中国农村水利水电
中國農村水利水電
중국농촌수이수전
CHINA RURAL WATER AND HYDROPOWER
2015年
1期
47-50
,共4页
水文%万泉河流域%径流%植被破坏%热带雨林
水文%萬泉河流域%徑流%植被破壞%熱帶雨林
수문%만천하류역%경류%식피파배%열대우림
hydrology%Wanquan River Basin%runoff%vegetation destruction%rain forest
入海径流量是流域水循环的重要分量，识别入海径流量演变过程及影响因素对流域生态安全及三角洲湿地安全有重要意义。以万泉河流域入海口主要水文站加积站1956－2007年水文和流域气象资料为基础，运用有序聚类等统计方法和G IS技术，研究流域入海径流量演变规律及其影响因素。结果表明，降雨量和径流量均呈下降趋势，径流量下降幅度更明显，径流系数系列2003年前后发生了突变。将1956－1976年作为基准期，利用降雨－径流关系，定量分析了人类活动对径流演变的影响，发现人类活动对下垫面改变是造成2003年后径流显著减小的重要原因。流域山区热带雨林替代为经济林，植被结构改变已导致流域涵养水源功能下降。禁止砍伐热带雨林，阻止种植经济林对维护岛屿生态安全尤为关键。
入海徑流量是流域水循環的重要分量，識彆入海徑流量縯變過程及影響因素對流域生態安全及三角洲濕地安全有重要意義。以萬泉河流域入海口主要水文站加積站1956－2007年水文和流域氣象資料為基礎，運用有序聚類等統計方法和G IS技術，研究流域入海徑流量縯變規律及其影響因素。結果錶明，降雨量和徑流量均呈下降趨勢，徑流量下降幅度更明顯，徑流繫數繫列2003年前後髮生瞭突變。將1956－1976年作為基準期，利用降雨－徑流關繫，定量分析瞭人類活動對徑流縯變的影響，髮現人類活動對下墊麵改變是造成2003年後徑流顯著減小的重要原因。流域山區熱帶雨林替代為經濟林，植被結構改變已導緻流域涵養水源功能下降。禁止砍伐熱帶雨林，阻止種植經濟林對維護島嶼生態安全尤為關鍵。
입해경류량시류역수순배적중요분량，식별입해경류량연변과정급영향인소대류역생태안전급삼각주습지안전유중요의의。이만천하류역입해구주요수문참가적참1956－2007년수문화류역기상자료위기출，운용유서취류등통계방법화G IS기술，연구류역입해경류량연변규률급기영향인소。결과표명，강우량화경류량균정하강추세，경류량하강폭도경명현，경류계수계렬2003년전후발생료돌변。장1956－1976년작위기준기，이용강우－경류관계，정량분석료인류활동대경류연변적영향，발현인류활동대하점면개변시조성2003년후경류현저감소적중요원인。류역산구열대우림체대위경제림，식피결구개변이도치류역함양수원공능하강。금지감벌열대우림，조지충식경제림대유호도서생태안전우위관건。
The discharge into the sea is an important component of river basin water cycle ,identifying the change process and influen‐cing factors of discharge into the sea is of great significance for the basin and delta wetland ecological security safety .Based on the measured data of precipitation and hydrological data at Jiaji Station which is the main controlling station on the river .The character‐istics of discharge into the sea and its influencing factors of Wanquan River Basin in the past 52 years (1956-2007) have been ana‐lyzed by using cluster technique method ,GIS technology and other statistical methods .The research shows that the precipitation and runoff series exhibited a declining tendency and the runoff decreases obviously .Runoff coefficient series show s a drop change point a‐round 2003 .A regression equation based on the data of precipitation and runoff in 1956-1976 is obtained .By using this equation the impact of human activities on runoff can be quantified .The calculated results show that the land cover change is the important cause of runoff decrease after 2003 .Changes in vegetation structure resulting in water conservation ecological function decline because of the destruction of mountain rainforest and illegal-planted economic forests in the basin .Prohibit felling rainforests and preventing planting commercial forests are critical to the maintenance of the island's ecological security .
