過去10年，海平面升高和森林看法的速度都是前所未有的;生態(tài)惡化、物種滅絕、臭氧層被破壞、溫室效應(yīng)、酸雨等一系列環(huán)境問題已經(jīng)嚴(yán)重影響到人類的生存環(huán)境。// 環(huán)境惡化造成的問題之一就是缺水。目前全世界 40%以上的人口，即 20 多億人，面臨缺水問題。據(jù)預(yù)測，未來 25 年全球人口將有 60 億增長到 80 億，環(huán)境保護面臨更大的壓力。// 中國作為一個發(fā)展中國家，面臨著發(fā)展經(jīng)濟和保護環(huán)境的雙重任務(wù)。從國情出發(fā)，中國在全面推進現(xiàn)代化的過程中，將環(huán)境保護視為一項基本國策。// 眾所周知，對生態(tài)環(huán)境和生物多樣性的保護是環(huán)保工作的重點。我國野生動植物物種豐富，僅脊椎動物就有 6000 多種左右，高等植物 3 萬多種。//

　　Sea level rose and forest were destroyed atan unprecedented rate during the last decade. A series of environmentalproblems such s the deterioration of ecosystem, the extinction of bio-species,damage to the ozone layer, the green-house effect, acid rain, have posed aserious threat to human living conditions.// Environmental crisis leads to oneof the serious problems, namely, water shortage. Presently, more than 40% ofthe world’s population, more than 2 billion people, now face water shortage. Itis predicted hat with the global population expected to increase from sixbillion to eight billion over the next 25 years, more pressure on environmentalprotection stress is expected.// As a developing country, china is confrontedwith the dual task of developing the economy and protecting the environment.Proceeding from its national conditions, china has, in the process of promotingits overall modernization program, made environmental protection one of itsbasic state policies.// It is known to all that protection of the ecologicalenvironment and biodiversity is the focal point of environmental protectionwork. Chinais rich in wildlife species. There are about 6,000 vertebrates alone and 30,000species of higher plants.//