本文選題：土壤溫度　切入點(diǎn)：界面寬度　出處：《生態(tài)學(xué)報(bào)》2017年11期

【摘要】：景觀界面是生態(tài)交錯(cuò)區(qū)的重要組成部分,在生態(tài)系統(tǒng)的結(jié)構(gòu)、過程和功能中發(fā)揮了重要的作用。以貴州喀斯特山區(qū)人工草地-農(nóng)田景觀界面為研究對象,對界面表層土壤(0—20 cm)溫度進(jìn)行季節(jié)性監(jiān)測;采用移動(dòng)窗口法、野外測定和室內(nèi)統(tǒng)計(jì)相結(jié)合,對以土壤溫度為參數(shù)的界面寬度的大小進(jìn)行了判定;對研究區(qū)3個(gè)功能區(qū)土壤溫度進(jìn)行比較分析。結(jié)果表明:貴州人工草地-農(nóng)田景觀界面四季表層土壤的平均溫度分別為9.8,26.5,15.4℃和4.8℃;人工草地-農(nóng)田景觀春、夏、秋、冬四季土壤溫度界面寬度隨土壤溫度的變化而變化,表現(xiàn)為由寬變窄的變化規(guī)律,分別為37,32,27 m和24 m,土壤溫度界面在人工草地系統(tǒng)的影響域變化與總界面寬度保持一致。研究區(qū)四季農(nóng)田功能區(qū)系統(tǒng)、人工草地-農(nóng)田復(fù)合功能區(qū)系統(tǒng)和人工草地功能區(qū)系統(tǒng)的平均土壤溫度為14.0,14.1℃和13.9℃,春季、夏季和冬季研究區(qū)3個(gè)功能區(qū)的土壤溫度均呈極顯著差異,秋季農(nóng)田功能區(qū)系統(tǒng)與人工草地-農(nóng)田復(fù)合功能區(qū)系統(tǒng)的土壤溫度差異不顯著,二者與草地功能區(qū)系統(tǒng)差異極顯著。建議對研究區(qū)采用12—18 m的寬度進(jìn)行草田間作,為豐富界面理論及"退耕還草"工程提供理論參考和實(shí)踐措施。
[Abstract]:Landscape interface is an important part of ecotone and plays an important role in the structure, process and function of ecosystem. The surface soil temperature of the interface was monitored seasonally by moving window method, field measurement and indoor statistics, and the width of the interface with soil temperature as the parameter was determined. The soil temperature of three functional areas in the study area was compared and analyzed. The results showed that the average temperature of the surface soil at the interface of artificial grassland and farmland landscape in Guizhou in the four seasons was 9. 8% 26. 5% 15.4 鈩，

本文編號：1682610