| AnstraOtBecause environmenta1 sma11 c1 imate of hi 11 side product ion road of 1oessgu11y district is bad and its soi1 is hard because of inf1uenced by peop1e,vegetab1e on it grow bad and its soi1 is bare. Its erosion is serious verymuch, even interrupting transportation under f1owed by windy and washed byrainfa11, which is harm to production and economica1 activities. In order tobetter the eco1ogy sma11 environment and re1 ieve soi 1 erosion, this paperdraws some conc1usions on the investigation of the soi 1 erosion of hi11sideroad and making a test of anti--erosion vegetab1e p1anting'l) Through researching the erosion of hi l Iside production road in Yanergouva11ey of Loess gu11y district, we sununarize the erosion characteristic ofhi 11 s ide product ion road, which are inf1uenced by peop1e. Road surface erosionis stiff ground erosion, and road sides1ope erosion is soft ground erosion.The run off of road erosion is big very much, and destroying function is big,even 1eading to break off traffic, make against the production, economica1intercommunion. Road erosion is developed to "road changing into gu11y". Thetypes of road erosion are the same as other p1ace, but have its owncharacteri st ic. This paper states the p1ace of erosion tYDe happening and getsthe Quafltity of al1 kinds of erosion types. The factors of inf1uencing roaderosion are 1ot, such as rainfa11 run off, road length, soi 1 road gradientand rainfa11 intensi ty, etc. By researching and surnariz ing the important typeof road erosion --gu11y, this paper states the re1ation between the threecons t itut ion factors (gradi ent, roadcrank1e curvature semidiameter and roadplace) and gu11y format ion degree, what's more, and introduce a est imat ionformu1a on thi s researching and ana1 yz ing conc 1us ion. So, by researching roadthree factors afld ca1cu1at ing the va1ue of estimat ion formu1a, we may forecastthe ratio of gu1ly happening of road. This paper sti11 states this re1ationof road erosion characteristic and road transect type.2) By making a test on the spot and considering thi s demand of road erosion,this paper put forward the princip1e of road bio1ogica1 anti--erosion systemconstruction and road anti--erosion vegetab1e choice. The paper sti 1 l statesthe growth course of ten herbage vegetab1es, through ana1yzing the herbagevegetab1e p1ant ing and group p1ant ing. We measure severa1 the up--ground part,root bio1ogical items, and emphasize on measuring the strengthen of soi1ant i--cutt ing intensity of root and the mechanics characteri st ics, whi ch areshowed in the course of root pu11ed, and draw some conc1usions. In this paper,we st i 11 observe and compare ten herbage eco1ogica1 characteri stics, such asover--suuner rat i o, over--wi nter rat io and the abi 1 ity of enduri ng tramp1 e, etc.Then, according to these items measured, we select eight items which aresati sfied to the demand of road anti--erosion, with fuzzy method, and apprai seand se1ect ten herbage vegetab1es. In this paper the order of the abi1ity often herbage vegetab1es whi ch are sati sfi ed to the demand of road ant i--eros ion,is Afmpus dahurfcus Turcz, he1i1otus a1bus Desrtws inerm1s LeNS, AgfOPmp cr1st8tum fL. j Gaertn POa cmpessa L.,hestuca rubra L., Lo1jum perenne L., Lotus com icu1atus L., CynodOndact-vIonT1f1arm., 7r1fO1ium ropens L.. In thi s order, those herbage vegetab1es beforePOa cmpessa L. is adapted to p1ant and those after it can't sing1e p1ant, as1eading seed, on road surface and roadslope. We sti 11 put forward severa1groups which are feasib1e: nms driUrjcus TUrcz + he1ijotus aibus DeSLBromus inernds LeVss + LoI1um perenne L., E1.rmus dahurjcus TUrcz + POacHessa L., he1j1otus a1bus Desr + AgFOPryon crjstatum CL. ) Gaert4 Lo1iumperenne L. + Af-Vmus dahurfcus Turcz. What's more, as anti--erosion vegetab1e,native vegetab1e shou1d be very important, especia11y two vegetab1es: Stlbabungeana and naI7gfzi (tr... |
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