研究了七星岩风景区内的植物景观空间,通过实地调研分析法、选取空间样方和植物营造空间的典型案例分析方法,对样方中植物的观赏性因子进行调查,分析了七星岩植物空间总体布局、典型七星岩植物空间类型和典型植物景观组合空间的结构关系。最后,总结出具有典型的岭南地域特征的七星岩植物景观空间的特点。

The Plant landscaPe sPace in Qixingyan scenic area was studied through field research a-nalysis,selecting the sPatial Plots and creating a sPatial by Plants tyPical cases analysis method. Or-namental characteristics were carried on detail investigation,and the structure of the overall layout, the tyPical tyPes of Plant sPace and the tyPical combination of structural relationshiPs Plant landscaPe sPace were analyzed. The characteristics of scenic area Plant landscaPe sPace in Qixingyan were sum-marized.

作为森林生态系统的重要组成部分,林下植被及其残体的分布受到林冠层的影响,但迄今有关林窗对林下植被和残体生物量的影响尚无研究报道.于2013 年8 月2 日至20 日,以海拔3 600 m 的川西岷江冷杉原始林林下植被为研究对象,根据区域内的坡向和林分组成等因素设置3 个100 m×100 m 的典型样地,调查其生物量及其随林窗的变化特征.在每个样地内选择3 个大林窗,在林窗、林缘和林下分别设置3 个20 m×20 m 的样方,调查粗木质残体长度或高度、大小头直径、枯立木记录胸径、腐烂等级等;在林窗、林缘和林下分别设置3 个5 m×5 m 的样方,采用“收获法”收集样方内直径在2.5-10 cm之间的细木质残体和灌木生物量;在林窗、林缘和林下分别设置3 个1 m×1 m 的样方来调查凋落物储量和草本生物量;在1m×1 m 的样方内随机选择1 个20 cm×20 cm 的小样方来调查地被植物生物量.结果表明,（1）川西高山森林生态系统总生物量为72.75 t·hm^-2,其中林下生物量为67.92 t·hm^-2,占生态系统生物量的95.17%.活体植被以灌木为主,其生物量为9.81t·hm^-2;残体部分以粗木质残体为主,其储量为53.00 t·hm^-2;（2）林窗对灌木、草本、地被植物的影响各不相同,且不同物种的灌木生物量表现出不同的分布

Understory vegetation and its debris, as an important component in the forest ecosystem, can be greatly affected by forest canopy. As yet, little information has been available on the effects of forest gaps on understory plant and its debris biomass. In order to understand the changes of understory plant and its debris biomass as affected by forest gaps, therefore, three 100 m×100 m plots were sampled in a Minjiang fir (Abies faxoniana) primary forest ecosystem around 3 600 m altitude in western Sichuan in August, 2013. Coarse woody debris with length/height, basic diameter, diameter at breast height and decay class were investigated in each of three 20 m×20 m sampling quadrats in forest gap center, gap edge and closed canopy, respectively. Fine woody debris and shrub biomass were investigated in each of three 5 m×5 m sampling quadrats in forest gap, gap edge and closed canopy, respectively. Moreover, non-woody litter and herb biomass were harvested in each of three 1 m×1

为开展新奥尔松地区苔原植物生长和植被演替对冰川退缩响应的研究,在Austre Lovénbreen冰川(简称A冰川)前沿不同年代冰缘线附近布设了植被样方,调查了样方内植物组成与群落结构。结果表明:(1)A冰川1990年冰缘线代表植被演替的初始阶段,样方内仅出现先锋植物挪威虎耳草(Saxifraga oppositifolia);(2)1936年冰缘线代表冰川退缩长达75年后植被发育的情况,样方内植物种类和个体数明显增多,植被群落以木本植物极柳(Salix polaris)和草本植物黄葶苈(Draba bellii)为主,地衣以寒生肉疣衣(Ochrolechia frigida)和鸡皮衣(Pertusaria sp.)等壳状地衣为主;(3)随着冰川迹地形成时间更长,植被趋向成熟阶段发展,样方内极柳占绝对优势,地衣的物种多样性和盖度显著增加,出现雪黄岛衣(Flavocetraria nivalis)和刺岛衣(Cetraria aculeata)等叶状地衣。初步结果表明冰川退缩迹地上的物种更替明显,群落结构发生着显著变化。

To enable ongoing research on the growth of tundra plants , vegetation succession , and response to glacier re-treat, vegetation quadrats were established on the Austre Lov énbreen glacier foreland , in Ny-?lesund, Svalbard. Species composition and community structure were investigated during the scientific expedition to the Chinese Arctic Yellow River Station in 2012.Only the pioneer plant , Saxifraga oppositifolia, was found in quadrat No .6 at the lo-cation of the A glacier terminus in 1990, representing the early stage of vegetation succession .Overall, the vegeta-tion was dominated by Salix polaris, Draba bellii, and crustose lichens such as Ochrolechia frigida and Pertusaria sp., and there were increasing numbers of individual plants in quadrat No .7, reflecting the vegetation composition after 75 years of glacier retreat .Over time following glacier retreat , the composition of the vegetation changes and develops to a mature type .Salix polaris predominated in the mat

目的研究广州市不同城市森林类型的林下植物丰富度和多样性，为广州市的城市森林人工林近自然经营以及生物多样性保护提供科学依据。方法2012年9—10月对广州市不同森林类型的城市森林林分结构进行样地调查，运用丰富度、多样性、均匀度等指标分析不同森林类型林下植物多样性。结果和结论天然次生林林下植物丰富度较高，样方内共有林下植物71种，隶属于46科60属；人工林林下植物相对较少，样方内共有林下植物31种，隶属于25科31属；正在逐步改造的人工林林下植物也相对较少，样方内共有林下植物31种，隶属于17科30属。由此可见，天然林较人工林而言，植物物种丰富度高，群落结构相对复杂，森林景观层次丰富，因此，广州市的城市森林人工林近自然化经营意义重大。

Objective]Species richness and diversity of understory plants of different types in urban fo-rests of Guangzhou were studied , with an aim to provide the scientific basis for close-to-nature manage-ment of plantation and biodiversity conservation .[Method]Plots were set up to survey the stand structure in different types of urban forests of Guangzhou from September to October in 2012.Understory species richness, diversity and evenness index were used to study the species diversity of different types of urban forests.[Result and conclusion]The results showed that the understory species were the richest in natural forests(71 species), which belonged to 46 families and 60 genera, followed by those of plantation (31 species), which belonged to 25 families and 31 genera.The understory species of plantation in rehabili-tation were relatively few (31 species), which belonged to 17 families and 30 genera.Diversity compari-sons among different types of urban forests showed that the sp

目的：作为新疆特有的濒危药用植物，新疆阿魏的资源分布区域和数量对其保护和资源的可持续利用具有重要意义。方法：本文采用低空遥感和地面样方调查，对新疆阿魏地理空间分布和数量进行调查研究。结果：低空遥感调查结果首次清晰确定新疆阿魏的地理分布区域，将已知的“阿魏滩”扩大到附近5个山头，覆盖范围约0.88 km2，建议扩大围栏保护面积。同时，低空遥感影像分析出的分布区域内黄叶新疆阿魏（直径在0.3 m以上）数目大约为3191株。而地面样方调查得到直径在0.3 m以上的黄叶阿魏数目为2752株，两者之间误差为14%。并确定了新疆阿魏低空遥感监测的时相和监测范围。结论：低空遥感技术具有快速获取新疆阿魏分布现状的优势，可有效评价新疆阿魏资源动态变化。

As the specific endangered medicinal plant in Xinjiang, resources and distribution of Ferula sinkiangen-sis are important for biodiversity conservation and sustainable development of Chinese medicine resources. The spa-tial distribution and resources of F. sinkiangensis were researched based on low altitude remote sensing and sample investigation. The results showed that the optimum working time for F. sinkiangensis monitoring by low altitude remote sensing was the nearby 5 hills, which covered about 0.88 km2. It was suggested that the fence area should be expanded for protection. According to the results of low altitude remote sensing, the amount of F. sinkiangensis in yellow (diameter exceeding 0.3 m) was about 3 191. However, the sample investigation on amount of F. sinkiangensis in yellow (diameter exceeding 0.3 m) was about 2 752. The error between them was 14%. The monitoring time and range for F. sinkiangensis by low altitude remote sensing were also ensured. It was co