草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2011年
4期
25-29
,共5页
阚雨晨%王堃%王宇通%黄欣颖%邵新庆
闞雨晨%王堃%王宇通%黃訢穎%邵新慶
감우신%왕곤%왕우통%황흔영%소신경
典型草原%恢复%围封%植物凋落物
典型草原%恢複%圍封%植物凋落物
전형초원%회복%위봉%식물조락물
Steppe%Recovery%Enclosed%Plant litter
以内蒙古巴林右旗退化草原为研究对象,采用直接收集的方法,研究各种围封条件下,退化草原在自然演替过程中土壤凋落物的变化动态。结果表明:典型草原在封育演替过程中,凋落物呈增加的趋势,以封育10年的凋落物量最高;凋落物的养分,不同年限之间均存在显著差异,其中碳素含量以封育1年的最高,封育10年的最低,氮素则是以封育4年的含量最高,封育1年的含量最低;C/N比值随封育年限的增加呈现降低的趋势。
以內矇古巴林右旂退化草原為研究對象,採用直接收集的方法,研究各種圍封條件下,退化草原在自然縯替過程中土壤凋落物的變化動態。結果錶明:典型草原在封育縯替過程中,凋落物呈增加的趨勢,以封育10年的凋落物量最高;凋落物的養分,不同年限之間均存在顯著差異,其中碳素含量以封育1年的最高,封育10年的最低,氮素則是以封育4年的含量最高,封育1年的含量最低;C/N比值隨封育年限的增加呈現降低的趨勢。
이내몽고파림우기퇴화초원위연구대상,채용직접수집적방법,연구각충위봉조건하,퇴화초원재자연연체과정중토양조락물적변화동태。결과표명:전형초원재봉육연체과정중,조락물정증가적추세,이봉육10년적조락물량최고;조락물적양분,불동년한지간균존재현저차이,기중탄소함량이봉육1년적최고,봉육10년적최저,담소칙시이봉육4년적함량최고,봉육1년적함량최저;C/N비치수봉육년한적증가정현강저적추세。
A field experiment was conducted in a degraded area of typical steppe ecotype in Balinyou Banner, Inner Mongolia Autonomous Region,China to reveal the dynamics of plant litter, using direct collection. The result show that the plant litter shows an increasing trend in different enclosed sucession process,the litter in the first 10 year is the highest. Litter nutrients,in different years, there were significant differences. Carbon content of maximum 1 year fencing,fencing a minimum of 10 years, and nitrogen is based on 4 years of enclosure was the highest content of fencing a minimum 1 year, they were significantly different among. Carbon and nitrogen ratio increases with the enclosure years showed decrease.