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Study on Sustainable Management of Farmland Shelterbelt System in Wuwei Oasis

Author: YuZhuYing
Tutor: WangHui;LiXianYuan
School: Gansu Agricultural University
Course: Forestry
Keywords: oasis in Wuwei farmland shelterbelt system sustainable management site quality suitable tree species eco-economic type
CLC: S759.2
Type: Master's thesis
Year: 2004
Downloads: 78
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Abstract


Ecological environment is the premise and the basis of mankind existence and development and the basic term of sustainable development of social economy. Environmentprotection is to protect the productivity. Environment improvement is to develop the productivity. Farmland shelterbelt system carry to dual mission of improving the ecological environment and economy development of the districts which are not only the irrigated area farmland stabilities development, but also effective way of village economy development and take off the through amass a fortune with the farmer. Districts the oasis of actuality farmland shelterbelt system in Wuwei stability differs, urgent demand establishes the stability and efficiently and sustainable development protection forest system. Sustainable management of the farmland shelterbelt is to develop and create traditional forestry. It occupies important strategy position in sustainable development of forestry. In this paper, the author aims at realizing sustainable development and management in the oasis protective forest system, with sustainable management technique for important points. Measured from the land capability evaluation analysis, species study the economy types of farmland shelter webs in Wuwei. The research results showed as follows:(1) Based on the land capability evaluation of the oasis protection forest system in Wuwei, the first step made sure that the different and agrarian productivity index number, among which the productivity index number of oasis soil is highest, 85.7(>80), the oasis salt soil (56.4) was the lowest, which was smaller than 60. By measuring the accumulations of growth of different soil farmland shelter forest, which was divided the realistic productivity into high and low with the wood according to the different land productivity index, the difference is obvious, divided the land capability into four types.(2) We found that the 5 triple departments of white populus growed well in salt soil and poor soil by the experiment with anti-through and anti-salt alkaline the sex analyzes, The result of the experiment was that tree height of two white populus was 1.44-3.1 times in salt soil, the chest path growth measures is 4.0-8.2 time, but only B1008 can pull through the cruel winter. So this species was one of the important tree to construct the farmland and shelter forest grow in Wuwei.(3) Analyzing by anti-cold, suggest two white poplars, xinjiangs poplars.salix Pbabylonicapicer erassitolia weeping willow, spruce anti-jellies are stronger, next is Sophora japonica etc anti-cold and proceed to plant trees around the farmland shelter forest in the area in similar region Pinus sylvestris Picer Sabina przewalskii three kinds of conifers as this region plants of life rate all amounts to 90 percent above, and grows well, have no plant disease, beauty, can make the courtyard green. The live rate of Pinus sylvestris is high, speed of growth is quickly and strong, can make the shelter forest tree grow. Plafycladus orienta arborrita dries air in spring, the take out is serious slightly, the growth is bad, planting the live rate is low, also occur rust disease.(4) Through analyzing anti-dry, in this area, conifers out,pinus sylvestris is the strongest, the proof establishes Pinus sylvestris is viable in farmland shelterbelts.(5) Through the investigation and analysis, the result on distribution of root system and growth. of pinus sylvestris var. mongolica in wuwei shows that the root distribution of pinus sylvestris var. mongolica is more concentration. The root range of horizontal distribution is 0-250cm and vertical distribution is 0-20cm and occupying 50%-60% of total amounts. The growth is more quick than other evergreen trees in Wuwei Annual high growth is about 60cm and diameter growth is above 1.0cm of 10-year trees. The comparison with other evergreen trees in Minqin, the adaptability of pinus sylvestris var mongolica is better. After 2-3 years, the growth speed of transplanted seedlings is reached originals’ and it is sensitive to temperature, illumination and moisture. The growth speed is faster under the sufficient illumination and moisture, and slower in dry and low temperature.(6) By studying ecologic, economic and social benefits of the farmland shelter nets, they were found the models for planting eco-economic type of shelter nets in Wuwei for regeneration and transformation of farmland shelter nets and developing ecological agriculture in this area.Base on the analyzed research and closely combination native facts, forestry characteristics and plant practices of protecting forest system, stable space and functions of suitable trees and species were discussed, and the path and technique for sustainable management of farmland shelterbelt were presented.

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CLC: > Agricultural Sciences > Forestry > Forest management,forest measurement science, forest management > Forest species and forest products business > Shelterbelts
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