代写dissertation

美国代写assignment:河流评估

美国代写assignment:河流评估

HQA的基本设计是评估现场的相对质量及其进一步发展和管理活动的潜力。评分是迄今为止评估系统的有效技术,尤其是当系统类似于动态复杂的河流时。栖息地质量评估分数只是研究河流或流域多样化和自然性的一个来源。 HQA评分有助于调查两大领域;

流域或河流潜在变化的影响

HQA分数是专业设计的,考虑专家意见来评估河流,特别是英格兰和威尔士。为了评价一段河流的栖息地质量,一些重要的特征被注意到并单独计分。在这些功能中,流量类型是第一个被记录和评分的类型。据观察,大部分流量是波动的。在一个点处也观察到平滑的流动,在另一个点处观察到了断裂的驻波。在清扫部分观察到的流动显示存在断裂的驻波和平稳的流动,并且广泛存在波纹流。还观察到边缘死水的存在。接下来要观察的是通道底物。在通道基底中观察到砾石和卵石,而大部分部分不可见。根据河流栖息地调查,当观察到河道特征时,只发现了植被中途河道坝,无论是抽查还是清扫。在RHS期间也观察到银行特征,这在抽查中没有观察到结果。但是,在扫掠部分稳定的悬崖,植被侧杆和植物点杆被发现。下一个要注意的问题是银行的植被结构。据观察,在两岸的银行面和银行上下是简单的或复杂的。点酒吧也有助于HQA评分。观察浮叶和自由漂浮的植物类型,这些贡献了HQA评分。生境质量评估评分中也注明了土地利用,树木,相关特征。

美国代写assignment:河流评估

HQA is fundamentally designed to assess the relative quality of site and its potential for further developments and management activities. Scoring is so far an effective technique for assessment of systems, especially when system is like rivers which are dynamic complex in nature. Habitat Quality Assessment score is merely a source of studying diversification and naturalness of the river or catchment. HQA score helps in investigating two major areas;

Effect of potential changes at the catchment or river

HQA score is professionally designed considering expert opinion to evaluate rivers, especially, of England and Wales. To score the habitat quality in a stretch of river some important features are noted and scored separately. Among these features, flow type was the first one to be recorded and score. It was observed that at most of the most flow was rippled. Smooth flow was also observed at one spot and broken standing wave at another. Flow observed in sweep up section shows presence of broken standing waves and smooth flow, and extensive presence of rippled flow. Presence of marginal dead water is also observed. Next thing to be observed was channel substrate. Gravel and pebble are observed in the channel substrate while most of the part was not visible. When channel features were observed, according to River habitat Survey, only Vegetated mid-channel bar was found, both in spot checks and sweep up. Bank features were also observed during RHS, which results no observations in spot-checks. But in sweep up section stable cliffs, vegetated side bars and vegetated point bars are found. Next element to be noted for HQA is bank vegetation structure. It was observed, on both banks that bank faces and bank tops are simple or complex. Point bars also contribute to the HQA score. Floating leaves and free floating vegetation types were observed which contributed to HQA score. Land use within, trees, associated features were also noted for Habitat Quality Assessment score.