1 general situation
Zhejiang faces the sea to belong to upland and a mountainous area, for 7 hill of typical “ ” of 2 minutes of cropland forms one water mode. Park of 3 rivers wet ground is located in two sides of upper reaches of Lin Hailing river, with the two sides of river bank line of 6 kilometers 50 ～ protect a region 100 meters for the center, because key characteristic groove guard is in always Anxi, only then Feng Xi and clever Jiang Sanjiang gather together place, of friend name for 3 rivers. North of park of 3 rivers wet ground to 104 countries, henan road reachs south, factory of stage city caustic soda, vegetable base reachs east one belt, the hill elementary school, Xie Yi that cross a head is installed to take to dragon on the west, included hill of Bai Mashan, phoenix, north and south is about 1300 meters long, the stuff is about 6000 meters long, include 6 kilometers to grow range of 250 meters wide clever river river, gross area is 7.76 square kilometer.
Wet natural landform is low-lying marsh, what form as the natural fluctuate of tidewater is secondary forest wet landscape. Close chiliad will had been developed to use by intensity, had done not have landscape of complete nature wet ground, give priority to body with fir forest however, farm and narrow pond base or the area is a few larger small piece of land surrounded by water the environment of alternate with. Base go up the tree such as fir having a pool, wet pine, camphor tree, chestnut, herbaceous give priority to with cogongrass and field fireweed. Besides afore-mentioned plants, the metasequoia that still has flake, cypress the vegetable that reachs larger area help advance somebody's career crop, the others is deserted farm.
Tide of this area sea area is belonged to blame is normal half days of tide, 5 hours influence flood last a period of time, ebb-tide restricts 7 hours, day of a the moon two tide (24 ～ 25 hours) , periodic renew. The middle of a month has two spring tide flood, neap high water twice. Spring tide flood appears in the traditional Chinese calendar 28 to first 4, 14 arrive 19 days; Neap flood appears in the traditional Chinese calendar first 8 to 11, 23 arrive 26 days. One also have flow twice in the day, two ebb-tide, still have the slack tide time that two hours influence.
Setting of park of 2 wet ground is analysed
The countryside of the gene library of the Eden of peaceful of the cradle that wet ground is life, natural “ kidney ” , waterfowl, species, commissariat and raw material, temporary Chu Shuihe is slow on treasure ground of the flood, earth one kind important, distinctive with muti_function. Accelerate as what the city changes a course, construction of clever river two sides is quickened, become a land to be developed, a lot of brook are filled to bury use, include to have the wet land that protects value more very much among them. In addition, foul water of industrial waste water, town emits into wet ground in great quantities, make water quality of clever river drainage area exasperate, wet zoology environment and its biology diversity are played havoc with. Of water area and wet ground decrease, wait to urban climate, hydrology, biology and urban organisms' habits bring serious negative effect, already browbeat of local economy progress and dweller live environment, accordingly, begin inside the wet limits that already reclaimed retreat cropland to return “ wet ” , build wet ground to resume zoology project, in order to improve its weak zoology environment, protect biology diversity, the “ that realizes natural protection and reasonable development to use double win ” .
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