| The tourist development of natural reserves can rise money for nature reserves in a certain extent,and can provide life safeguard for local residents.And the e protection of wild plant resources of nature reserve at a reasonabl way is the prerequisite of tourism development, and it is the platform of sustainable utilization of nature reserves and plant resources.But at present, natural reserves of our country are generally faced with lack of protection of wild plant resources,the status of the wild plant resources protection and research lags behind.Hainan province is leading to the development of tourism in our country, and tourism boom continues, and tourism management of bawangling nature reserve has become the essential part of take the path of sustainable development of the region, but the ecological and economic benefits of tourism development, the negative effects also coexist at the same time, especially for wild plants- hopea hainanensis is highlighted particularly, therefore, research on tourism development impact on wild plants of bawangling nature reserve have potential value.Hopea hainanensis is a kind of cherish tree species of tropical rain forest in bawangling nature reserve of hainan province,in recent yesrs,with the ongoing of reserve tourism development, the survival of hopea hainanensis is under a lot of threat.Study on the the spatial distribution law of seeding of hopea hainanensis is of great importance to understand the species diversity maintaining mechanism of tropical rainforest in reserve and is of great significance to carry out the species diversity conservation. Paper studied the distribution law of seeding of hopea hainanensis and the relation between seed tree and biotope and seeding of hopea hainanensis.The results were as the follows:1.Hopea species mainly distributed in protected areas, mountainous rain forest in the lowland rainforest, yellow soil and latosol soil types, the main advantage of community there textilis, wild litchi, butterfly tree, Nanshan bamboo ridge. Hopea in natural forest regeneration, through the natural fall for seedling formation update, early seedling number, the latter by various factors that influence the dwindling number, leading to in distribution area showed a scattered distribution. 2.Protected area slope base diameter at breast height under 10 cm of sapling, at least 13% of slope base sample; Diameter at breast height of 11-29 cm of small accounts for 27% of slope base sample; 49 cm diameter at breast height of 30- the most in the age of tree, accounting for 50% of the slope base sample; Diameter at breast height more than 50 cm less old tree, accounting for 10% of the total number of samples. 3.With the increase of the distance from the parent, the seedling number each side of the mean value, average height, eating the mean percentage are falling,At the 0.05 level, the differences of different distance from the seed tree was more significant for the number, height and eating proportion of seedling. With the increase of distance from seed tree, the number,height and eating proportion of seeding showed an obvious trend of reducing. For the number and eating proportion of seeding in each side from the seed tree, 0 to 5 m iwas found the most than the other distance investigations, with the figures of 105.13 plants and 65.41 % respectively.The average height of seedlings was the highest than other side the east and the south was apart the seed tree from 0 to 5 m and the west and the north was apart the seed tree from 5 to 10 m. The total number and average height of the south was the most than other sides,with the figures of 36.53 plants and 60.49 cm respectively, and the same as the eastwith the figure of 24.58 %.4.With the increase of slope base mother tree diameter at breast height, seedling number is on the decline, the proportion of seedling height and eating are in rise before the average downward trend.The average value of the number and the eating proportion of seedling of hopea hainanensis are the lowest when the diameter at breast of seed trees was 63.40±0.02 cm,but te average value of the height of seedling is the lowest when the diameter at breast of seed trees was the minimum. 5.With the increase of slope base mother tree height, seedling quantity and proportion of eating mean a downward trend, the average height of seedling were first after rising downward trend.It show a regular of distribution between the height of seed trees of hopea hainanensis and the number, the height, and the eating proportion of seedling.The height of seed trees was more significant for the number, height of seedling than the eating proportion6.With the increase of altitude, the number, the height, and the eating proportion of seedling showed a decline- rising trend, and all the threereached the minimum at the altitude of 800 m.They show a decline trend below the altitude,on the contrary,they show a rising trend,and the rising amplitude of height of seedling is the larggest.7.With the increase of slope, the number, the height, and the eating proportion of seedling showed a decline-rising trend, and all the three reched the minimum at the slope of 50°. They show a decline trend below the slope,on the contrary,they show a rising trend,and the rising amplitude of height of seedling is the larggest. 8.With the increase of soil moisture content, seedling quantity, height, eating the proportion of distribution density are in decline after rising first, suitable slope base seedling growth of soil moisture content of 3.6-36.7% seedling number, height, and eating the proportion distribution density is larger soil moisture content about 13-22%, other range distribution density are smaller. 9.With the increase of gia proportion, the number, the height, and the eating proportion of seedling distribution density show a trend of first risie after decline, the density distrition is larger as the gia proportion is from 60 to 65 %, the average value is about from 1 to 15 strains respectively, from 10 to 35 cm, from 5 to 12 %. The density distrition is smaller as the gia proportion is from 0 to 50 % and from 80 to 90 %, the average value is about from 5 to 20 strains respectively, from 7.58 to 45 cm, from 1.26 to 23.72 %. 10.Tourism activities of Hopea seedlings renewal process has a certain influence, with the increase of reserve visitors, roads and other tourist facilities, narrow Hopea where the forest patch area, increase trend of fragmentation, visitors and other factors also led directly to the Hopea regeneration seedling survival rate decreased. Paper for the distribution law of seeding of hopea hainanensis and the relation between seed tree and biotope and seeding of hopea hainanensis,on the basis of understanding of the development law and the habitat characteristics of hopea hainanensis, this paper expounds the tourism development activities on the influence of wild plants in the study area,to solve the natural reserve tourism development and the contradiction between the sustainable utilization of hopea hainanensis specific protection measures are put forward. |
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