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近几年来,我区平原地区以杨树为主的防护林、四旁林、速生用材林等发展很快。今后随着经营水平与措施的不断提高和完善,如何及时的掌握林木生长量的变化情况日趋重要。为此,我们根据人工林每株树所占的面积是已知的这一特点,进行了标准行调查方法的初步试验。试区设于玛纳斯平原林场的一片面积为7.93公顷的银白杨林内。该林分1966年营造,初植株行距为1.5×2米,并进行过几次轻度间伐,林木生长尚均匀整齐。
In recent years, the poplar-dominated shelterbelts in the plains of our region, the four-way forest and the fast-growing timber forests have developed rapidly. With the continuous improvement and improvement of management level and measures in the future, it is increasingly important to grasp the changes in the growth of forest trees timely. For this reason, based on the fact that the area occupied by each tree in plantations is known, we conducted a preliminary test of the standard survey method. The test area is set in a 7.93-hectare silver poplar plantation in the Manas plain farm. The forest was built in 1966, the initial plant spacing of 1.5 × 2 meters, and carried out a few light thinning, forest growth is still uniform and tidy.