The Joints and Plant Growth
Why can lush vegetation grow on bald precipitous granite rocks in Jiuhuashan? That thanks to the granite joint fissures which provide space for seed germination and root growth, and on the other hand, the mud and water within joint fissures provide nutrients for the growth of plants. At the same time, the growth of plants accelerates the development of fissures and weathering of rocks, and increases new space and nutrients, which are biophysical and chemical weathering.
Why do some rocks in Jiuhuashan appear flesh pink? This kind of rock is syenogranite. And its flesh pink color comes from the main mineral potassium feldspar. Other main minerals are white granular transparent quartz and black biotite. The three minerals make up main part of syenogranite of 5～10mm mineral grain sizes.
The main minerals of syenogranite are flesh pink orthoclase, white quartz and black biotite. The name granite stems from Latin granum meaning grain. Granite means that it is comprised of granular minerals. Rock minerals with different grain sizes result in different rock names. The granite of 5～10mm mineral grain sizes is called as coarse-grain granite, 0.3～3mm one called as fine-grain granite. Here, the fine-grain syenogranite in rock vein invaded into early coarse-grain syenogranite
Weathered crust is a discontinuous layer of autochthonous debris from weathered protolith. The its upper layer is earthy debris and the down one contains more and larger granular debris, and further down, debris materials are more rock fragments until to the whole rock, that is weathered crust profile. The weathered crust results from physical and chemical weathering of water, air, creatures and so on. Those
protolith’s minerals and chemical compositions weak against the weathering, like biotite and feldspar in granite, are easily weathered and lost; while those strong against weathering, like quartz, will be residuum to being main composition of debris. The Jiuhuashan weathered crust of granite mainly consists of quartz granules and debris, which are basic substance for plant growth and water conservation.
Natural Blocks Game: Granitic Blocks-piled up landscape
Why are there stacked rocks here as blocks game played by children? Being cross-incised by vertical and horizontal joints, and through differential weathering and stripping off by wind, water, ice and gravity and so on, granitic regular cubic rocks were produced and accumulated to form natural blocks game.
九华山特有的森林景观，由原生的台湾松Pinus taiwanensis Hayata为主要树种的针叶林群落，林下有杜鹃Rhododendron simsii Planch灌丛，分布于九华山海拔900-1000米。台湾松是中国特有松属乔木树种，树形优美，生命力强，枝桠平展、粗韧。林内有野猪、白鹇、松鼠等野生动物出没。
Landscape of Pinus taiwanensis Hayata Community
As a unique forest landscape in Jiuhuashan, it is a coniferous forest community consisting of key species of protogenetic P. taiwanensis Hayata. Under its canopée is bush of Rhododendron simsii Planch. The such coniferous forest community distributes in altitude 900-1000m here. P. taiwanensis Hayata is unique Pinus arbor species in China with graceful tree form, strong vitality, spreading and tenacious branches.Wild animals like wild boars, Lophura nycthemera and squirrels appear here.
The Best Photography Spot for Cloud Sea
Jiuhuashan is the best place to enjoy and take photos of mountainous Cloud Sea landscape, a floating cloud layer forming under certain conditions as a special meteorological landscape below the mountain summit. When people on high spot overlooks, the boundless cloud layer is floating into green peaks and ridges, seeming that a person standing by coast view blue ocean, and it is why it is called Cloud Sea. Jiuhuashan Cloud Sea mainly happens in the sunny day right after sleet. Cloud Sea,bizarre pines and grotesque rocks enhance each other's beauty, rather spectacular and magnificent.
The granitic rock here, 2.2m high, 9m long and 2-5m wide, resembles Jade Ruyi, so it is called Ruyi Rock, which was formed through repeatedly weathering, denudation and peeling off by wind, water and ice along groups of joints in granite body.
台湾松Pinus taiwanensis Hayata，也称黄山松，是松科松属，乔木，中国特有树种。台湾松生长在海拔600米以上，针叶2针一束，稍硬直，长7-10厘米；喜光、深根性树种，喜凉润、耐瘠薄，但生长迟缓。台湾松生命力强，枝桠平展、粗韧，树形优美，具有很高的观赏价值。九华山的凤凰松（树龄1400年）、吉祥松、迎客松等景观树都是台湾松的精品代表。
Pinus taiwanensis Hayata
Pinus taiwanensis Hayata, also called Huangshan Pine, is Pinaceae,Pinus and arbor, unique species in China. P. taiwanensis Hayata grows above the altitude of 600m, and each bunch of leaves has two needles, slightly hard and straight, 7-10cm long. It is photophilous with deep root, and it likes cool and moist environment with poor soil tolerance, but it grows slowly. P. taiwanensis Hayata is species that has strong vitality, spreading tenacious branches, gracious tree form, and great aesthetic value. Phoenix Pine (1400 years old), Auspice Pine and Greeting Pine within Jiuhuashan are boutique representatives of P. taiwanensis Hayata.
Huatai Four Seasons’ Landscapes
Huatai name is because of blooming Rhododendra. In spring, birds here are twittering and flowers’ fragrance is everywhere with an exuberant appearance; in summer, cloud sea is fantastically fluctuating and magnificent; in autumn, the whole mountain is red leaves and trees are dressed in beautiful colors, in winter, comes world of ice and snow, pure and solemn.
Syenogranite makes up of main body of Jiuhuashan Mt.and has main minerals of orthoclase, quartz and biotite. Orthoclase’s colour is light flesh pink. The grain size of the rock minerals here is 0.3-5mm, belonging to medium-fine-grained structure and so, it is called medium-fine-grain syenogranite.