农业科学与技术（英文版）
農業科學與技術（英文版）
농업과학여기술（영문판）
AGRICULTURAL SCIENCE & TECHNOLOGY
2015年
4期
662-667
,共6页
熊柳梅%黄金生%曾艳%黄雁飞%陈桂芬%刘永贤%周柳强%谭宏伟%黄美福%黄玉溢
熊柳梅%黃金生%曾豔%黃雁飛%陳桂芬%劉永賢%週柳彊%譚宏偉%黃美福%黃玉溢
웅류매%황금생%증염%황안비%진계분%류영현%주류강%담굉위%황미복%황옥일
人工桉林%土壤孔隙度%土壤水分变化%红壤%丘陵区%华南
人工桉林%土壤孔隙度%土壤水分變化%紅壤%丘陵區%華南
인공안림%토양공극도%토양수분변화%홍양%구릉구%화남
Eucalyptus plantatlon%Soil porosity%Changes of soil water content%Red soli%Hilly reglon%South China
[目的]探明人工桉林的土壤孔隙状况及水分含量变化影响因子，为华南红壤丘陵区桉树种植生产中土壤水分利用提供参考依据。[方法]在相同气候区内，按上中下不同坡位，采集表土层（ A）、淀积层（ B）和母质层（ C）3个不同剖面发生层的土壤，测定人工桉林、天然林、松林的土壤孔隙度和水分，并在垂直和水平方向分析土壤水分含量的差异状况及影响因子。[结果]A、B、C 3层的人工桉林、天然林与松林的土壤孔隙度平均值分别为45.9%和41.4%、55.3%，水分平均值分别为13.3%、13.4%和15.5%，这3种林分的土壤水分在剖面上和坡位上不存在显著差异（P＞0.05），但不同林分间的表层土壤水分存在显著差异（P＜0.05）；在水平方向上，总盖度与土壤水分存在极显著正相关。[结论]冠层及草本、落叶层的总盖度是林分表层土壤水分变化的主控因素之一。
[目的]探明人工桉林的土壤孔隙狀況及水分含量變化影響因子，為華南紅壤丘陵區桉樹種植生產中土壤水分利用提供參攷依據。[方法]在相同氣候區內，按上中下不同坡位，採集錶土層（ A）、澱積層（ B）和母質層（ C）3箇不同剖麵髮生層的土壤，測定人工桉林、天然林、鬆林的土壤孔隙度和水分，併在垂直和水平方嚮分析土壤水分含量的差異狀況及影響因子。[結果]A、B、C 3層的人工桉林、天然林與鬆林的土壤孔隙度平均值分彆為45.9%和41.4%、55.3%，水分平均值分彆為13.3%、13.4%和15.5%，這3種林分的土壤水分在剖麵上和坡位上不存在顯著差異（P＞0.05），但不同林分間的錶層土壤水分存在顯著差異（P＜0.05）；在水平方嚮上，總蓋度與土壤水分存在極顯著正相關。[結論]冠層及草本、落葉層的總蓋度是林分錶層土壤水分變化的主控因素之一。
[목적]탐명인공안림적토양공극상황급수분함량변화영향인자，위화남홍양구릉구안수충식생산중토양수분이용제공삼고의거。[방법]재상동기후구내，안상중하불동파위，채집표토층（ A）、정적층（ B）화모질층（ C）3개불동부면발생층적토양，측정인공안림、천연림、송림적토양공극도화수분，병재수직화수평방향분석토양수분함량적차이상황급영향인자。[결과]A、B、C 3층적인공안림、천연림여송림적토양공극도평균치분별위45.9%화41.4%、55.3%，수분평균치분별위13.3%、13.4%화15.5%，저3충림분적토양수분재부면상화파위상불존재현저차이（P＞0.05），단불동림분간적표층토양수분존재현저차이（P＜0.05）；재수평방향상，총개도여토양수분존재겁현저정상관。[결론]관층급초본、락협층적총개도시림분표층토양수분변화적주공인소지일。
Objective] This study almed to investigate the characteristics of soiI total porosity (STP) and various factors affecting soiI water content (SWC) in eucalyptus pIantation (EP), thereby providing references for soiI water utiIization in eucalyptus pIanting in the red soiI hiI y region of South China. [Method] In the same cIimatic region, soiI sampIes were coI ected from surface soiI Iayer (A), iI uvial horizon (B) and parent material horizon (C) in the upper sIope, middIe sIope and Iower sIope of eucalyptus pIantation, native forest and pine forest, respectiveIy, to determine the soiI porosity and soiI water content and analyze changes and various infIuencing factors of soiI water content in horizontal and vertical direction. [Result] Average soiI porosity in eucalyptus pIantation, native forest and pine forest was 45.9%, 41.4%and 55.3%, respectiveIy; soiI water content in these three forest stands was 13.3%, 13.4% and 15.5%, respectiveIy. In addition, soiI water content in these three forest stands exhibited no significant differences (P>0.05) among different soiI profiIes and sIope positions, but soiI water content in surface soiI Iayer varied significantIy (P<0.05) among different forest stands; in the horizontal direction, soiI water content exerted an extremeIy significant positive correIation with total coverage. [Conclusion] Total coverage of canopy Iayer, herb and Iitter Iayer is one of the most critical fac-tors affecting the changes of soiI water content in surface soiI Iayer of forest stands.
