讨论在佛罗里达州促使灌木蜥蜴丧失适当栖息地的各种因1.doc

针对问题一：我们通过查找相关资料及讨论，总结出了促使佛罗里达州灌木蜥蜴丧失适当栖息地的因素有：食物的减少。天敌的破害。全球气候变暖。人为的破坏。知道了促使蜥蜴丧失栖息地的因素后，我对此提出了相关建议并说明了实施相关建议时会出现的一些障碍。For question one: We find the relevant information and discussion, summed up the loss prompted Florida lizards shrubs suitable habitat factors: the reduction of food. broken harm natural enemies. global warming. man-made destruction. Lizard known to promote the loss of habitat factors, I am made the implementation of relevant recommendations and suggestions that will appear when some of the obstacles.随着人民生活水平的提高，我们的生态环境被破坏了。生物学家预言，气候变化正在促使物种在下个世纪灭绝，尤其是那些不能足够迅速地调整自己的物种。动植物在特定的小生境为生存而进化，有些也许能适应新环境，许多已经适应，而对其它许多物种来说，适应还需要时间。遍布世界的蜥蜴种群似乎正在发生这样的变化。佛罗里达州灌木蜥蜴的栖息地正遭到破坏，有些栖息地已经丧失了，这将严重影响到蜥蜴的生存。那么我们应对促使灌木栖息地丧失的因素进行讨论，从而采取措施进行保护，减少蜥蜴的死亡。经过我们的查找和讨论，我们总结出促使佛罗里达州灌木蜥蜴丧失适当栖息地的因素有：食物的减少，蜥蜴的主要食物是昆虫。天敌的破害，如：鸟类、蛇类等。全球气候变暖导致一些地方气温变化太大，蜥蜴难以适应，从而使得蜥蜴丧失了栖息地。人为的破坏，如：反复砍伐，垦荒、山火和采石对林地的直接破坏，大面积山野菜采集对胎生蜥蜴活动的干扰，使得蜥蜴栖息地的减少。既然我们已经知道促使灌木蜥蜴丧失适当栖息地的各种因素，那么我们为了保留这些栖息地，我们应采取什么样的措施来保护蜥蜴的栖息地呢？我们可以采取的措施有：保护好蜥蜴栖息地的食物链，尽力维护好该区域原有的食物链。呼吁全球的人们要保护好环境，应走“可持续发展”的道路，应使用绿色能源，不使用污染重的能源，防止全球气候的变暖。大力宣传环保意识，让人们知道环保的重要性。宣传蜥蜴对我们人类的重要性，从而号召大家要保护蜥蜴、保护蜥蜴的栖息地。政府应出纳一些条例，对乱砍乱伐、随地开垦、烧山者进行严厉的惩罚。虽然我们有着这么多的措施可以保护栖息地的丧失，但是在实践中我们也会遇到一些障碍。我们遇到的障碍有：要维护好该栖息地原有的食物链会受到很多其它因素的影响，如：天灾人祸，这是我们难以控制的。呼吁全球的人们要保护好环境，这是很广泛的，难于使得各国的人们得到统一的意见，齐心协力做宣传。宣传环保，得经过政府的允许、批准，还需要大量的资金，在一定程度上还有障碍。要搞宣传需要大量的人力、物力等等。虽然我们在实施相应的保护蜥蜴栖息地的措施时，会遇到很多的障碍，但是我们相信只要我们齐心协力去做，一定能够保护好蜥蜴的栖息地，减少蜥蜴的死亡，维持好我们共有的家园地球。With the improvement of living standards, our ecological environment is destroyed. Biologists predicted that climate change is driving species extinction in the next century, especially those who can not adjust quickly enough to their own species. Plants and animals in a particular niche for survival and evolution, some may be able to adapt to the new environment, many have adapted to, while many other species, it will take time to adapt.Lizard species around the world seems such changes are taking place. Florida lizards shrub habitat is destroyed, and some habitat has been lost, and this will seriously affect the survival of lizards.Then we should promote the loss of shrub habitat to discuss the factors to take measures to protect and reduce the lizards death. After our search and discussion, we conclude that the loss prompted Florida lizards shrubs suitable habitat factors: the reduction of food, the main food is insects, lizards. broken harm natural enemies, such as: birds, snakes and so on. global warming, the temperature changed too much in some places, lizards difficult to adapt, so that the lizards lost their habitat. man-made destruction, such as: repeated cutting, reclamation, forest fires and mining Shidui Lin to direct destruction of large areas of wild vegetable collection activities on the interference of viviparous lizard, lizard habitat loss making.Since we already know to promote the loss of suitable habitat for lizards shrubs of various factors, then we are to preserve these habitats, what we should take measures to protect the habitat of lizards do? The measures we can take are: lizard habitat protecting the food chain, try to safeguard the existing food chain in the region. urged people to protect the global environment, should take the sustainable development of the road, you should use green energy, do not use heavy pollution and energy, prevent global climate change. vigorously promote environmental awareness and let people know the importance of environmental protection. promote the importance of our human lizard, which called on everyone to protect the lizard, lizard habitat protection. cashier some of the Government regulations on deforestation, anywhere reclamation, burning vegetation were carried out severe punishment.Although we have so many measures to protect habitat loss, but in practice, we will encounter some obstacles. The obstacles we have encountered are: To safeguard the original habitat of the food chain will be many other factors, such as: natural disasters, it is difficult for us to control. urged people to protect the global environment, this is very broad, difficult to allow countries to unify the views of the people and make concerted efforts to advertise. to promote environmental awareness, have been the Governments permission, approval, also requires a lot of money, to a certain extent, there are obstacles. engage in advocacy need a lot of manpower, material and so on.While we in the implementation of appropriate measures to protect the lizard habitat, will encounter many obstacles, but we do believe that if we work together, we can protect the lizards habitat, reducing the death of lizards to maintain our common good home - the Earth.Matrix model of LeslieThe clutch size of lizards,which is I years old.离合器大小的蜥蜴，这是我多年的历史。The survivorship of lizards, which is I years old.线性回归模型Now we use maximum likelihood estimation to estimate the parameter a.since the expectation of the exponential distribution is a 蜥蜴i岁时的身长their activity is highly depressed.So it is essential for the migrating lizards to reach a new habitat before the winter coming. The probability of a lizard surviving the migration is equal to the chance they cover the distance between the 2 patches in 6 months. 在第j年i岁蜥蜴的数量we think that the exponential distribution can be used to depict this migration process. The density function of exponential distribution isDenote by D the distance a lizard covered after 6 months with probability density function i岁时蜥蜴数量所占比例问题4科学家的研究表明许多因素都可能导致蜥蜴迁移，在一个栖息地带中，食物，空间，掩蔽地，抑或繁殖配偶可能受限制的，这就导致动物个体在各个地带之间迁徙。蜥蜴的迁移将影响该区域蜥蜴的数量 ，在研究中是不容忽视的。佛罗里达灌木蜥蜴的活动很大程度上取决于温度。在冬天，他们的活动是相当必要的。在冬天来临之前，迁移的蜥蜴必须适应新的环境。否则，它们将不能够存活下来，将会冻死。现在我们我们要讨论的是两个地带i和j之间之间经迁徙而