhamnoides ssp.sinensis forests,soil moisture content and organic matter,total nitrogen and available nitrogen contents were significantly higher than those of plantations,no significant difference was found in soil physicochemical properties.The productivity and plant growth of natural forests were obviously higher than those of plantations,but stand density was lower than plantations.The age structure of natural forest was stable and to some extent,a little improved,while plantations were in recession.Soil moisture content was crucial that affected forest land productivity and plant growth.Therefore,drought,barren,density all could lead to premature aging of plantations,drought was the dominant factor.The main features of premature aging occurring in plantations were that the ramets became smaller,which would lead to a shortened lifespan,land productivity decreased,the stand stability weakened.

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备注/Memo

备注/Memo:
 收稿日期:2016-01-20修回日期:2016-08-25
基金项目:国家自然科学基金(30371193/31070551/31570609);西南林业大学科技创新基金(C15027);云南省林学一流学科建设项目(51600625)。
作者简介:张增悦,女,硕士,研究方向:生态学。 E-mail:18206784173@163.com
*通信作者:李根前,男,教授,博士生导师,研究方向:森林培育学与森林生态学。E-mail:15825290016@163.com
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