CAJ | 학술논문

针对辽河流域上游水土流失所导致的农业非点源污染,结合当地实际情况,构建植被生态拦截带和前置库组成的非点源污染生态拦截工程.初步试验结果表明:植被生态拦截带能有效地减少农田生态系统中氮、磷等营养元素的流失,能使农田土壤水土流失中的氮素向水体中的流失损失减少50%以上,磷素损失减少70%左右,但存在一吸收固定阈值;前置库能有效汇集上游水体中氮、磷等营养元素.表4,参10.
침대료하류역상유수토류실소도치적농업비점원오염,결합당지실제정황,구건식피생태란절대화전치고조성적비점원오염생태란절공정.초보시험결과표명:식피생태란절대능유효지감소농전생태계통중담、린등영양원소적류실,능사농전토양수토류실중적담소향수체중적류실손실감소50%이상,린소손실감소70%좌우,단존재일흡수고정역치;전치고능유효회집상유수체중담、린등영양원소.표4,삼10.
Considering the local fact, an ecological project which includes vegetative filter strips and pre-dam was built in the upriver area of Haohe River basin to reduce and control the non-point source pollution (NSP) of agriculture which results from the loss of water and soil.Based on the pilot study result, though there was a threshold of absorbing and fixing nitrogen and plmsphorus from the farmland the vegetative filter trip could at least reduce the loss of nittogen by 50 percent and phosphorus by 70 percent. The pre-dam could congregate the nitrogen and phospho-rus of water from upriver area effectivdy.