In the term of principles of regional conservational development , to define the area in which we can have estate objection , where concentrate in the area of beikang , nankang , jiuqu and from yuanbaishan to shaoer whose surface area is 5 . 0 km % ( 4 ) in the light of ground water recharge function , the main way to define contents including existing green conservation , water source region conservation is to ecology construct 按照区域保护性开发的原则,界定可适宜进行房地产开发的建设区域,主要集中在北康、南康、九曲及元白山至邵而庄一带,面积约5 . 0km ~ 2 。 ( 4 )根据研究区的主要生态功能:地下水补给功能,研究区内保护重点为现有绿地的保护、水源地的保护。
In view of the present situation and existential issue of ecological economy of natural forest in diverting water from the south to the north source region , necessities requirement of recover and protection of natural forest are expounded , some basal conditions and favorable factors are analyzed , and policy and suggestions to actualize are advanced 摘要针对南水北调中线水源区天然林的现状和存在的生态经济问题,阐述水源区天然林恢复与保护建设的必要性,分析实施天然林恢复和保护的基础条件和有利因素,提出天然林恢复、保护与生态经济建设实施的政策建议。
These phenomena show that the fault has strongly activities at the same time . at that time tan - lu fault zone occurred a large - scale left - lateral displacement . the strike - slip movement on the tan - lu fault zone cau sed the zhangbaling uplifting which became source region and the hefei basin appeared strike - slip flexure at the west side of the fault 说明了控盆断裂?郯庐断裂带在该时期具有强烈活动,且以大规模走滑运动为主,郯庐断裂带的走滑使得东侧张八岭进一步快速隆升,仍构成沉积物源系统;在断裂西侧,合肥盆地因走滑而挠曲,形成沉积可容空间。
Tncyclic diterpanes c20 , c21 and c23 distribution also has relationship with oil gravity , oil and gas production , as well as oil pool formation timing and oil source . rising - patterned oil originates from fengcheng formation , while peak - patterned oil from xiawuerhe formation . four types of migration and accumulation models are put forward : ( l ) fault controlled migration and accumulation along ridge far from source region ; ( 2 ) fault and unconformity controlled migration and accumulation around source region ; ( 3 ) fault controlled migration and accumulation in the slopes within source region ; ( 4 ) biogenetic and low temperature catalyzed gas migration and accumulation in middle and shallow formation 受挤压背景控制,研究区内海西期形成的断裂,全部为逆断裂,活动期长,可以延续到印支期和燕山期,断开层位可以从石炭系上延至诛罗系,它们对区域构造、沉积、油气运聚有显著的控制作用;而燕山期形成的断裂多为小型正断裂,部分为株罗系和白要系内部断裂,部分从徐罗系断至白圣系。
The time of peak value of low frequency u wind is prior to the peak of rainfall in flood years ; ( 3 ) there are low frequency olr moves northward at low - latitude and southward at mid - latitude at the same time in flood years , the join point is between 20 - 30 n . contrarily , there is n ' t clear confluence area in drought years ; ( 4 ) the source region is about mid - latitude pacific ocean and philippines in flood years and drought years ( 2 )涝年纬向风与olr场的对应关系无论在位相还是在振幅的配置上都比较好,在长江中下游地区降水的峰值出现前期, 20 30 n纬带总是会出现西风峰值,这是与东亚夏季风的北进相联系的;而旱年时,纬向风与olr的主振荡周期总是不一致,两者的配合较差。