| 内蒙古东部线叶菊草地生物量与净第一性生产力的初步研究 |
| |
| 引用本文： | 邢福,祝廷成. 内蒙古东部线叶菊草地生物量与净第一性生产力的初步研究[J]. 植物生态学报, 1992, 16(2): 149-157 |
| |
| 作者姓名： | 邢福 祝廷成 |
| |
| 作者单位： | 哲里木畜牧学院草原系，东北师范大学草地所 通辽 028042 |
| |
| 摘 要： | 线叶菊草地总地上生物量的增长规律符合Logistic增长，最大值出现在8月中旬，为198.15g／m2。返青后，线叶菊较同群落内的禾草和杂类草提前达到其生物量最大值。线叶菊、禾草和杂类草的地上生物量的增长与降水量和≥5℃积温呈显著或极显著正相关。地下生物量的季节变化曲线大致为“U”字形，最低值出现在8月中旬，而在早春和秋末时期地下生物量基本相等。地下生物量最大值出现在10月中旬，为1608.5g／m2(干物质)。该草地地上部分净第一性生产力为256.74gm2·a，地下部分为599.51g／m2·a(干物重计)。将生长季内以凋落物形式损失的生物量计算在内，得到的地上净第一性生产力比用极大现存量法估测的结果高出29.57%。
|
| 关 键 词： | 线叶菊草地 生物量 净第一性生产力 |
RESEARCH OF BIOMASS AND NET PRIMARY PRODUCTIVITY OF FILIFOLIUM SIBIRICUM GRASSLAND IN EASTERN NEIMENGOU |
| |
| Xing Fu. RESEARCH OF BIOMASS AND NET PRIMARY PRODUCTIVITY OF FILIFOLIUM SIBIRICUM GRASSLAND IN EASTERN NEIMENGOU[J]. Acta Phytoecologica Sinica, 1992, 16(2): 149-157 |
| |
| Authors: | Xing Fu |
| |
| Abstract: | The growth dynamics of grass aboveground biomass(AB) of Filifolium sibiricum grassland was studied experimentally and shown to agree with Logistic growth with maximum value, occuring in the middle of August (198.15 g·m-2 DM). After germinating the herb F. sibiricum grew quickly, the growth time needed to reach the maximum AB were less than other forbs species.There was a significant or extremily significant positive correlation between precipitation, accumulated temperature (≥5℃) and the AB increase of F. sibiricium, grass and forbs. The seasonal variation of underground biomass (UB) generally showed a “U” form, the minimum UB occurred in middle of August, the maximum UB occurred in the middle of October (1608.2g·m-2DM), and it was close to that in early spring. The net primary productivity of the aboveground part was 256.74g·m-2. year, and the underground 599.51g·m-2’. year. If the litter in growing season was included, the net aboveground primary productivity was 29.57% higher than the result estimated with maximum standing crop method. |
| |
| Keywords: | Filifolium sibiricium grassland Biomass Net primary productivity |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《植物生态学报》浏览原始摘要信息 |
|
点击此处可从《植物生态学报》下载免费的PDF全文 |
