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Final Report - Asian Development Bank

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TA 4721-PRC: Preparing the Shaanxi-Qinling Mountains Integrated Ecosystem Management Project<br />

<strong>Final</strong> <strong>Report</strong> Appendix 5<br />

3.4.1 Vegetation Type<br />

Based on the color, species composition and structure of plant communities, and environmental<br />

characteristics, the vegetation is categorized into five types basically consistent with the vegetation<br />

type of North Slope in Qinling Mountains, (1) secondary growth shrubland, (2) deciduous broadleaved<br />

forest, (3) coniferous broadleaved mixed forest, (4) coniferous forest and (5) subalpine shrubland.<br />

3.4.1.1 Second Growth Shrubbery<br />

The vegetation type located at the foot of the mountains and on low hills at elevations below 700 m<br />

near the exit of Tianyu River. Because of frequent human activity, natural vegetation has disappeared<br />

and the existing vegetation, which is second growth shrubs and cultivated sundry fruit forests,<br />

developed after the original vegetation was destroyed. Main plants include Ziziphus jujuba var.<br />

spinosa, Deutzia discolor, Lonicera hispida, Jasminum nudiflorum, Periploca sepium, Lespedeza<br />

floribunda, Salix caprea, Ulmus pumila, Broussonetia papyrifera, Neillia sinensis, Pyrus betulaefolia,<br />

Cephalotaxus sinensis. Main herbaceous plants are Phragmites communis, Poa annua, Bromus<br />

japonicus, Melica scabrosa, Alopecurus aequalis, Setatia viridis, Carex leucochlora, Carex giraldiana,<br />

Belamcanda chinensis, Polygonum aviculare, Chenopodum glaucum, Arenaria serpylifolia,<br />

Ranunculus japonicus, Macleaya microcarpa, Corydlis edulis, Descurainia Sophia, Capsella bursapastoris,<br />

Duchesnea indica, Potentilla chinensis, Agrimonia pilosa var. japonica.<br />

3.4.1.2 Deciduous Broadleaved Forest<br />

Quercus aliena var. acuteserrata forest<br />

This forest occurs at elevations from 1400-2000 m, where forest soil is hill brown soil, the soil layer is<br />

deeper and humidity is higher. The forest color is uniform; canopy cover is about 0.8; the basic<br />

species is Quercus aliena var. acuteserrata and the species composition is simpler. Sometimes mixed<br />

growth species are Castanea mollissima, Corylus siediana, Acer grosseri, Pinus armandii and Populus<br />

davidiana. There are Symplocos paniculata, Berberis dolichobotrys, Sorbaria arborea var. glabrata,<br />

Spiraea uratensis, Rosa giraldii and Viburnum betulifolium in the shrub layer. The species of the<br />

herbaceous layer are many and the most common are Aquilegia yabeana, Ranunculus japonicus,<br />

Thalictrum sp., Rheum palmatum, Polygonum multiflorum and other tens of species.<br />

The life-type registers of Quercus aliena var. acuteserrata forest give priority to the phaenerophyte;<br />

the geophyte take second place and the proportion of hemicrytophyte is lower than geophyte which<br />

reflect climate character of warm, wet summers and long winter. The synusia of forest is basic<br />

homology with common deciduous broadleaved forest in temperate zone.<br />

Betula albo-sinensis forest<br />

The forest type occurs mainly on Shouyang Mountain and Guangtou Mountain and at elevations from<br />

2100–2500 m, near the mountain top. The soil is hill dark palm soil in forest communities.<br />

The structure of plant communities is simple; color of the community is uniform and the canopy closure<br />

degree is about 0.6. The basic species are Betula albo-sinensis and Betula utilis, but Betula albosinensis<br />

is dominant and forms single-species stands. Betula utilis only grows in mixed communities<br />

or in pure stands in narrow belts at the upper elevation edge of the forest zone. Betula utilis forest is a<br />

connecting forest zone between the Betula albo-sinensis forest and the Abies fargesii forest.<br />

All composing species are deciduous except Abies fargesii, Tsuga chinensis and Rhododendron<br />

purdomii. There are Lonicera serreana, Viburnum betulifolium, Lonicera webbiana and Rribes<br />

acuminatum in the shrub layer. The species of the herbaceous layer are many and the common are<br />

Carex kwangtoushanica, Arisaema consanfuineum, Smilax menispermoides, Aletris glabra, Clintonia<br />

udensis, Convallaria keiskei, Streptopus obtusatus, Polygonatum verticillatum, Allium prattii, Iris<br />

goniocarpa, Perularia ussuriensis, Herminium monorchis, Liparis japonica, Asarum himalaicum,<br />

Rheum officonale, Cerastium arvense, Paeonia veitchii, Aquilegia ecalcarata, Souliea vaginata,<br />

Delphinium henryi, Cardamine engleriana, Draba layginii, Rhodiola dumulosa and Saxifraga<br />

giraldiana.<br />

The life-type registers of Betula albo-sinensis forest give priority to the phaenerophyte and the<br />

geophytes take second place.<br />

127

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