祁连县森林生态系统服务功能效应研究  

Effects of Forest Ecosystem Services in Qilian County

作　　者：陈贵林 CHEN Guilin(Qinghai Provincial Forestry Project Supervision Center, Xining 810007, China)

机构地区：[1]青海省林业工程监理中心,青海西宁810007

出　　处：《林业调查规划》2018年第3期107-110,115,共5页Forest Inventory and Planning

基　　金：青海省林业厅资助项目(青海省2017公益林监测评价QHLY20170518)

摘　　要：以青海省祁连县默勒镇默勒村退耕还林地为研究对象,基于野外采样、定点观测和室内外试验,以撂荒地作为对照,研究青海省祁连县森林生态系统服务功能效应。结果表明:不同退耕还林模式对区域森林生态系统服务功能都有一定程度的积极促进响应,但不同退耕还林模式对区域森林生态系统服务功能效应影响程度不同,区域森林生态系统服务功能效应由高到低顺序为:白桦+青海云杉﹥白桦﹥青海云杉﹥撂荒地。白桦+青海云杉、白桦、青海云杉林负氧离子浓度分别为2766、2593、2381个/cm^3,是撂荒地的1.86倍;负氧离子寿命分别为15.63、14.67、13.46 min,是撂荒地的1.96倍;PM2.5浓度分别为32.28、35.94、40.09μg/m^3,是撂荒地的0.65倍;土壤容重分别为1.15、1.17、1.19 g/cm^3,是撂荒地的0.80倍;土壤总孔隙度分别为49.60%、48.94%、47.57%,是撂荒地的1.24倍;土壤非毛管孔隙度分别为7.16%、6.77%、6.17%,是撂荒地的1.43倍;土壤有机质含量分别为2.93%、2.71%、2.53%,是撂荒地的1.42倍;土壤表层日较差分别为8.70、8.75、8.86℃,是撂荒地的0.97倍。Based on the rehabilitated lands in Mole Village,the effects of forest ecosystem services in Qilian County of Qinghai Province was studied by the field investigation,fixed-point observation and experimental data. The results showed that different models of grain for green had positive but various effects on regional forest ecosystem services. The effects order of regional forest ecosystem services was as follow：Betula platyphylla ＋ Picea crassifoliaBetula platyphylla Picea crassifoliaabandoned land. The negative oxygen ions concentrations of the first three ecosystems were 2766、2593、2381 Num/cm^3 respectively,which were 1. 86 times than that of the abandoned land; the longevities of negative oxygen ions were15. 63,14. 67,13. 46 min respectively,which were 1. 96 times than that of the abandoned land;the concentration of PM2. 5 were 32. 28,35. 94,40. 09 μg/m^3 respectively,which were 0. 65 times than that of the abandoned land; the volume weight of soil were 1. 15,1. 17,1. 19 g/cm^3 respectively,which were 0. 80 times than that of the abandoned land; the soil porosity were49. 60%,48. 94%,47. 57% respectively,which were 1. 24 times than that of the abandoned land; the soil non-capillary porosity were 7. 16%,6. 77%,6. 17% respectively,which were 1. 43 times than that of the abandoned land; the soil organic matter were 2. 93%,2. 71%,2. 53% respectively,which were 1. 42 times than that of the abandoned land,and the daily temperature range of surface soil were 8. 70℃,8. 75℃,8. 86℃ respectively,which were 0. 96 times than that of the abandoned land.

关 键 词：森林生态系统服务功能 净化大气 改良土壤 改善小气候 退耕还林模式 生态环境 祁连县 

分 类 号：S718.557[农业科学—林学]