东北农业大学学报
東北農業大學學報
동북농업대학학보
JOURNAL OF NORTHEAST AGRICULTURAL UNIVERSITY
2014年
11期
59-64
,共6页
张兴义%王禹宸%李浩%陈强%陈帅
張興義%王禹宸%李浩%陳彊%陳帥
장흥의%왕우신%리호%진강%진수
黑土%土壤水分%水保措施%空间变异
黑土%土壤水分%水保措施%空間變異
흑토%토양수분%수보조시%공간변이
black soil%soil moisture%soil and water conservation%spatial variation
利用经典统计学和地统计学对黑土坡耕地水保措施下土壤水分含量的时空变异规律进行研究,结果表明,黑土坡耕地土壤水分呈现中等强度的空间异质性,水土流失对土壤含水量的影响可达2 km,采取水保措施可逐渐减弱其空间异质性,对土壤水分的影响可缩短到100 m以内。不同水保措施对减弱土壤水分空间变异程度表现不同,其中梯田和地埂植物带最为显著。合理使用人工水保措施是黑土坡耕地高效管理的重要措施。
利用經典統計學和地統計學對黑土坡耕地水保措施下土壤水分含量的時空變異規律進行研究,結果錶明,黑土坡耕地土壤水分呈現中等彊度的空間異質性,水土流失對土壤含水量的影響可達2 km,採取水保措施可逐漸減弱其空間異質性,對土壤水分的影響可縮短到100 m以內。不同水保措施對減弱土壤水分空間變異程度錶現不同,其中梯田和地埂植物帶最為顯著。閤理使用人工水保措施是黑土坡耕地高效管理的重要措施。
이용경전통계학화지통계학대흑토파경지수보조시하토양수분함량적시공변이규률진행연구,결과표명,흑토파경지토양수분정현중등강도적공간이질성,수토류실대토양함수량적영향가체2 km,채취수보조시가축점감약기공간이질성,대토양수분적영향가축단도100 m이내。불동수보조시대감약토양수분공간변이정도표현불동,기중제전화지경식물대최위현저。합리사용인공수보조시시흑토파경지고효관리적중요조시。
Spatial-temporal variation of soil moisture and its spatial correlations were analyzed with the classical statistics and geostatistics in a black soil sloping farmland under soil conservation measures. Results showed that the soil moisture in the farmland was moderate spatial heterogeneity. The distance of soil moisture influenced by soil erosion was 2 km, and the soil and water conservation measures decreased the spatial heterogeneity gradual y, the distance of soil moisture influenced by soil erosion could be reduced to 100 m.The degree of different measures to decrease soil water spatial variability were different. The soil and water conservation mearsures of the terraces and interval earth bank did the best. Hence, suitable soil and water conservation measures are the important measures for the management in black soil sloping farmland.