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| 1 | 3种荒漠植物群落物种组成与丰富度的季节变化及地上生物量特征显示文摘对古尔班通古特沙漠36个蛇麻黄群落、28个白茎绢蒿群落及13个准噶尔沙蒿群落物种组成与丰富度的季节变化及现存生物量的研究表明,初夏时蛇麻黄和白茎绢蒿群落的科数和物种数均高于准噶尔沙蒿群落,而秋季时3个群落科、种数均明显较少。初夏时期,各群落均有5种植物生活型,其中短命植物种类最多;而秋季短命和类短命植物消失,仅剩3种生活型,以一年生草本的种类最多。3种群落的物种丰富度也表现为夏季高于秋季;夏季时,准噶尔沙蒿群落物种丰富度显著低于蛇麻黄和白茎绢蒿群落,而秋季时三者差异均不显著;各群落不同季节的物种丰富度间均显著正相关,体现了群落结构的稳定性。夏季草本层生物量(0.67~6.99g/m2)稍大于秋季(0.89~4.20g/m2)。秋季3类群落总地上生物量分别为73.19,85.38和54.21g/m2,其中建群种分别占86.03%,84.07%和89.65%,而草本生物量均小于5%。夏季和秋季草本植物丰富度与生物量间均表现为显著的'单峰型关系',表明中等生物量时丰富度最高。尽管研究群落内草本层生物量较低,但时间上交错出现的短营养期和长营养期草本植物对维持荒漠生态系统物种多样性及地表稳定均具有重要意义。总体上,与中国同纬度的其他荒漠相比,本研究区3类群落物种组成和丰富度具有明显的季节变化特征,但表现出较低的生物量。 | 陶冶 张元明 | 2011 | 草业学报2011，20，6： | 36 |
| 2 | Vegetation-environment Relationships Between Northern Slope of Karlik Mountain and Naomaohu Basin,East Tianshan Mountains显示文摘Based on data from 22 sample plots and applying the Canonical Correspondence Analysis (CCA),this paper discusses the vegetation-environment relationships between the northern slope of Karlik Mountain and Naomaohu Basin,which is situated in the easternmost end of the Tianshan Mountains,Xinjiang Uygur Autonomous Region,China.For the zonal vegetation,community diversity of mountain vegetation is higher than that of the desert vegetation due to environmental factors.The CCA ordination diagram revealed that the composition and distribution of vegetation types are mainly determined by altitude,soil pH and soil salt content.With increasing elevation,the soil pH and total salt content decrease but the contents of soil organic matter,soil water,total nitrogen and total phosphorus increase gradually.In the CCA ordination diagrams,the sample plots and main species can be divided into five types according to their adaptations to the environmental factors.Type I is composed of desert vegetation distributed on the low mountains,hills,plains and deserts below an elevation of 1900 m;type II is distributed in the mountain and desert ecotone with an elevation of 1900-2300 m,and includes steppe desert,desert steppe and wetland meadow;type III is very simply composed of only salinized meadow;type IV is distributed above an elevation of 2300 m,containing mountain steppe,meadow steppe,subalpine meadow and alpine meadow;type V only contains salinized meadow.The results show that with increasing elevation,species combination changes from the xerophytic shrubs,semi-shrubs and herbs distributed in the low altitude zone with arid climate to the cold-tolerant perennial herbs growing in the high altitudinal zone with cold climate. | ZHANG Haiyan QIAN Yibing WU Zhaoning WANG Zhongchen | 2012 | Chinese Geographical Science2012，22，3： | 9 |
| 3 | Vegetation distribution pattern along altitudinal gradient in subtropical mountainous and hilly river basin, China显示文摘植被分发模式的知识是很重要的。他们与地形学和气候的关系通过地理上加权的回归(GWR ) 被探索在一个副热带的多山、多山的区域的框架,在中国的福建的 Minjiang 河盆。在 2010 年 12 月 9 日获得的 HJ-1 卫星图象被利用, NDVI 索引是计算的代表植被新鲜的范围。合适的分析单位基于小亚盆和高度的乐队通过分离被完成。结果比的显示 GWR 模型是更有力的在解释植被环境的关系的平常的线性最少的平方(OLS ) 回归,由更高调整的 R2 和更低的 Akaike 信息标准价值显示了。在一个方面上, OLS 分析在植被分发上从举起和斜坡的参数揭示了主导的积极影响。在另外的方面上, GWR 分析显示空间地,地形学的参数与植被分发有一种很复杂的关系,作为环境因素,植被作文和也人为的影响的各种各样的联合的结果。举起和斜坡的影响通常减少了,从对将近零强烈积极,与增加高度和斜坡。特殊,在 NDVI 和举起或斜坡之间的系数的很快速的变化在相对扁平、低的区域被观察。这份报纸证实通过 GWR 的框架的非静止的分析能在副热带的多山、多山的区域导致植被分发的更好的理解。与 GWR 框架相结合的建议规模选择方法将在处理两个上提供一些指南,这被希望空间(水平)并且高度(垂直)在数据集的 non-stationarity ,并且它能容易在在另外的多山、多山的河盆和相关研究描绘植被分发模式被使用。 | QIU Bingwen ZENG Canying CHEN Chongcheng ZHANG Chungui ZHONG Ming | 2013 | Journal of Geographical Sciences2013，23，2： | 7 |
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