衰退林 的英文怎麼說
中文拼音 [shuāituìlīn]
衰退林
英文
degraded forest-
In summary, it is the objective basis that mitigating the ecological functions declining of forest and solving the embarrassing situation of our ecological forests of the cultivation, protecting property rights and " all citizens are equal before the law ", thus gives rise to the " principle of equitable burden " is the theoretical origin of its existence
緩解森林生態功能衰退和解決我國生態公益林經營管理的尷尬狀況是該制度提出的現實基礎，而對財產權的保護和「會平負擔原則」則是該制度存在的理論依據。It points out that the rational and stable inner structure cannot lead to serious soil moisture shortage ; its natural climate condition can meet the needs of forest community. it is the irrational management that causes the serious soil moisture shortage in artificial forestry land. if we intervene properly and create some growth condition similar to natural vegetation, the recessed artificial robinniapseudoscacia can restore benignly
當前人工林地的土壤水分出現嚴重虧缺而形成土壤干化層並導致人工林衰退是人為不合理經營造成人工林群落林分結構不完善的結果，如果人為干預適當，能創造出類似於天然植被的生存條件，人工植被完全有可能得到正常的生存和發展，出現衰退的人工刺槐林完全有可能得良好的恢復。Abstract : soil fertility of the plantations of paramichelia baillonii, betula alnoides, acacia mangium and altingia excelsa in tropical area of yunnan does not decline rapidly, and the physical and chemical properties of forestland are not affected greatly if the plantations can be managed properly
文摘:在雲南熱區營造山桂花、西南樺、馬尖相思、高阿丁楓等4種人工林，只要經營得當，對林地土壤理化性質並不造成重大影響，不會引起地力迅速衰退。In 0 - 200cm light dried layer was formed and can be recovered partly after rainfall, but beneath 200cm the serious perpetual dried layer has lower water content and larger thickness and is very difficult to be recovered in short period because of the special hydrological characteristics in the loess plateau where infiltration depth is about 200cm and could not percolate into deeper layer. ( 4 ) the landscape ecology in fuxian county shows that the two kinds of forest community have not declined
（ 4 ）富縣天然山楊林和天然遼東櫟林的景觀生態特徵表明，兩類森林群落沒有出現衰退的跡象，這說明森林群落合理的內部結構不會造成林地土壤水分的嚴重虧缺，其自然氣候條件可以滿足森林群落生存、發展的需要。Based on the serious shortage of soil moisture, soil aridity and vegetation recession in this region, the following issues are studied in this dissertation : ( 1 ) the meaning of soil water and its role in the water circulation ; ( 2 ) soil water deficit and its influence to vegetation growth ; ( 3 ) the definition of soil dried layer and the causes of its formation ; ( 4 ) soil dried layer distribution and characteristics in north of shaanxi loess plateau ; ( 5 ) the primary study of measurable index of soil dried layer
本論文主要針對黃土高原土壤水分嚴重虧缺現狀以及因之而形成的土壤干化和林草植被衰退現象，主要對以下幾方面的問題進行了研究： （ 1 ）土壤水分的意義及其在生態系統水分循環過程中的作用； （ 2 ）林草植被土壤水分虧缺狀況及其對植被生長的影響； （ 3 ）土壤干層的涵義及成因分析； （ 4 ）陜北黃土高原土壤干層的分佈及特徵； （ 5 ）土壤干層的量化指標初步研究。In modern times, man - made destruction and irrational use make the shrubbery area reduced sharply and lead to insect and rats disaster and fire and aggravate the decline of shrubbery
近、現代以來，人為的破壞和不合理利用使灌木林面積在其自然分佈區域內迅速減少，並導致病蟲鼠害和火災的嚴重發生危害，加劇了灌木林的衰退。The tong - term tune bests of pinus yunnanensis management lead to bio - diversity decrease, diseases and insect pests damage, genetic degradation, and productivity decline
摘要長期以來，雲南松的純林經營使得生物多樣性降低、林分穩定性變差、遺傳品質退化、林分生產力下降，從而導致生態系統功能衰退。Market volatility towards the end of the month was triggered by a combination of profit taking on the shanghai exchange, weak durable goods figures in the united states, and comments from ex us federal reserve chairman alan greenspan on the possibility of a us recession later in the year albeit against a background where continued growth remained the more probable outcome
大市臨近月底時轉趨波動，主要是由於上海股市出現獲利回吐及美國耐用品數字疲弱，加上前美國聯儲局主席格林斯潘稱美國經濟或會于年底陷入衰退所致。雖然格林斯潘有此言論，但就美國的基本因素所見，經濟大有機會持續增長。Last week alan greenspan caused a scare by merely mentioning the possibility of a recession ; this week the former fed chairman put more precise ( and worrying ) odds on this happening ? one in three
上周僅僅因為艾倫.格林斯潘提及衰退的可能性就引發了一次恐慌；本周這位前美聯儲主席提出了這一衰退發生更精確（也更令人擔心）的幾率1 / 3 。" we are in the midst of an obesity epidemic in the united states " says barry levin of the veterans administration medical center in east orange n. j. " these new studies show that diets high in fat are a risk factor for not only heart disease hypertension and diabetes but for cognitive decline as well.
美國新澤西州東奧林奇中老年人醫療管理中心巴里列文說： 「美國肥胖病人日益增多，這些研究成果提醒人們注意，食物中的高脂肪不僅僅是心臟病高血壓和糖尿病的元凶，而且是造成認知能力衰退的禍根。 」The results are as follows : the differences of microorganism quantity among different type of soil is the significant, so are the enzyme activity and soil nutrient
與健康林相比，出現生長衰退林地土壤樣品的養分指標、微生物和酶活性均有顯著程度的降低，表明土壤地力已出現嚴重衰退。分享友人