人民长江
人民長江
인민장강
YANGTZE RIVER
2015年
16期
80-82,100
,共4页
土地利用类型%降雨径流%面源污染%赣江下游
土地利用類型%降雨徑流%麵源汙染%贛江下遊
토지이용류형%강우경류%면원오염%공강하유
land-use type%rainfall runoff%non-point pollution%estuary area of Ganjiang River
为研究赣江下游不同土地利用类型条件下农业面源污染的特征，分析了自然降雨条件下，不同土地利用类型(林地、蔬菜地、水田)的产流规律和降雨径流中氮、磷分布特点。结果表明，不同土地利用类型间地表径流产生量存在明显的差异，其大小依次为林地、蔬菜地、水田；降雨径流中氮、磷的浓度在降雨初期较高，短暂升高后，开始出现显著下降趋势，具有明显的初期冲刷效应；蔬菜地降雨径流中氮、磷浓度最高，其次为水田，而林地最低。研究结果可为防治赣江下游不同土地利用类型降雨径流中氮、磷流失提供参考依据。
為研究贛江下遊不同土地利用類型條件下農業麵源汙染的特徵，分析瞭自然降雨條件下，不同土地利用類型(林地、蔬菜地、水田)的產流規律和降雨徑流中氮、燐分佈特點。結果錶明，不同土地利用類型間地錶徑流產生量存在明顯的差異，其大小依次為林地、蔬菜地、水田；降雨徑流中氮、燐的濃度在降雨初期較高，短暫升高後，開始齣現顯著下降趨勢，具有明顯的初期遲刷效應；蔬菜地降雨徑流中氮、燐濃度最高，其次為水田，而林地最低。研究結果可為防治贛江下遊不同土地利用類型降雨徑流中氮、燐流失提供參攷依據。
위연구공강하유불동토지이용류형조건하농업면원오염적특정，분석료자연강우조건하，불동토지이용류형(임지、소채지、수전)적산류규률화강우경류중담、린분포특점。결과표명，불동토지이용류형간지표경유산생량존재명현적차이，기대소의차위임지、소채지、수전；강우경류중담、린적농도재강우초기교고，단잠승고후，개시출현현저하강추세，구유명현적초기충쇄효응；소채지강우경류중담、린농도최고，기차위수전，이임지최저。연구결과가위방치공강하유불동토지이용류형강우경류중담、린류실제공삼고의거。
To analyze the agricultural non-point pollution characteristics under different land-use types in estuary area of Ganjiang River, the typical agricultural lands ( forest land, vegetable land, paddy land) are selected and the nitrogen and phos-phorus distribution characteristics of the runoff are analyzed. The analysis results show that the surface runoffs from different land-use type in estuary area of Ganjiang River are different, following a downward order of forest land, vegetable land and paddy land, so the land-use type is the main influential factor on runoff yield;the nitrogen and phosphorus content in runoff is higher in the initial period of precipitation, which rises sharply in a short time and then decrease, and the initial scouring effect is obvi-ous;the nitrogen and phosphorus content in the runoff from vegetable land is the highest, followed by paddy land and forest land. The research result can provide important theoretical basis for preventing the nitrogen and phosphorus loss in rainfall runoff under different land-use types in estuary area of Ganjiang River.
